pH Calibration Buffer Solution
A premium quality pH 4.01 calibration solution. Each sealed sachet holds just the right amount of pH buffer solution making every sachet as fresh as the day it was packaged!
- Highly portable, with a small footprint and a lightweight design
- Color-coded label for easy identification of pH 4 buffer value (red)
- Perfect for use with testers and portable meters!
- Supplied with Certificate of Analysis
- Accuracy of +/- 0.01 pH @ 25°C
- Temperature chart of the actual pH value at various temperatures printed on each sachet
- Hanna pH buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened sachet.
Can purchase a pack of x25 20ml sachets or 20ml sachet individually