What Is Better For Washing Glassware

When cleaning glassware, it is generally necessary to pour out the dirt first, then rinse it with tap water, brush it with detergent, then rinse the detergent with tap water, and finally rinse it with pure water (distilled water or deionized water) for three times. The inner wall of the container cleaned in this way shall be evenly wetted with water without water droplets.

The beakers, conical bottles, cuvettes and test tubes commonly used in the laboratory can be washed with detergent and brush according to the above methods.

Burette, pipette, pipette, volumetric flask, measuring cylinder and other glass instruments with precise scale should not be brushed to avoid damaging the scale line. It is best to use the special cleaning and disinfection machine of Y eadar laboratory, and spray, wash and blow dry with special cleaning agent and cleaning procedure. Or use synthetic washing solution or chromic acid washing solution to soak for a period of time, and then rinse it.

Glass instruments such as cuvettes made of optical glass cannot be brushed with a brush. When soaking with lotion, the problem of infiltration caused by long-time soaking and the decline of light transmittance should also be prevented. Because the cuvette is usually a color reaction, it is recommended to soak it in synthetic detergent or hydrochloric acid ethanol solution for several minutes, and then rinse it. Or use the special cleaning and disinfection machine in the laboratory, special cleaning agent and cleaning procedure to spray, wash and dry.

When washing glassware, it should comply with the principle of small amount and many times, that is, saving and improving efficiency. Do not wipe the cleaned container with cloth or filter paper, which will leave fiber or dirt on the container and pollute the container. When drying, either hang it upside down or use the drying oven (if the solvent is used for the final flushing, do not put it in the drying oven to avoid danger).

In the laboratory, we often use some glassware to hold solutions or reagents, such as beakers, volumetric flasks, test tubes, burets, pipettes, etc. if these glassware cannot be cleaned in time after use, it will easily affect the next experiment, cause result errors, and even have an adverse impact on the performance and service life of the container itself. Therefore, the glassware in the laboratory must be cleaned.