Pharmaceutical

Q. Can I use pH paper to confirm cleaning and rinsing of labware to comply with lab accreditation requirements?

A. If you are going to use pH strips to comply with lab accreditation requirements, you need to verify that your detergents are not interfering with the strips and papers. Detergents and surface active agents can interfere with some pH paper by causing a decrease of several pH units in reading. Please test any pH paper you intend to use …

Q. Cleaning is difficult due to geometry of parts with hard to clean areas. Aluminum mandrels are used for dipping neoprene; mandrels are predipped in calcium carbonate/mica/diatomaceous earth and baked at 200F. Acid dissolves carbonate but doesn’t remove all DE/mica.
A. We suggest cleaning in warm 2% Citranox® (circa 120 deg F, 2.5 oz/gal or 20 mL/L) followed by a thorough rinse. Citranox® is a mild …

We have a glass wash machine and use Alcojet for it. We would like to know if you need to include a neutralizing agent like Citrajet as part of the wash cycle (acid rinse)? Alcojet® Low Foaming Powdered Detergent is what we would call free-rinsing, meaning it rinses completely away with water without rinse aids.

Q. We are attempting to validate our glassware washing process and found trace contaminants of phenol remaining after the washing process. Is there another detergent that is able to remove phenol better then Liquinox®?

A. In general, for manual cleaning, Liquinox® should be an excellent choice for removal of phenol residues. For very low level trace analysis, additional rinsing may be required. For routine laboratory cleaning, a triple rinse is typically used. For trace analysis, a 6 time rinse with purified water is typically used. For extreme low level trace analysis . . .

Q: We’re looking for a detergent solution like Liqui-Jet™2 Instrument Detergent by Steris. We need it to clean the drain in our microbiology autoclave, so it should be able to target any media or agar that may be clogging the drain.…