These Duo indicator papers show two different colours for each pH-value.
- Easy to use for qualitatively accurate readings
- Produced from high quality paper to give good colour matching of paper to printed calibration scale
- Narrow range papers with graduation intervals of 0.3 pH units on the colour scale
- Wide range papers with graduation intervals up to 1 pH unit on the colour scale
Informace o dodávce: Supplied in plactic reels that ensure protection and long-term stability. Reel of 5 m length, width: 10 mm