Business, farm and industrial

For hydroponic growers checking incoming water before adding nutrients, including pH and conductivity.

For businesses discharging process or waste water to the sewer or a watercourse. The determinands a water company's trade effluent consent typically sets limits on: BOD, COD, suspended and settleable solids, dissolved solids, sulphate, conductivity, pH, copper and zinc. Results you can put in front of the water authority.

E. coli, coliforms and total colony counts. Ideal for checking UV sterilisation equipment and food-production settings. Does not test chemical contamination.

Laboratory culture for Legionella bacteria from a hot tub, spa pool, shower, tank or outlet. The quarterly check HSG282 asks of spa-pool operators, and the periodic test landlords and businesses need under their legionella risk assessment.