Micro-Chek® 11 DOTP is an EPA registered, broad spectrum antimicrobial for the protection of plasticized PVC and similar products from microbial attack. Micro-Chek® 11 DOTP contains 4% of the active ingredient 2-n-octyl-isothiazolin-3-one (OIT) in a non-phthalate, plasticizer carrier and is heavy metal-free. This antimicrobial additive is recommended for use in products such as tenting, tarpaulins, coated fabrics, floor tiles and other coverings that may be exposed to stressful environments. Micro-Chek® 11 DOTP should be added to the product with the plasticizer used in the formulation to which it is applied. Optimum use levels depend on the product formulation and the end use environment of the finished article. Typical use levels range from 1.0 – 4.0%.