BIT 20% for Construction Chemicals, Wood Preservation & Drilling Fluids

Water-based construction chemicals — cementitious and polymer-modified grouts, ready-mixed plasters and putties, and liquid concrete admixtures — often contain organic additives (cellulose ethers, redispersible polymer powders, retarders) that can support microbial growth during storage, particularly for products held in warm or humid conditions for extended periods before use. This is particularly relevant for export-bound construction chemical products, which may spend extended periods in transit and warehousing under variable climate conditions before reaching the end user.

Wood preservative formulation is a specialised and often heavily regulated field. Different jurisdictions have specific approval and registration requirements for biocidal products used in wood preservation, as these are generally considered biocidal products under regimes such as the EU Biocidal Products Regulation, with wood preservatives falling under a specific product-type category distinct from BIT's approved product-types 6 and 13. Confirm current registration and approval status for benzisothiazolinone-based wood preservative formulations in your target market before commercial use.

Water-based drilling muds and packer fluids used in oil and gas well construction and completion operations are susceptible to bacterial contamination that can cause both fluid degradation (viscosity and rheology changes affecting drilling performance) and downstream reservoir souring or corrosion issues if bacterial contamination is carried into the formation or completion equipment. As with other oilfield biocide selection decisions, compatibility with the full drilling or completion fluid additive package — including other biocides, corrosion inhibitors, and rheology modifiers — should be confirmed through fluid system compatibility testing before field use.