LaMotte 2020, Instruction Manual

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PREPARATION OF TURBIDITY FREE WATER
An accessory package (Code 1800, not included) is available for preparing
turbidity free water for dilution of high turbidity samples.
The preparation of turbidity free water requires careful technique. Introduction of
any foreign matter will affect the turbidity reading. A filtering device with a
special membrane filter is used to prepare turbidity-free water. The filter, filter
holder, and syringe must be conditioned by forcing at least two syringes full of
deionized water through the filtering apparatus to remove foreign matter. The
first and second rinses should be discarded. Turbidity-free water as prepared below
may be stored in the dark at room temperature in a clean glass bottle with a screw
cap and used as required. The storage container should be rinsed thoroughly with
filtered deionized water before filling. The water should be periodically inspected
for foreign matter in bright light.
See procedure on next page...
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