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Analyze the cleaning steps of glass instruments

General glass instrument

For example, bottles, beakers, etc., can be washed with running water first, and then brush with soap, washing powder or detergent, and then clean with running water, and then rinse with purified water for 3 times (should be washed along the wall and full shock, to improve the washing effect).glass beakers wholesale,science beaker,beaker glass,glass beaker 50ml

Measuring glass instrument

Be like, burette, measuring pipette, measuring bottle, measuring cup, also usable soap, washing powder liquid is catharsis, but cannot brush with wool to wash.glass beakers wholesale,science beaker,beaker glass,glass beaker 50ml

General reagent bottles, triangular bottles

First rinse with tap water, and then put into the ultrasonic filled with clean water, add melted washing powder (or laundry detergent, detergent), ultrasonic cleaning for about 5 minutes, the water temperature is kept between 25-45 degrees. Then clean with tap water, and then rinse with purified water 3 times (should be washed along the wall and full shock, in order to improve the washing effect, after cleaning, can be placed on the instrument rack in a dust-free place natural drying.glass beakers wholesale,science beaker,beaker glass,glass beaker 50ml

Precision or difficult-to-wash glass instruments

For example, burette, pipette, measuring bottle, colorimetric tube, glass vertical melting funnel, etc. should be rinsed with tap water first, drained, and then treated with chromic acid cleaning solution for a period of time (generally placed overnight), then cleaned with tap water, and then rinsed with purified water for 3 times.

Bottle washer

In view of the laboratory configuration bottle washing machine, when after the experiment, laboratory glassware used shall be within the residual solution in waste barrels, and water to wash it, and then put water after cleaning glassware in bottle washing machine, adjust the washing and drying time of need, to stay after cleaning out put a cold, dry after put into storage.

1. Note:

1) When washing the instrument, the hands should be cleaned first, so as not to stick to the oil dirt on the instrument wall, increasing the difficulty of washing;

2) For instruments with grinding stopper, such as volumetric bottles and colorimetric tubes, tie the stopper and tube with string before cleaning to avoid breaking the stopper or mixing with each other.

3) whether the glass instrument is clean, when the instrument is upside down, the inner wall is not hung with water droplets.

2, glass instrument drying

Not in a hurry to use the instrument, can be placed on the instrument rack in a dust-free place of natural drying; If urgent use, general glass instruments, such as beakers, flares can be dry at 60 ~ 70℃; Measuring glass instruments should be naturally drained, not baked in the oven, if urgently needed, can be used to analyze pure anhydrous ethanol rinsing after drying.

3. Storage of glass instruments

Clean glass instruments should be classified in the test cabinet, to be placed safely, tall, large instruments in the inside. A piece of paper should be placed between the plugs for grinding instruments that need to be preserved for a long time to avoid sticking.