Oakton WD-05942-45 - Buffer 7pH 3.8 Liter 4/Case
Buffer is colored for quick-glance recognition and does not affect accuracy or stability. As of April 2018, Oakton will be using yellow for the color reference of the pH 7 buffer solution instead of green.
Standardized against NIST-traceable pH references for meters with 0.01 resolution. Sold as a case of four jugs; 1-gallon bottles are also available individually.
Store buffers away from direct sunlight.