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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: redneck on May 18, 2015, 06:52:12 PM

Title: Removing DMSO residue from volumetric pipettes
Post by: redneck on May 18, 2015, 06:52:12 PM

Helllo,
Does anyone have a good way of removing DMSO residue from volumetric pipettes? I am currently using one of those automatic pipette washers with the continuous flow of DI water. However, I cannot seem to rid the bulb portion of the pipettes of DMSO. Any suggestions would be greatly appreciated.
Thanks

Title: Re: Removing DMSO residue from volumetric pipettes
Post by: Hunter2 on May 19, 2015, 02:45:31 AM

Immerse it in KOH/isopropanole mixture for some hours.

Title: Re: Removing DMSO residue from volumetric pipettes
Post by: redneck on May 21, 2015, 12:44:18 PM

Thanks.....we have 70% IPA, would this work?

Title: Re: Removing DMSO residue from volumetric pipettes
Post by: Hunter2 on May 21, 2015, 02:33:28 PM

I think so , try it.