pH Indicator Paper, Macherey-Nagel Duotest refill

For determination of pH-value. Duotest indicator paper has two different indicator zones on a single paper, separated by a hydrophobic zone. The two zones guarantee optimal color differences and safe determination of values. Refill package, recommended for mounting in plastic reels.

• pH range: 5,0 - 8,0
• Indicator fields: 5,0 - 5,3 - 5,6 - 5,9 - 6,2 - 6,5 - 6,8 - 7,1 - 7,4 - 7,7 - 8,0
• Packaging size: 3 rolls of 5 m