Indicator papers, general purpose strips. Chart readings 0,10,25,50,100, 250 & 500ppm. Description Nitrate test Range 10-500ppm Used in many industrial as well as laboratory applications. Includes comparison chart.
Indicator papers, general purpose strips. Chart readings 0,10,25,50,100, 250 & 500ppm. Description Nitrate test Range 10-500ppm Used in many industrial as well as laboratory applications. Includes comparison chart.