Showing 65–80 of 89 results

  • Laboratory instruments Wide-mouth glass container – tubular gas bottle washing – glass bottle washing – Meng’s bottle washing – laboratory gas bottle washing – gas collection bottle 60-1000ml

    Note:
    Sometimes it is necessary to clean laboratory glassware, which can be done using a variety of methods. Glassware can be soaked in a cleaning solution to remove grease and remove most contaminants. These contaminants are then scrubbed with a brush or cleaning cloth to remove particles that cannot be rinsed. As an alternative to scrubbing, sturdy glassware may be able to withstand ultrasonic treatment. For some sensitive experiments, glassware may be soaked in a solvent, such as aqua regia or a weak acid, to dissolve trace amounts of specific contaminants known to interfere with the experiment. After cleaning is complete, it is common practice to rinse the glassware three times and then hang it upside down on a drying rack.

    Read moreDone

  • Laboratory round bottom straight tube gas cleaning bottle, 250-500ML interval gas washing bottle

    Note:
    Sometimes it is necessary to clean laboratory glassware, which can be done using a variety of methods. Glassware can be soaked in a cleaning solution to remove grease and remove most contaminants. These contaminants are then scrubbed with a brush or cleaning cloth to remove particles that cannot be rinsed. As an alternative to scrubbing, sturdy glassware may be able to withstand ultrasonic treatment. For some sensitive experiments, glassware may be soaked in a solvent, such as aqua regia or a weak acid, to dissolve trace amounts of specific contaminants known to interfere with the experiment. After cleaning is complete, it is common practice to rinse the glassware three times and then hang it upside down on a drying rack.

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  • Laboratory scientific research glass instrument – high borosilicate – low borosilicate transparent flat flat glass test tube can be configured with a stopper φ10-40mm, highly customizable

    Basic use
    (1) Take liquid or solid reagents.
    (2) Heat a small amount of solid or liquid.
    (3) Prepare a small amount of gas reactor.
    (4) Collect a small amount of gas.
    (5) Dissolve a small amount of gas, liquid or solid solute.
    (6) centrifugal as a container.
    (7) Used as a reaction container for a small amount of reagents, used at room temperature or heating

    Matters needing attention
    (1) When filling the solution, it does not exceed 1/2 of the tube capacity, and when heating, it does not exceed 1/3 of the tube capacity.
    (2) When adding liquid to the test tube with the dropper, it should be suspended and added, and should not be extended into the tube mouth.
    (3) To take the block solid with tweezers to pick up to the mouth of the test tube, and then slowly erect the test tube to make the solid slide into the bottom of the test tube, can not make the solid fall directly, to prevent the bottom of the test tube from breaking.
    (4) Use tube clips for heating, and the tube mouth should not face people. When heating the test tube containing solids, the mouth of the tube is slightly downward, and the tilt is about 45° when heating the liquid.
    (5) The heat should be uniform, so as not to burst or burst the test tube.
    (6) Can not be cooled after heating to prevent rupture.
    (7) When heating, preheat to prevent the tube from sudden heat and burst.
    (8) When heating, there should be no water on the outer wall of the test tube to prevent the test tube from bursting when suddenly cold.
    (9) After heating, do not wash the test tube before it is cooled to room temperature.
    (10) When using the test tube clamp to take the test tube, the test tube clamp from the bottom of the test tube to the upper part of the test tube, if the length of the test tube is divided into three equal parts, the test tube clamp on the end of the tube mouth within one third of the part is reasonable.
    (11) Heating application of external flame.

