How do I make the sanitising solution for the WASP?
DISINFECTANT (SANITIZER) SOLUTIONS FOR USE WITH WHITLEY AUTOMATIC SPIRAL PLATER (WASP) Don Whitley Scientific Limited has evaluated three categories of disinfectant agent for use with the WASP instrument. It is essential that WASP is used with one of the recommended agents at the correct concentration: this will avoid invalidation of the instrument warranty for WASP and any accompanying vacuum source. 1. Sodium hypochlorite solution (bleach) Commercial sodium hypochlorite solutions used to prepare WASP disinfectant should contain an available chlorine concentration of between 10% and 15% (100,000 ppm to 150,000 ppm) as supplied. For use with WASP, such solutions must first be diluted in water to 5% of the original concentration. This will produce a final available chlorine concentration of 5000 ppm (nominal). If the concentrate is purchased at a different strength then the relative proportions should be adjusted accordingly. 2. Chlorine Release Tablets DWS has evaluated commercially av
