13. Cleaning the Prism
◇ Handle all harmful substances with extreme caution.
Fully understand a sample's properties before applying to this instrument.
Ensure no harmful sample substances are present when dismantling.
Temperature of the cleaning liquid
◇ When using high-temperature cleaning solution, such as during CIP, be sure the temperature of the
cleaning solution is less than 165˚C.
◇ The momentary difference between the sample temperature and the cleaning solution temperature
must be no more than 80˚C.
When samples flow through the sample inlet for a long period of time, it is possible that solids or oils
adhere to the surface of the prism, and this build-up can affect readings.
Cleaning by hot water or alkaline liquid, called CIP cleaning, is recommended for removal of prism
build-up.
If matter adhering to the surface of the prism cannot be removed by such cleaning, it is necessary to clean
the surface of the prism directly. Follow these steps:
① Detach the detection section from the sample inlet unit.
② Clean the surface of the prism using soft tissue paper moistened in lukewarm water or ethyl alcohol.
For a liquid containing oils and fats, wipe out with soft tissue paper moistened in ethyl alcohol.
Never scrub the surface of the prism with a hard object, otherwise flaws will develop.
③ Remount the sample inlet unit in its original position.
Fig.13-1
To Next Page
Loading...
