Medical Device Cleaning – Silicone & Metal Adhesion
Q. We manufacture metal parts in house and overmold (LIM) with silicone. We often have adhesion problems between the silicone and metal. We believe the problem is with our current cleaning process. I would like you to recommend a new cleaner that we can test.
A. If having silicone and metal adhesion issues in medical device cleaning, use the hottest practical temperature you can to remove silicone residues. I recommend you clean with very hot 2% Alconox (20 g/L of 2.5 oz/gal) detergent.
Active Enzyme in Tergazyme
Q. How long will the enzyme in a 1% solution of Tergazyme remain active?
A. A 1% Tergazyme solution is designed to give good reliable cleaning performance for 8 hours at 120 deg F. This is designed to correspond to an 8 hour work shift.
Cleaning Labware – Narrow Neck Flasks
Q. What is the proper way to clean narrow neck flasks?
A. Narrow neck flasks are best cleaned in labware washers with special attachments that have a spray nozzle that goes up inside the flask. It is very hard to successfully clean narrow neck flasks in a simple home dishwasher or a lab washer that does not have special narrow neck flask racks.
Liquid Soda Ash to Neutralize Citranox
Q. We’re using Citranox in our laser chillers. Looking for liquid soda ash to remove the Citranox?
Effects of Increased Tergazyme Concentration
Q. Currently we allow parts to soak in 1% Tergazyme® enzyme-active powdered detergent overnight. If we were to increase the concentration to 3-4%, do you think it would increase the stability of the solution being active for a longer period of time?
A. You will both increase the rate of auto-digestion due to increased enzyme concentration
