NMC ND6 YG NON DETECTABLE UNDERGROUND TAPE, CAUTION BURIED GAS LINE BELOW, 6''X1000' (1 ROLL) General Safety Best’s shoulder length hand protection is Best’s shoulder length hand protection is ideal for chemical manufacturers * 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 CAUTION BURIED GAS LINE BELOW NON DETECTABLE UNDERGROUND TAPE