PH TESTER CALIBRATION SOLUTION - PH 4/7/10

The calibration buffer solution for PH calibration consists of 12 sachets:

• 3 sachets pH 4.0
• 6 sachets pH 7.0
• 3 sachets pH 10.01

Each sachet of powder for the calibration solution produces a 100 mL soluble solution which is compounded by mixing with distilled or deionized water. Obviously, the entire pack of 12 sachets produces a total volume of solution equal to 1.2 litres.

The package includes an empty 100 ml container for the preparation of the calibration solution, as regards the precision of the pH value calibration action it is equal to +/- 0.02 pH at 25°C

The correct use of the solution and the preparation procedure are indicated inside the package.