Manual

a. Press or .

b. Press .

c. Press key until “FAC” appears and release.

d. Press to accept the factory calibration setting.

4. pH Calibration (D-6)

ALWAYS calibrate a Digital Dialysate Meter™ pH function at Zero

Point with a pH 7.0 buffer solution BEFORE performing either the

Acid or Base gain calibration.

• TheAcid/Basegaincalibrationsmaybedoneineitherorder.

Read Proper Handling of Reference Solutions, pg. 16, before

attempting pH calibration.

Calibrating the pH function of a Digital Dialysate Meter™ is a three-

stepprocess.ZeroPointcalibrationisalwaysdonerst.Steps2and3

can be performed in either order.

STEP 1: Zero Point Calibration (7.0 pH buffer)

STEP 2: Gain Calibration – Acid (4.0 pH buffer)

STEP 3: Gain Calibration – Base (10.0 pH buffer)

a. pH Zero Calibration (D-6)

1. Rinse pH/ORP sensor well and conductivity cell 3 times with 7

buffer solution.

2. Rellbothsensorwellswith7buffersolution.

3. Press to verify the pH calibration. If the display shows

7.00, skip the pH Zero Calibration and proceed to section b.

pH Gain Calibration, pg. 21.

4. Press to enter

calibration mode. The

“CAL”, “BUFFER” and “7”

annunciators will appear

(see Figure 5).

Displayed value will be the

uncalibrated sensor.

Figure 5

BUFFER

CAL