Micro-Chek® 11 DIDP is an EPA registered, low toxicity industrial mildeweide formulated for the protection of PVC, polyurethane and other polymer compositions susceptible to attack by microorganisms. Micro-Chek® 11 DIDP contains 4% of the active ingredient 2-n-octyl-4-isothiazolin-3-one (OIT) in a plasticizer carrier, and is heavymetal-free. Micro-Chek® 11 DIDP is particularly recommended for use in products such as tenting, tarpaulins, coated fabrics, architectural signage, floor tiles and other coverings that may be exposed to stressful environments Micro-Chek® 11 DIDP should be added to the product with the plasticizer used in the formulation to which it is incorporated. Direct addition to stabilizers, fillers and pigments should be avoided. Micro-Chek® 11 DIDP may also be blended with finished plastisol by mixing well. Optimum use levels depend on the product formulation and the intended end-use environment to which it will be exposed. Typical use levels range from 1.0-4.0%.