1
Chemicals used in industry and science, namely, chemicals for the treatment and prevention of bulking sludge and foam and for the treatment of wastewater; chemical preparations for use in wastewater and water purification; and chemicals used for wastewater treatment and for prevention and reduction of bulking sludge and foam
40
Treatment of materials, namely, wastewater and water purification and treating wastewater with chemicals in order to remove bulking sludge and foam; and advice and consultancy services in the fields of wastewater treatment and treating wastewater in order to prevent and reduce bulking sludge and foam
42
Scientific and technological services and research and design in the field of wastewater and water purification; industrial analysis and research services; design and development of computer hardware and software; chemical and biological analysis of wastewater and water research using genetic technology; testing, analysis and evaluation of water quality; and analysis of water samples
45
Monitoring services for security purposes in the field of wastewater treatment plants
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