Macherey-Nagel, 92120, pH-Fix 4.5-10, Box of 100 Strips;

Non-bleeding indicator strips. Gradation of scale: 4.5 - 5.0 - 5.5 - 6.0 - 6.5 - 7.0 - 7.5 - 8.0 - 8.5 - 9.0 - 9.5 - 10.0