Showing 81–89 of 89 results
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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.
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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.
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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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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.
-
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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Identification method
1: Appreciate the light and shadow effect of colored glaze crafts,
2: Not different Angle thickness and color of light refraction, can present a three-dimensional visual effect.
3: Appreciate the natural flow of color and feel the pure beauty revealed in the “breath” of the glass.
4: The transparency of the glass, should not be too pure too bright, need to have a certain level of difference and finish, otherwise it will lose its dynamic vitality of the beauty.
5: Feel the beauty of artistic conception brought by the perfect combination of overall shape and color, beauty and creative idea.
6: Appreciate the national culture (non-folk customs) and structural characteristics contained in ancient glass from the perspective of craft.
7: The ancient process determines that there are no two exactly the same glass in the world, the so-called “heavenly work” said is the uniqueness of glass products, carefully taste the color flow of different glass, you will find different artistic conception.
-
Identification method
1: Appreciate the light and shadow effect of colored glaze crafts,
2: Not different Angle thickness and color of light refraction, can present a three-dimensional visual effect.
3: Appreciate the natural flow of color and feel the pure beauty revealed in the “breath” of the glass.
4: The transparency of the glass, should not be too pure too bright, need to have a certain level of difference and finish, otherwise it will lose its dynamic vitality of the beauty.
5: Feel the beauty of artistic conception brought by the perfect combination of overall shape and color, beauty and creative idea.
6: Appreciate the national culture (non-folk customs) and structural characteristics contained in ancient glass from the perspective of craft.
7: The ancient process determines that there are no two exactly the same glass in the world, the so-called “heavenly work” said is the uniqueness of glass products, carefully taste the color flow of different glass, you will find different artistic conception.
-
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.
-
Identification method
1: Appreciate the light and shadow effect of colored glaze crafts,
2: Not different Angle thickness and color of light refraction, can present a three-dimensional visual effect.
3: Appreciate the natural flow of color and feel the pure beauty revealed in the “breath” of the glass.
4: The transparency of the glass, should not be too pure too bright, need to have a certain level of difference and finish, otherwise it will lose its dynamic vitality of the beauty.
5: Feel the beauty of artistic conception brought by the perfect combination of overall shape and color, beauty and creative idea.
6: Appreciate the national culture (non-folk customs) and structural characteristics contained in ancient glass from the perspective of craft.
7: The ancient process determines that there are no two exactly the same glass in the world, the so-called “heavenly work” said is the uniqueness of glass products, carefully taste the color flow of different glass, you will find different artistic conception.
