Business, farm and industrial

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

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.