Color change of pink to a deep purple-red indicates the presence of lead in solutions or on surfaces. Limits of sensitivity: 0.05 micrograms on surfaces, 5 milligrams/liter (5 ppm) in solutions. The presence of as little as 50 ppb in solution can be determined by using evaporation techniques. Forty 25 x 40 mm size sheets.
1-800-452-1261
