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SOURCES OF INTERFERENCE
• Presence of floating debris and coarse sediments which settle
out rapidly will give false readings.
• The infrared light source used for HI 93703 turbidity meter,
according to ISO 7027 International Standard, can effectively
minimize errors due to colored dissolved substances. This
effect, named “true color“, is a common interference for most
commercially available instruments operating in the range of
visible light.
• Air bubbles and the effect of vibrations that disturb the surface
of the sample will give false results.
• Dirty glassware could also affect readings along with scratched
or edged vials.
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