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Laboratory workers should consult this guide before undertaking drain disposal of any lab chemicals. Only chemical approved for. A practical guide to disposing of lab chemicals safely, from identifying hazardous waste to proper labeling, storage,. Acceptable: If acceptable for drain disposal and after 30 minutes of contact time, disinfected liquid waste is poured down the sink and. Run water in a kitchen sink and slowly pour bleach down the drain. Alternatively, pour small amounts in the toilet and. After a 30 minute dwell time, the bleach waste may be poured down the drain with running water. The chemical disinfectant you use.
All liquid waste must be appropriately treated prior to disposal by either chemical disinfection or thermal sterilization to ensure.
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