1
Chemical preparations for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; chemical preparations for the treatment of water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof; chemical preparations for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination in water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof
3
Chemical cleaning preparations; chemical cleaning preparations for water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof
5
Preparations for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; preparations for the treatment of water systems, ventilation systems, air conditioning systems, or parts thereof; preparations for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination in water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof; all of the foregoing containing biostats, biocides, fungicides, bactericides or algicides
37
Cleaning of water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof; cleaning of cool rooms, refrigeration units, cold storage rooms, or parts thereof
40
Treatment of water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof; treatment of metal surfaces for protection against corrosion; treatment of metal surfaces in water systems, water cooling towers, heating systems, ventilation systems and air conditioning systems for protection against corrosion; consultancy relating to the treatment of metal surfaces in water systems, water cooling towers, heating systems, ventilation systems and air conditioning systems for protection against corrosion; treatment of water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; consultancy relating to the treatment of water systems, water cooling towers, air handling rooms, air handling room surfaces, heating systems, ventilation systems, air conditioning systems, or parts thereof for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; treatment of cool rooms, refrigeration units, cold storage rooms, or parts thereof; treatment of metal surfaces in cool rooms, refrigeration units, cold storage rooms, or parts thereof for protection against corrosion; consultancy relating to the treatment of metal surfaces in cool rooms, refrigeration units, cold storage rooms, or parts thereof for protection against corrosion; treatment of cool rooms, refrigeration units, cold storage rooms, or parts thereof for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; consultancy relating to the treatment of cool rooms, refrigeration units, cold storage rooms, or parts thereof for the removal, elimination, prevention or inhibition of biofilm, micro-organisms or microbial contamination; decontamination of cool rooms, refrigeration units, cold storage rooms, or parts thereof; consultancy relating to the decontamination of cool rooms, refrigeration units, cold storage rooms, or parts thereof