Supplier: Hach. Description: Accessory for UV/Visible spectrophotometers, Complete tube set includes Tygon tubing (1,70 m), pump tubing (lagoprene pre-assembled with cover and connections) and stainless steel tube adapter, For: DR 3900. ,HACHLZV875EA,705-0997EA,HACHLZV537EA,HACHLZV566EA,705-0995EA,HACHLZV846EA,HACHLZV582EA.