Serim HiSENSEULTRA 0.1™ Test Strips provide a quick and convenient test for indicating low levels of total chlorine(chloramines/free chlorine) in feed water used to prepare dialysate. This test can also be used to test the concentration of residual chlorine after rinsing dialysis lines following disinfection with a chlorine solution. Kit contains one bottle of 100 tests plus one sample cup