Mystery Gray Deposits Left When Cleaning Glass Frits
Q: We’ve switched from base and acid baths to a Citranox solution for cleaning glassware used to distill H2S from marine sediments using Cr2 , concentrated HCl, and AgNO3. It seems to do a good job on most of the apparatus but we still see grayish deposits on the glass frits. Any suggestions?
A: The detail is appreciated. Whenever there is a “mystery” residue, whether it be on glass frits or any hard surface….