Replacement for Chromic Sulfuric Acid
Q. We are discontinuing the use of Chromic Sulfuric Acid and need a worthy substitute. What do you recommend? A. Chromic sulfuric acid was historically used to clean laboratory glassware back before the advent of laboratory detergents. It was effective on a very wide range of residues and water solubility gave interfering, residue-free surfaces. Of course, chromic sulfuric acid is also highly hazardous and difficult to dispose.
Cleaning Glassware with Acid Rinse
Q. I use a Miele glass wash machine and currently use Alcojet. I am wondering if I need to use a two step wash with an acid rinse to be sure the glass is residue free. What detergents would you recommend for either a one or two step cleaning process?
A. Alcojet detergent is free-rinsing, meaning it rinses completely away with water and without rinse aids. There are no softeners, brighteners, fragrances or other residues that are not involved with the specific action of aqueous cleaning. Having said that, we know of many applications that do still involve an acid rinse/wash.
See You at Pittcon 2015
Join us in New Orleans, LA on March 8-12, at the Ernest N. Morial Convention Center for Pittcon Conference and Expo 2015. Alconox Inc. is at Booth 4401. Come visit our booth to receive our unique Alconox gifts, expert technical support for critical cleaning applications and detergent samples. Hope to see you there!
Replacing Sodium Hypochlorite Soak
Q. We need to replace sodium hypochlorite soak solution that we use during the inital cleaning of glassware that was used for any biological fluids.
A. Use a freshly made 1% Tergazyme (1.25 oz/gal or 10 mL/L) in warm water (not exceeding 130 deg F) followed by a thorough warm water rinse to remove biological fluids … Read More.
Laboratory Cleaning – Residue on Beakers
Q. We have a yellowish color on some of our beakers (even after washing at 150 deg F). It looks like it is scale build up. Are we using the right detergent, we have tried alconox powder & Liquinox. Do you think we need a detergent that is more acidic? This is our first time using an ultrasonic machine. We are trying to find the best produce for our application. Do we need to wash longer or at a higher concentration.
A. It is possible there is some kind of inorganic yellowish scale that is not being removed by the Alconox or Liquinox detergents. We recommend… Read the Full Story.