ORP Buffer Solution / Electrode Test Kit

MET-FL-0006 ORP buffer solution and electrode test kit for the HM Digital ORP-200 meter 
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£22.00 inc-VAT


This is a buffer solution and electrode testing kit for HM Digital's ORP-200, which is used to calibrate the meter as well as assess the condition of the ORP probe. This kit includes five sachets of ORP +92mV solution, five sachets of ORP +265mV solution, three 100ml bottles and preparation instructions. 

Total quantity amounts to 1 litre. We also offer ORP storage solution which is designed for a variety of HM Digital's meters, including the ORP-200.


  • Includes:
  • 5 x ORP +92mV
  • 5 x ORP +260mV
  • 3 x 100ml bottles

Technical Information

  • Composition: ORP +92mV (pH 4.0/Quinhydrone)
  • Potassium hydrogen phthalate (red dye) (50%)
  • Quinhydrone (50%)
  • Composition: ORP +265mV (pH 7.0/Quinhydrone)
  • Sodium phosphate dibasic
  • Potassium phosphate monobasic (yellow dye)
  • Quinhydrone
  • Accuracy: +/- 0.02 at 25 °C
  • Total quantity: 1 litre
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