    Read moreDone

  • Laboratory slide Double recessed 7104 slide supply frosted edge Laboratory slide Concave slide (box of 50)

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Laboratory white – brown glass wide mouth reagent bottle, 30ML-2L range of different sizes

    Note:
    Sometimes it is necessary to clean laboratory glassware, which can be done using a variety of methods. Glassware can be soaked in a cleaning solution to remove grease and remove most contaminants. These contaminants are then scrubbed with a brush or cleaning cloth to remove particles that cannot be rinsed. As an alternative to scrubbing, sturdy glassware may be able to withstand ultrasonic treatment. For some sensitive experiments, glassware may be soaked in a solvent, such as aqua regia or a weak acid, to dissolve trace amounts of specific contaminants known to interfere with the experiment. After cleaning is complete, it is common practice to rinse the glassware three times and then hang it upside down on a drying rack.

    Read moreDone

  • Microscope accessories Pathological silicified anti-slip adhesion 7105 slides Positive charge treatment immunohistochemical slides

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide 4.8-5mm thick slide multi-concave slide

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide bottom groove Ultra-white high permeability glass slide single concave double concave multi-concave hole square groove groove grid groove customization

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide Colored paint slide 7109 Cover slide slide

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide Cover slide 7101 7105 Bio-slide microscope glass smooth frosted surface slide

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide custom adhesive slide slip resistant slide Positive charge pathological slide single side spray coating process

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slide Pathological slide Standard slide 7101P-G-7102

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Microscope slides 7109 Slides for biological experiments Slides for students

    Detailed description:
    1) Classification by material: float glass and quartz glass
    2) Article number classification:
    7101 frosted edge
    7102 raw edges
    7103 single concave
    7104 double concave
    7105 Single head single side frosted edge
    7105-1 Single head single side frosted raw edge
    7106 Double side single frosted edge
    7107 Single head double face frosted edge
    7107-1 Double side single side frosted raw edge
    7108 Double face scrub
    7109 Color frosting
    7110 single front frosted
    7111 Full face scrub on both sides

    3) According to whether to wash classification: wash glass and wash glass

    4) Classification by sanding Angle :45°C edging slide, 90° right Angle color slide and 8-sided chamfer slide

    5) According to the type of anti-slip classification: polylysine slide, silicon anti-slip slide and positive charge anti-slip slide

    6) Classification according to packaging specifications :50 pieces and 72 pieces

    7) Classification by polishing: polished side slide and unpolished slide

    8) Classification according to whether it can be marked; Mark slide and ordinary slide

    Mark slide: The new type discloses a mark slide, which belongs to the technical field of microscopic detection equipment. One end of the slide is provided with a layer of pressure paper, and the pressure paper is provided with a layer of plastic coating. The utility model has the advantages of simple structure and convenient use, and the specimen number can be directly recorded on the plastic laminating film with a pen, and the color number will be displayed on the pressing paper. Its number will not be unclear due to daubing or soaking during the detection process, and it is not necessary to write the number on the label paper and stick it on the slide, so that the operation is easier.

    9) Classification of the number of combinations of slides: single slide and composite slide

    Composite slide: The invention discloses a composite slide processing technology, which comprises the following steps: (1) a flat slide is taken, one or more hollow holes are processed on it, and the surface is coated; ② Another flat slide is processed into a flat slide with the same thickness; ③ The composite slide is obtained by using hot pressing or optical gluing to compound the two flat slides together. The processing technology of the invention has the advantages of simple processing, accuracy and high yield.

    10) Classification by use: microslides and cell culture slides

    11) Classified by thickness: 1mm,2mm,3mm, etc., the thickest can reach 8㎜

    Read moreDone

  • Overturning glass test tube 37×45-120-150-180 hydroponic test tube round bottom flat flower arrangement tube

    Basic use
    (1) Take liquid or solid reagents.
    (2) Heat a small amount of solid or liquid.
    (3) Prepare a small amount of gas reactor.
    (4) Collect a small amount of gas.
    (5) Dissolve a small amount of gas, liquid or solid solute.
    (6) centrifugal as a container.
    (7) Used as a reaction container for a small amount of reagents, used at room temperature or heating

