Aquadur - Test Papers (#91201)
Pack Size: box of 100 strips. Hazard Class /UN Number: Not Restricted. Storage Temp: Room Temperature. Test sticks for determination of the water hardness. The hardness of water depends on its content of calcium and magnesium salts. When measuring the total hardness, the sum of these salts is determined. Gradation of scale:90 · >180 · >270· >360 · >445 ppm.