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All studies were performed as reliable OECD guideline studies.

Acute toxicity testing of Semi Dry Absorption (SDA) Product in fish, invertebrates and algae were performed as limit tests and indicate a low order of toxicity with effect concentrations > 100 mg.L-1 (nominal concentration).

The following results were obtained in acute tests:

Poecilia reticulata: LC50 (96h) > 100 mg.L-1

Daphnia magna: EC50 (48h) > 100 mg.L-1

Desmodesmus subspicatus: ErC50 (72h) > 100 mg.L-1

Respiration of activated sludge is not inhibited at concentration > 1000 mg.L-1.

Long-term toxicity to aquatic invertebrates test indicate a toxicity with effect concentrations 21 days - EL50 >10 mg.L-1 (loading rate).

When the assumed value of EL50 is higher than 10 mg·L-1, no further testing is needed and the result obtained in preliminary test presents the result of whole study.

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