Tests marked * are ISO17025 accredited
A UKAS ISO 17025 accredited method to determine pH, using a meter in the range of pH 4 to pH 12.45 The pH scale gives a measure of acidity or alkalinity at a specified temperature (20ºC or 25ºC). Sample types tested are final effluent This method complies with BS EN ISO 10523.
|Total Suspended Solids*||
A UKAS ISO 17025 accredited method to determine suspended solids present final effluent by filtration through glass fibre filters. The lower limit of the determination is about 2mg/l. No upper limit has been established. Water samples are not always stable which means that the content of suspended solids depends on storage time, means of transportation, pH value and other circumstances. Results obtained with unstable samples need to be treated with caution. Floating oil and other immiscible organic liquids will interfere (see EN 872, Annex A). This method complies with EN 872.