When operating a rotary evaporator, many glassware will be used, including glass rotary flask, glass condenser, glass discharging valve, etc. These rotovap glassware always been attached with residue solvents on inner glass wall. It will not easy to clean the rotovap glassware if not using for a long time or heating it for a long time.
In a chemical laboratory, vacuum pump and chiller matching use with rotovap. dirty rotary evaporator glassware may cause misleading on experiment results. So how and when to clean the rotary evaporator glassware? How to choose the suitable washing detergent?
How and when to to clean rotovap glassware?
For glassware with difficult-to-clean attachments, the best idea is use suitable washing detergent to dissolve attachment before washing. And for complex structure rotovap glassware such as condenser, if a hairbrush doesn’t work, use cleaning solution to immerse wash is a good solution. When you reversal the glassware, it forming an balanced water film and no drip flowing on glass wall, it indicates you have cleaned up the rotovap glassware.
In general, it’s better to clean the rotary evaporator glassware when just finishing testing, but situations are not all the same. For instance, some solvents won’t attach on glass wall immediately, but if place it for a while, residue come into being; even some chemical solvents will have reaction to the glass material itself. So experiments should clean the glassware according to chemical characteristics.
How to choose the suitable washing detergent?
Synthetic detergent is the commonly used one, but it is not suitable to indissolvable material. Attachment property determines what washing agent we should use. Attachment is alkaline matter: use diluted hydrochloric acid or sulfuric acid scrubbing; attachment is acidic material: use sodium hydroxide solution.
Henan Lanphan is willing to offer more and more useful knowledge to solve the practical problems when using our products. If you any unsolved problems, please contact us for technical help. You can send the email to [email protected]
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