9
CA
rE
&
mA
iNTENANCE
Direct Measurement
1. Rinse the electrode tip in water, shake gently to dry, and insert into the sushi-rice surface.
2. Wait for a stable measurement. Stability indicator (
#
) stops blinking when a stable measurement has been reached.
3. Rinse the electrode in distilled (or deionized) water and repeat if necessary.
Measurement of Rice Slurries
1. Mix into a white slurry one part seasoned rice (representative sample) and two parts distilled water for about 30 seconds.
2. Pour the slurry mixture into a container. With the calibrated tester verify the reading has stabilized (stability indicator
-
#
- has disappeared) and measured value is within accepted window for acidified rice.
3. If the reading is outside accepted window add more sushi seasoning and mix thoroughly and evenly. Rinse the electrode
tip in purified water and repeat the measurement.
Note:
Follow local food-authority guidelines for information on recommended ratios of rice and water, and pH limit for
sushi rice.
11. CARE & MAINTENANCE
• Never immerse the tester over the maximum immersion level.
• Fresh buffers should be used for each calibration. Once the sachets are opened the buffer value can change over time.
• If the electrode is slow or sluggish, soak it in cleaning solution for 20 minutes. Rinse with water and hydrate the
electrode in storage solution for a minimum of 30 minutes before calibrating.
• If measurements are taken successively, rinse the probe thoroughly in distilled or deionized water to eliminate
cross-contamination between measurements.
Storage
To ensure a quick response, the glass tip and junction should be kept hydrated.
1. When not in use, add a few drops of storage solution to the storage cap. If storage solution is not available, pH 4.01
or pH 7.01 buffer can be used.
Note:
Do not store the electrode in distilled or deionized water.
2. Place the probe tip into the cap and gently tighten the collar.
12. WARNING & ERROR MESSAGES
----
WRNG
“---- WRNG” displayed during calibration.
Invalid buffer.
Check the buffer value and use fresh buffer.
12.02
23.7
Measured value displayed blinking.
Measured value is out of electrode range.
Clean the electrode to improve condition.
!
8.02
23.7
Battery icon (
!
) displayed blinking.
Battery is below 10 %, replace the battery.
BAtt
DEAD
“BAtt DEAD” and tester turns off.
Depleted battery, replace the battery.
