Oakton pH 5/6 Instruction Manual

Also see for ION 6: Operating instructions

Oakton pH 5/6 Instruction Manual Manual pdf 12 page image

Instruction Manual pH 5/6 & Ion 6103.2.3 pH Calibration using NIST standard buffers1. Pour a known pH buffer standard solution into a clean container, e.g. pH 6.86.Power on meter, and it automatically enters into measurement mode. Select pHmode by pressing MODE key if necessary.2. Dip both pH electrode and temperature probe into pH 6.86 buffer solution. Swirlgently and wait for reading to stabilise (approx. 30 seconds depending on yourelectrode condition).3. Press CAL key to enter pH calibration mode. A “CA” displays momentarily and thedisplay shows the current uncalibrated reading flashing while in the calibrationmode.4. To abort or cancel calibration without accepting new value, press CAL key. Themeter then reverts to pH measurement mode.5. To proceed calibration, allow reading to stabilise. The meter automaticallyrecognises pH 4.01, 6.86 or 9.18 buffers. Press ENTER key to confirm calibrationand the LCD displays “CO” momentarily. The meter reverts to measurement mode.6. For 2 or 3-point calibration, repeat step 3 with other pH buffer values of 4.01 and/or9.18 for higher accuracy.