Myron-l TH1 User Manual download pdf (Page 25)

chloride (KCI) solution (Myron L pH Sensor Storage Solution)—

HOT tap water with table salt (NaCl) will work ne — in the

sensor well and allow to cool. Retest.

2. Pour DI water in the sensor well and allow to stand for no more

than 4 hours (longer can deplete the reference solution and

damage the glass bulb). Retest.

If neither method is successful, the sensor must be replaced.

“Drifting” can be caused by a lm on the pH sensor bulb and/or reference

junction. Use Isopropyl alcohol (IPA) or spray a liquid cleaner such as

Windex™ or Fantastic™ into the sensor well to clean it. The sensor bulb

is very thin and delicate. Do not scrub or wipe the pH sensor.

Leaving high pH (alkaline) solutions in contact with the pH sensor for long

periods of time is harmful and will cause damage. Rinsing such liquids

from the pH sensor well and relling it with Myron L pH Sensor Storage

Solution, a saturated KCl solution or a saturated solution of table salt and

tap water, will extend the useful life.

Samples containing chlorine, sulfur, or ammonia can “poison” any pH

electrode. If it is necessary to measure the pH of any such sample,

thoroughly rinse the pH sensor well with clean water immediately after

taking the measurement. Any sample element that reduces (adds an

electron to) silver, such as cyanide, will attack the reference electrode.

Replacement pH sensors are available only from the Myron L Company

or its authorized distributors.

pH Sensor

Top View

pH Glass

Electrode

Sensor

Body

Reference

Junction

under Glass

pH Bulb

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Myron-l TH1 User Manual Page 25