These tri indicator papers show three different colours for each pH-value.
High precision due to the 3 colour scale
Easy to use
Produced from high quality paper to give good colour matching of paper to printed calibration scale
Tri paper has a hydrophobic barrier between the different indicators which ensures a distinctive separation of the colour bands.
Delivery information: Supplied in plastic reels that ensure protection and long term stability. Reel of 6 m length, width: 14 mm