    Matters needing attention
    (1) When filling the solution, it does not exceed 1/2 of the tube capacity, and when heating, it does not exceed 1/3 of the tube capacity.
    (2) When adding liquid to the test tube with the dropper, it should be suspended and added, and should not be extended into the tube mouth.
    (3) To take the block solid with tweezers to pick up to the mouth of the test tube, and then slowly erect the test tube to make the solid slide into the bottom of the test tube, can not make the solid fall directly, to prevent the bottom of the test tube from breaking.
    (4) Use tube clips for heating, and the tube mouth should not face people. When heating the test tube containing solids, the mouth of the tube is slightly downward, and the tilt is about 45° when heating the liquid.
    (5) The heat should be uniform, so as not to burst or burst the test tube.
    (6) Can not be cooled after heating to prevent rupture.
    (7) When heating, preheat to prevent the tube from sudden heat and burst.
    (8) When heating, there should be no water on the outer wall of the test tube to prevent the test tube from bursting when suddenly cold.
    (9) After heating, do not wash the test tube before it is cooled to room temperature.
    (10) When using the test tube clamp to take the test tube, the test tube clamp from the bottom of the test tube to the upper part of the test tube, if the length of the test tube is divided into three equal parts, the test tube clamp on the end of the tube mouth within one third of the part is reasonable.
    (11) Heating application of external flame.

    Read moreDone

  • Plastic head dropper – Glass straw with plastic cap 9cm12cm20cm30cm pipette plastic head dropper

    Basic use
    (1) Take liquid or solid reagents.
    (2) Heat a small amount of solid or liquid.
    (3) Prepare a small amount of gas reactor.
    (4) Collect a small amount of gas.
    (5) Dissolve a small amount of gas, liquid or solid solute.
    (6) centrifugal as a container.
    (7) Used as a reaction container for a small amount of reagents, used at room temperature or heating

    Matters needing attention
    (1) When filling the solution, it does not exceed 1/2 of the tube capacity, and when heating, it does not exceed 1/3 of the tube capacity.
    (2) When adding liquid to the test tube with the dropper, it should be suspended and added, and should not be extended into the tube mouth.
    (3) To take the block solid with tweezers to pick up to the mouth of the test tube, and then slowly erect the test tube to make the solid slide into the bottom of the test tube, can not make the solid fall directly, to prevent the bottom of the test tube from breaking.
    (4) Use tube clips for heating, and the tube mouth should not face people. When heating the test tube containing solids, the mouth of the tube is slightly downward, and the tilt is about 45° when heating the liquid.
    (5) The heat should be uniform, so as not to burst or burst the test tube.
    (6) Can not be cooled after heating to prevent rupture.
    (7) When heating, preheat to prevent the tube from sudden heat and burst.
    (8) When heating, there should be no water on the outer wall of the test tube to prevent the test tube from bursting when suddenly cold.
    (9) After heating, do not wash the test tube before it is cooled to room temperature.
    (10) When using the test tube clamp to take the test tube, the test tube clamp from the bottom of the test tube to the upper part of the test tube, if the length of the test tube is divided into three equal parts, the test tube clamp on the end of the tube mouth within one third of the part is reasonable.
    (11) Heating application of external flame.

    Read moreDone

  • Single round bottom flask Standard ground short neck round bottom flask 250ml500ml1000ml

    Note:
    Sometimes it is necessary to clean laboratory glassware, which can be done using a variety of methods. Glassware can be soaked in a cleaning solution to remove grease and remove most contaminants. These contaminants are then scrubbed with a brush or cleaning cloth to remove particles that cannot be rinsed. As an alternative to scrubbing, sturdy glassware may be able to withstand ultrasonic treatment. For some sensitive experiments, glassware may be soaked in a solvent, such as aqua regia or a weak acid, to dissolve trace amounts of specific contaminants known to interfere with the experiment. After cleaning is complete, it is common practice to rinse the glassware three times and then hang it upside down on a drying rack.

    Read moreDone