pH 4.01 Buffer Solution (20ml)
This Hanna 4.01 buffer solution is certified and will give you an accurate reading of +/- 0.01pH. Hanna Instruments are known around the world for their accuracy and simplicity of use.
| Description: | Should you run out of your storage solution this may be used until such time as you have more on hand. |
| Usage: | Thoroughly clean your pH meter before testing or the reading may not be accurate |
