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 TDS Meter 3
 TDS Meter 4
 TDS Meter 4TM
 EC/TDS Combo Meter
 Waterproof pH Meter
 Waterproof ORP Meter
 Quick Check Monitor
 Single TDS Monitor
 Dual TDS Monitor
 Dual TDS Monitor 2
 Clean Tap Monitor
 Purity Monitor
 External Purity Monitor
 RO Monitor
 Panel Mount Controller
 Dual TDS Controller
 Dual Display Controller
 Conductivity Controller
 Calibration Solutions
 pH Buffers
 ORP Buffers & Test Kit
  • Variety pack of ORP buffer solution.
  • Test kit to check the quality of your ORP electrode.
  • Simple to use.
  • Powder has an indefinite shelf life.

For optimal performance, re-calibrate your ORP 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: 1.0 liter. Each powder packet makes 100 ml of solution (when mixed with distilled or deionized water)
  • Contents: 2 packets of +92mV, 2 packets of +265mV
  • Includes three empty 100 ml bottles
  • Accuracy: +/- 0.2 ORP at 25 degrees Celsius
  • Preparation directions included with the kit

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