Ph Field Calibration Temperature Chart; How To Store And Recondition - Seametrics TempHion Instructions Manual

MAINTENANCE and REFERENCE
and the sensor may read erratically!
Excess filling solution
spills over, forcing out
any air bubbles
• Once filled, be sure the O-ring is in the upper
groove to prevent reference solution leakage and
contamination. Before deploying be sure to move
the O-ring to the lower groove to expose the
liquid junction port.

pH Field Calibration Temperature Chart

The pH of any buffer varies slightly with temperature
change. For this reason, it is important that you determine
the current pH value of the buffer you are using during
calibration. From this chart, determine the pH value at
your current buffer temperature and use this value as the
"Ref pH" value in the Settings and Calibration window. For
example, if you are using a pH buffer of 7 and your buffer
temperature is 20 degrees C, then you would enter 7.02 in
the Ref pH box.
Calibration Temperature
˚C ˚F
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122
Seametrics • 253.872.0284
pH 4.00 pH 7.00 pH 10.00
4.00 7.07
4.00 7.05
4.00 7.02
4.00 7.00
4.02 6.99
4.02 6.98
4.04 6.97
4.05 6.97
4.06 6.97

How to Store and Recondition

When storing your TempHion, care must be taken to
properly protect the electrodes, including the reference
electrode. After storage, before use, the electrodes may
need reconditioning, depending on the electrode and the
mode of storage. Seametrics' recommendations follow. If
you have further questions, please contact your Seametrics
technical support representative.
Storage
Reference Electrode
• Best if stored in filling solution.
• Alternately, can be stored in KCl.
• If storing dry, be sure to empty and clean reservoir.
pH bulb / ORP
• Best if stored in pH 4 or KCl.
• Can be stored dry, but may shorten life of bulb. In
Seametrics' experience, the bulb should last roughly
two years if typically stored dry.
ISE
• Storing dry is best.
Reconditioning
Reference Electrode
• If stored dry or in KCl, refill per maintenance section
earlier in this manual. Once refilled, let sit for 30
minutes before using.
• If stored in reference solution, no reconditioning is
needed.
pH bulb / ORP
• If stored dry, soak in 1st buffer for 4 hours before
calibrating. (Must be calibrated before use.)
• If stored in KCl or pH 4, no reconditioning is
needed.
ISE
• If stored dry, soak in 1st calibration solution for 30
minutes before calibrating. (Must be calibrated
before use.)
10.19
10.12
10.06
10.00
9.94
9.90
9.85
9.82
9.78
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TEMPHION INSTRUCTIONS
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