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Genuine OHAUS water analysis solutions — replacement and expansion parts engineered for OHAUS instruments. Select the part number that matches your unit; part compatibility is listed in each item's description.

Models

Part NumberModel
OH-30059255pH electrolyte (KCl saturated AgCl, 30ml
OH-30059256pH electrode protection solution(3M KCl)
OH-30059257Zero Oxygen Chemicals, STARTER
OH-30100424Buffer pH1.68 250ml
OH-30100425Buffer pH4.01 250ml
OH-30100426Buffer pH6.86 250ml
OH-30100427Buffer pH7.00 250ml
OH-30100428Buffer pH9.18 250ml
OH-30100429Buffer pH10.01 250ml
OH-30100440Buffer pH12.45 250ml
OH-30100442Standard Conduct 84µS/cm 250ml
OH-30100443Standard Conduct 1413µS/cm 250ml
OH-30100444Standard Conduct 12.88mS/cm 250ml