Hanna Instruments HI 93710 - Manual (Page 6)

6
The instruction listed below should be carefully followed during testing
to ensure best accuracy.
• Do not let the test sample stand too long after reagent is added or
accuracy will be lost.
• Whenever the cuvet is placed into the measurement cell, it must be
completely free of fingerprints, oil or dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.
• It is important that the sample does not contain any debris. This
would corrupt the readings.
• Each time the cuvet is used, the cap must be tightened to the
same degree.
• It is possible to take multiple readings in a row, but it is
recommended that a zero reading be taken for each sample and
that the same cuvet is used for zeroing and measurement.
• It is important to discard the sample immediately after the
reading is taken because the glass might become permanently
stained.
• Shaking the cuvet can generate bubbles in the sample, causing
higher readings. To obtain accurate measurements, remove such
bubbles by swirling or by gently tapping the vial.
• All the reaction times reported in this manual are referred to
20°C (68°F). As a general rule of thumb, they should be doubled
at 10°C (50°F) and halved at 30°C (86°F).
TIPS FOR AN ACCURATE MEASUREMENT TIPS FOR AN ACCURATE MEASUREMENT TIPS FOR AN ACCURATE MEASUREMENT TIPS FOR AN ACCURATE MEASUREMENT TIPS FOR AN ACCURATE MEASUREMENT
COMMON SPECIFICATIONS COMMON SPECIFICATIONS COMMON SPECIFICATIONS COMMON SPECIFICATIONS COMMON SPECIFICATIONS
All the ion specific meters in this manual have the following common
features:
Light Life
Life of the instrument
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type/Life 1 x 9 volt/40 hours
Auto-Shut off
After 10' of non-use
Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
Weight 290 g (10 oz.)