One Chem BAC 50 Benzalkonium Chloride Concentrated 5L One Chem BAC 50 Benzalkonium Chloride Concentrated 5L is a quaternary ammonium-based product. It can be used for the preparation of disinfectants, cleaners and timber preservation formulations and other similar applications. The advised dilution ratio is 1:8 (one-part Bac 50 and eight parts of water). It can be as high as 1:40 application dependant.
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