Hanna Instruments HI 739 Quick Reference Manual

HI 739 Fluoride High Range
Quick Reference Guide

TECHNICAL SPECIFICATIONS

• Range: 0.0 to 20.0 ppm
• Resolution: 0.1 ppm
• ±0.5 ppm ±5 % of reading @ 25 °C / 77 °F
Accuracy:
• 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
• 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 ")
• 64 g (2.25 oz.)
Weight:

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.
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