DO NOT
DO NOT: change probe types (switch between BNC and ISFET probes)
while the meter is turned on. Always turn off the meter before changing
probes.
DO NOT: simultaneously use ISFET and BNC probes. Only have one type
of probe attached to the pH meter at a time.
DO NOT: store an ISFET probe in solution or use for long-term pH
measuring applications. Unlike BNC electrodes, stainless steel ISFET
electrodes should be stored dry. Extended immersion will shorten the life of
the probe.
DO NOT: leave an ISFET probe uncapped for long periods of time. Always
place the protective cap over the probe tip when finished measuring.
DO NOT: allow oil, fat, food particles, starch, protein, or other materials to
remain on the probe tip after use.
DO NOT: use a sharp metal object (needle, pin, etc.) to clean the sensor
surface.
DO NOT: take readings in direct sunlight. Direct sunlight may cause unstable
readings or difficulty in calibration. Call IQ Scientific Instruments or your
Authorized Dealer for optional light shields.
DO NOT: use the probe in an environmentthat will damage the pH sensor,
such as hydrofluoric acid or abrasive samples.
DO NOT: use the probe in environments that will damage the epoxy
materials used in probe construction, such as, acetone, toluene, methylene
chloride, xylene, and other strong organic solvents.
DO NOT: use in environments with static electricity. Electrostatic discharge
may permanently damage the probe.
DO NOT: expose the ISFET probe to repeated temperature extremes (60 oC or
higher). Do not use the probe for applications that require the probe to cycle
between hot and room temperature samples.
DO NOT: put any other active measurement devices in buffers or samples
while measuring pH. Even if another device is not actually turned on, AC
power interference can still occur, especially if the pH meter AC battery adapter
is in use.
