NMC ND6 YG NON DETECTABLE UNDERGROUND TAPE, CAUTION BURIED GAS LINE BELOW, 6''X1000' (1 ROLL) General Safety *5 1 2" probe * 3' *5 1 2" probe * 3' sensor cable *Triple function *Upper and lower limits *Dual progress display *Counts up and down 24 hours by hour minute *Stainless steel probe *Big digits with clock and alert *Stop and restart *Last count recall *Sliding mode switch *Temperature guide *14 392F * Users of quaternary sanitizers are to have on hand a test procedure to show that their solutions have proper concentrations required* Provides immediate verification of the solution strength* Also detects exhaustion's of solutions that should be replaced and will avoid the use of excessive amounts of quat compound* For determining the concentration of Quaternary Ammonium * Compounds in the range of 0 to 400 ppm (0 100 200 300 400 ppm) * The QT test paper works best in non alkaline quats NON DETECTABLE UNDERGROUND TAPE CAUTION BURIED GAS LINE BELOW