Author Description

"The results of interlaboratory quality control study No. 14 are described. This study was carried out during the spring and summer of 1975. It included three natural waters and two standard solutions. Data were submitted from 36 participating Canadian laboratories. The parameters were calcium, magnesium, sodium, potassium, hardness, alkalinity, chloride, sulphate and nitrate. Samples were at concentrations similar to natural inland waters. All samples were distributed without preservatives"--Abstract, page v