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pH Calibration Solutions

Choose from economical solution bottles or individually sealed pH buffer pouches.

  NIST traceable materials
  Labeled with pH vs temperature tables for accurate calibration

All Oakton pH buffer solutions are freshness dated, and standardized against NIST-traceable references to ensure quality. ±0.01 pH at 25°C.

OAKTON pH buffer solution bottles are labeled with the name and CAS number for all ingredients (for“Right-to-Know” requirements), and are supplied with an MSDS (Material Safety Data Sheet).

OAKTON pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W x 4.5"H (box). Shpg wt 1 lb per box.

Click below to download a .pdf copy of the solution MSDS:
MSDS, pH 1.68 solution
MSDS, pH 4.01 solution
MSDS, pH 7.00 solution
MSDS, pH 10.00 solution
MSDS, pH 12.45 solution


click on image to enlarge

Model # Description Suggested List Price Qty  
WD-00654-00 pH 4.01 buffer, 500 mL bottle $14.25
WD-00654-01 pH 1.68 buffer, 500 mL bottle $15.50
WD-00654-04 pH 7.00 buffer, 500 mL bottle $14.25
WD-00654-08 pH 10.00 buffer, 500 mL bottle $14.25
WD-00654-12 pH 12.45 buffer, 500 mL bottle $15.50
WD-35653-01 pH pouches 4.01, 20 pouches/box $36.00
WD-35653-02 pH pouches 7.00, 20 pouches/box $35.75
WD-35653-03 pH pouches 10.00, 20 pouches/box $35.75
WD-35653-04 pH pouch assortment, 5 each of pH 4.01, 7.00, 10.00 & rinse water pouches. 20 pouches/box $35.75
WD-35653-00 Deionized rinse water pouches, 20 pouches/box $39.00
WD-05942-26 4.000, high accuracy pH buffer, 500 mL, +/-0.002 @ 25°C $15.20
WD-05942-22 pH 4.01 buffer, 1L bottle $24.00
WD-05942-42 pH 7.00 buffer, 1L bottle $24.00
WD-05942-62 pH 10.00 buffer, 1L bottle $24.00
WD-05942-24 pH 4.01 buffer, 4L bottle $47.75
WD-05942-44 pH 7.00 buffer, 4L bottle $47.75
WD-05942-64 pH 10.00 buffer, 4L bottle $47.75
WD-35654-00 pH 4.01 buffer, case of (24) 500 mL bottles $229.61
WD-35654-04 pH 7.00 buffer, case of (24) 500 mL bottles $228.85
WD-35654-08 pH 10.00 buffer, case of (24) 500 mL bottles $229.62
WD-05942-10 pH buffer Pack includes 500 mL bottle each of 4.01, 7.00 & 10.00 standards $32.50
WD-05942-46 7.000, high accuracy pH buffer, 500 mL, +/-0.002 @ 25°C $15.20
WD-05942-66 10.000, high accuracy pH buffer, 500 mL,+/-0.005 @ 25°C $16.88

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OAKTON Instruments: setting the standard, again and again™
OAKTON Instruments P.O. Box 5136, Vernon Hills, Il USA 60061 info@4oakton.com