Myron-l TH1 User Manual download pdf (Page 12)

IV. AFTER USING the TechPro II

A. Maintenance of the Conductivity Cell (TPH1& TP1)

Rinse out the cell cup with clean water. Do not scrub the cell. For oily lms,

squirt in a foaming non-abrasive cleaner and rinse. (ref. Conductivity or

TDS, pg. 20). Even if a very active cbhemical discolors the electrodes,

this does not affect the accuracy; leave it alone.

B. Maintenance of the pH Sensor (TPH1 & TH1)

The sensor well must be kept wet with a solution. Before replacing the

rubber cap, rinse and ll the sensor well with Myron L pH Sensor Storage

Solution. If unavailable, use an almost saturated KCl solution, pH 4 buffer

(ref. pH Buffer Solutions, pg. 24) or a saturated solution of table salt and

tap water. NEVER USE DISTILLED WATER (ref. pH, pg. 20).

V. SPECIFIC RECOMMENDED MEASURING PROCEDURES

Verify proper solution setting (KCl, NaCl, or 442), (ref. Solution Selection, pg. 9).

NOTE: After sampling high concentration solutions or temperature

extremes, more rinsing may be required. When sampling low conductivity

solutions, be sure the pH cap is well seated so that no solution washes

into the conductivity cell from around the pH cap.

A. Measuring Conductivity & Total Dissolved Solids (TDS)

1. Rinse cell cup 3 times with sample to be measured. (This conditions

the temperature compensation network and prepares the cell.)

2. Rell cell cup with sample.

3. Press or .

4. Note value displayed.

B. Measuring pH (TPH1 & TH1)

1. Remove protective cap by squeezing its at sides and pulling up.

2. Rinse sensor well 3 times with sample to be measured. Shake

out each sample to remove any residual liquid.

3. Rell both sensor wells with sample.

4. Press .

5. Note value displayed.

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Myron-l TH1 User Manual Page 12