Brady 91601 1000' Length, 2" Width, B-721 Metal Detectable Polyester, Black On Red Color Detectable Identoline Warning Tape - Electric, Legend "Caution: Buried Electric Line Below"

Brady 91601 detectable identoline warning tape - B-721 metal detectable polyester material with subsurface graphics to seal the legend is from acids, alkalis and other soil substances. Brady B-721 is a printed foil laminate tape. It is use for aid in locating buried utility lines. It is installed below ground level directly over the line it protects. Special properties are B-721 can be detected at depths up to 18 inches with most inexpensive radio type metal detectors. Aluminum foil core sandwiched between two layers of polyester. The top layer is subsurface printed. 25 Lb/inches (740 n/100 mm) tensile strength (ASTM D 638), 50 percent elongation, abrasion resistance (method 5306 of U.S. federal test method standard no. 191A) CS-10 wheels, 250 g weights, legend is withstands up to 10,000 cycles, simulated underground burial test is (a solution of pH 7.1 prepared by adding 50 percent sulfuric acid to a 10 percent (wt.) solution of Na2S9H20 in water.) no discoloration of film or bleed of Legend is. Foil is 5 mils and standard roll. Measures 1,000' length by 2" width. Legend is "CAUTION: BURIED ELECTRIC LINE BELOW" black on red color, B-721 metal detectable polyester material.