Buffer 4.01 Standard

Buffer solution lets you calibrate any pH tester to ensure accuracy. Choose from pH 4, 7 or 10.
• Solution helps you achieve the accuracy that’s critical for measuring pH in wastewater, storm water and process liquids
• Makes calibration easy – just adjust your tester to the pH measurement of the solution in a clean container
• Choose from pH 4, 7 or 10 solution
• If unopened, shelf life is 2 years; once opened, use pH 4 and pH 7 within 90 days, pH 10 within 30 days