What do you need to measure?
Each parameter page explains the laboratory, portable and online options, with relevant limits and the products we recommend.
pH
pH controls coagulation, disinfection efficiency, corrosion and biological treatment.
OptionsConductivity
Electrical conductivity (EC) indicates total dissolved ions.
OptionsTDS
Total dissolved solids (TDS) is usually estimated from conductivity using a conversion factor, or measured gravimetrically by evaporation.
OptionsTurbidity
Turbidity is the key indicator of filtration performance and a pre-condition for effective disinfection.
OptionsFree & Total Chlorine
Chlorine residual proves that disinfection is working through the network.
OptionsDissolved Oxygen
Dissolved oxygen (DO) controls aeration in activated sludge, the largest energy cost at most wastewater works.
OptionsCOD
Chemical oxygen demand (COD) measures the organic load in wastewater and is used for plant loading, permit compliance and trade-effluent charges.
OptionsBOD
Biochemical oxygen demand (BOD) measures the oxygen consumed by micro-organisms breaking down organic matter, typically over five days at 20 °C.
OptionsAmmonia & Ammonium
Ammonia indicates sewage contamination in raw water and is the key control parameter for nitrification at wastewater works.
OptionsNitrate
Nitrate is regulated for health in drinking water and controlled in wastewater to manage denitrification and total nitrogen discharge.
OptionsPhosphate
Phosphorus drives algal blooms in dams and rivers.
OptionsSilica
Silica forms hard deposits on boiler tubes and turbine blades.
OptionsHardness
Hardness (calcium and magnesium) causes scaling in boilers, heat exchangers and cooling circuits, and affects softener and RO operation.
OptionsAlkalinity
Alkalinity is the water's buffering capacity.
OptionsColour
Colour in water usually comes from natural organic matter, iron or manganese.
OptionsE. coli & Total Coliforms
E. coli confirms faecal contamination and is an acute health parameter in drinking water.
OptionsATP & Hygiene
ATP bioluminescence verifies cleaning within seconds by detecting organic residue on surfaces and in rinse water.
OptionsTemperature
Temperature affects every other measurement: pH, conductivity, DO solubility and reaction rates.
OptionsORP / Redox
Oxidation-reduction potential (ORP) indicates oxidising or reducing conditions.
OptionsFluoride
Naturally high fluoride occurs in groundwater in parts of South Africa, including areas of North West, Limpopo and the Northern Cape.
OptionsSuspended Solids & Sludge
Suspended solids measurements control sludge age, wasting and clarifier performance at wastewater works.
OptionsTOC
Total organic carbon (TOC) measures organic contamination directly.
OptionsAlgae (Chlorophyll & Phycocyanin)
Algal blooms in dams and reservoirs raise treatment costs, cause taste and odour problems and can release toxins.
OptionsTell us what you need to measure
Send a product list, part numbers or a tender specification. Our technical team will recommend and quote the right solution.