GHS aquatic toxicity calculator
Classify a mixture for the aquatic environment by the GHS Chapter 4.1 summation method — acute and chronic, with M-factors. Enter each component's aquatic category and concentration and see the math.
Deterministic calculation from the data you enter. A draft result for review by a qualified professional — not a compliance determination. Nothing is stored.
Tired of transcribing hazard data off your supplier SDSs? Sign up and extract it automatically from the actual SDS — which also captures supplier-specific impurities a manual entry can't.
Classify the whole mixture, not one endpoint
GHSLogic runs every GHS endpoint from your real supplier SDSs, then drafts a review-ready SDS and labels — with the rule path behind every result.