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Cleaning of Common Lab Chemical Stains
- To remove organic residues, rinse glasware briefly with an organic solvent (acetone or ethanol). The used rinse will then be discarded into the organic waste.
- Use warm tap water and a brush with soapy water to scrub the inside of curved glassware. This waste water can go down the sink.
- Remove soapsuds with deionized water to avoid harsh water stains. The DI water rinse should form a smooth sheet when poured through clean glassware. If this sheeting action is not seen, more aggressive cleaning is needed. To expedite the glass-drying process, rinse again with acetone to remove water. The residual acetone will go into the organic waste container.
1.Water Soluble Solutions (e.g., sodium chloride or sucrose solutions)
Rinse 3-4 times with deionizer water then put the glassware away.
- Water Insoluble Solutions (e.g., solutions in hexane or chloroform)
Rinse 2-3 times with ethanol or acetone, rinse 3-4 times with deionizer water, then put the glassware away. In some situations, other solvents need to be used for the initial rinse.
- Strong Acids and bases
Carefully rinse the glassware with copious volumes of tap water. Rinse 3-4 times with deionizer water, then put the glassware away.
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