Q: We are currently in the process of looking to change our magnesium metal coupon cleaning process. Currently, we use chromic acid but would like to switch over from that and Alnochromix is the best replacement we have found. We boil our current chromic acid solution to clean the coupons but I
Q: Will Alconox remove the polylysine coating from microscope slides?
A: Polylysine is a commonly used preservative composed of the amino acid lysine in a long polymeric chain. It is removed with either basic hydrolysis, enzymatic processes, or a combination of both.
Q: We currently use Alconox to clean glassware at our facility. Do you have any studies showing potential Alconox detergent residue interaction with organic ketones and/or other organic solvents?
The short answer is that Alconox detergent, like all Alconox Inc. detergent products, are designed to be completely free-rinsing. Therefore leaving no residues to speak of. However, incomplete rinsing can of course happen. So this verification is important.
Q. We need to remove perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonate (PFOS) from laboratory glassware and stainless steel. Since they are inorganic residues, we’re using acidic cleaners, but are not finding them as effective as we expected. Any recommendations?
A. PFOS and PFOA are polar, anionic surfactants. They will best be cleaned by a high-emulsifying, anionic-surfactant-containing cleaner that can make mixed micelles to efficiently remove these residues from surfaces….
Q. is there any industry guidance on triple rinsing…any literature that you know of that this is the accepted standard for manual cleaning that you could provide me?
A. To our knowledge, there are no authoritative source documents to define how many times you should rinse glassware. The logic behind a triple rinse is that, in filling and emptying a vessel three times with water, each time you are diluting by 2 orders of magnitude. In theory . . .