Industry

Simplify Validation Using a Worst Case Matrix

To simplify validations, it is recommended that a matrix of worst case equipment to clean and worst case residues to remove be created. Start by first assembling an equipment matrix and residue matrix that defines all shared and dedicated equipment with what residues they are exposed to. By conducting testing, it is possible to identify and document a “worst case”, for the most difficult to clean equipment and residues.

We are using a bath of Alconox powder for cleaning several metallic parts.  We have found that both the concentration of Alconox, along with a set duration brings about the correct end result.  As the wash solution is created at the beginning of each working shift, a gradual ‘weakening’ of the process occurs. In some instances, we resort to manually replenishing the tank with a fresh mix mid-shift.  Would you have any general advice?

Q: We have pretty bad rust imbedded in our concrete floor.  Would Citranox be the answer to remove rust from flooring?

A: Once rust is embedded in a semi-porous substrate like concrete, removing the rust from flooring can be tough.  We would suggest repeated soaking with very hot (140F/60C or greater) 4% Citranox® Liquid Acid Cleaner and Detergent followed by….

Residual titanium dioxide (TiO2) can certainly pose issues due to it’s nature in the presence of heat. To remove TiO2 from tanks using CIP sprayballs, it is important to use….

Q:I was wondering if you have a product that I can use in an ultrasonic cleaner to clean tungsten carbide that would not leach out cobalt? That also can be disposed of down a drain?

A: Tungsten carbide (WC) cleaning comes with some inherent issues, and the cleaning cycle that accompanies it will depend entirely on the feed stock (components to be cleaned) that the process comes from. This is where Alconox, Inc., as the critical cleaning experts, excel from our experience and vast pool of applications to draw upon.