Oakton WD-00654-04 pH Buffer Reference Standard Solution for Calibration, pH 7.00 ± 0.01, 500mL

Oakton buffers for meters with 0.01 resolution are standardized against NIST-traceable pH references within 0.01 pH at 77°F (25°C). 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.