• Variety pack of pH buffer solution.
• Simple to use.
• Powder has an indefinite shelf life.

For optimal performance, re-calibrate your pH meters on a regular basis.

HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life.

Make only what you need, when you need it.

• Total volume: 1.2 liters. Each powder packet makes 100 ml of solution (when mixed with distilled or deionized water)
• Contents: 3 packets of 4.0 pH, 6 packets of 7.0 pH, 3 packets of 10.01 pH
• Includes one empty 100 ml bottle
• Accuracy: +/- 0.02 pH at 25 degrees Celsius
• Preparation directions included with the pack