Development of Quality Control Ranges for Biocide Susceptibility Testing.

Every laboratory test needs validation by quality controls. For biocide susceptibility testing (BST), neither quality control (QC) strains nor QC ranges applicable to these strains are currently available. As QC strains, four well-defined laboratory reference strains ( ATCC 6538, ATCC 10541, ATCC 10536 and ATCC 15442), which have been used previously for biocide efficacy testing, were selected.