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Advanced Cleaning Mechanisms: Cold or Warm for Proteins?

Q: Many of your Tergazyme related TechNotes and recommendations include warm temperatures. Warm temperatures can still denature some hormones and proteins thus causing cleaning problems. I would probably start with a cool (room temp or cooler) rinse (water). Then move to the 1-2% cleaning solution in warmer temperatures. Agreed?

Tergazyme Solution Shelf Life

Q. Do you have any suggestions about the shelf life of 1% Tergazyme solution?

A. Tergazyme solutions should be used within 8 hours of dissolving the powdered Tergazyme detergent in water. As dry powder, Tergazyme has excellent stability with a shelf life of 2 years from date of manufacture.

Cleaning Proteins: pH and Temperature

We run our caustic cleaning at pH 10-10.5. However, the specifications say the nominal pH of a 1% Tergazyme solution is 9.5 Are we compromising cleaning proteins / enzyme performance by using the higher pH and running as part of a caustic cycle? Can we run it at 110F or should we be lower?

Lab Glassware

Cleaning liver residue off of glassware wells

Q. How do I clean liver residues on glassware wells?

A. Cleaning glassware wells with liver residues, rich in proteins that can cross-link, can be very difficult. To clean liver residues, we recommend you soak the glassware wells in a warm (110-130 deg F maximum) 1% Tergazyme solution (10 g/L or 1.25 oz/gal). Rinse thoroughly. Try to minimize… Read More.

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