12.20 Tubes And Accessories

Depending on the application, various tubes are available for groundwater sampling. The tubes vary in diameter, length, type of material and package. Polyethylene tubes are produced according to KIWA BRL K64405/01. Silicon rubber tubes are tested within the ETU-hallmark. During this test the products are subjected to a strict, selective leaching procedure for establishing the degree of discharge of toxicological substances to water.

Polyethylene tube is most commonly used as a transport tube for groundwater samples. To avoid cross contamination to other wells the tube is used only once. The tube meets the physical-chemical requirements as laid down in the DIN 8072 standard and the ETU-hallmark.