Oakton WD-00654-00 pH Buffer Reference Standard Solution for Calibration, pH 4.01 ± 0.01, 500mL

The Oakton Economical one-pine buffer solution bottles are freshness dated - and standardized against NIST-certified references to ensure quality. Bottles are labeled with the name and CAS number for all ingredients (for 'Right-to-Know' requirements). The high- accuracy solutions are ideal for pH meters with 0.001 resolution. Store buffers away from direct sunlight. Sold in individual bottles; 500-mL bottles are also available in cases of 12 - 4-L bottles in cases of four.

Oakton buffers for meters with 0.01 resolution are standardized against NIST-traceable pH references within 0.01 pH at 77°F (25°C).
All Oakton pH buffer solutions are freshness dated and labeled with pH vs temperature tables for accurate calibration.

Store buffers away from direct sunlight. Sold in individual bottles; 500-mL bottles are also available in cases of 12, 4-L(1-gal) bottles in cases of four.