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October 5, 2020
Image: SP Bel-Art H-B Durac 50:100 Percent Isopropyl Alchol Hydrometer

Measuring Alcohol Content in Sanitizers

Dear Lab Guy, I would like to purchase your item B61809-4100 to test the content of alcohol in hand sanitizer. I see that it is currently out of stock, can you recommend something to perform a comparative test, having a known specimen?
September 21, 2020
Image: SP Bel-Art Self-Zero Burette

Fixing a Leaking Burette

Dear Lab Guy, We purchased a few of your 10 mL self-zeroing burettes. We are having a problem with leaking out of the bottom of the glass stopcock. The little rubber O-ring seems to not be doing anything or maybe wasn't designed to keep it from leaking. Do you have any recommendations on how to fix it? We run 0.1N sodium hydroxide through it.
February 9, 2020
Image: Roxy M Repeating Pipettor 37310-0000_54

Dispense Liquids Accurately and Consistently

Dear Lab Guy, I am looking for a pipettor that can be adjusted to dispense liquids in .5ml increments. I purchased one of the Roxy M pipettors recently but I am not sure if this is really what I am looking for? - Ben F.