chemicals for environmental pollution control; chemicals for controlling environmental pollution; bacterial cultures for industrial purposes; bacterial cultures for wastewater treatment; biological preparations for use in cell cultures, other than for medical purposes; cultures of microorganisms, other than for medical and veterinary use; cultures, other than for medical or veterinary purposes; bacteriological culture mediums, other than for medical or veterinary purposes; bacterial cultures for waste water treatment; bacteriological cultures, other than for medical and veterinary purposes; absorbent powder for diesel oil spills; absorbent powder for gas oil spills; absorbent powder for fuel oil spills; absorbent powder for spills or accidental leakage; absorbent substances for cleaning solvents; absorbents of synthetic materials; chemical absorbants; synthetic materials for absorbing oil; absorption chemical products; chemical products for use as absorbents