HI 739 Fluoride High Range
Quick Reference Guide
w w w . h a n n a i n s t . c o m
TECHNICAL SPECIFICATIONS
•
Range
:
0.0 to 20.0 ppm
•
Resolution
:
0.1 ppm
•
Accuracy
:
±0.5 ppm ±5 % of reading @ 25 °C / 77 °F
•
Typical EMC Dev.
:
±0.1 ppm
•
Light Source
:
Light Emitting Diode @ 575 nm
•
Light Detector
:
Silicon Photocell
•
Method
:
Adaptation of the
Standard Methods for the Examination of
Water and Wastewater, 18
th
edition
, SPADNS method.
•
Environmental
:
0 to 50 °C (32 to 122 °F);
max 95% RH non-condensing
•
Battery Type
:
1 x 1.5V AAA
•
Auto-Shut off
:
After 10 minutes of non-use
•
Dimensions
:
81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 ”)
•
Weight
:
64 g (2.25 oz.)
TIPS FOR AN ACCURATE MEASUREMENT
• It is important that the sample does not contain any debris.
• Whenever the cuvette is placed into the measurement cell, it must be dry outside, and
completely free of fingerprints, oil and dirt. Wipe it thoroughly with
HI 731318
or a lint-
free cloth prior to insertion.
• Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate
measurements, remove bubbles by swirling or by gently tapping the cuvette.
• Do not let the reacted sample stand for too long after reagent is added, as accuracy will
be affected.
• After the reading it is important to immediately discard the sample, otherwise the glass
might become permanently stained.