Reliable color control of transparent liquids
The color of transparent liquids is critical as a change can indicate contamination or impurities in the raw material or process variations caused by heating and oxidation.
Visual tests have been established by comparing the sample to a known standard. The standard that the sample falls closest to then becomes the value for the liquid.
The Gardner Liquid Color Standard Comparator provides the entire Gardner Color Scale, against which a liquid sample can be visually compared.
The Gardner Delta Color Comparator is an arrangement of two wheels in which nine precision-polished color filters are imbedded in each wheel. The glass filters range in color from water white through deep amber.
A tube of the sample liquid is placed between the two filter wheels. The user then rotates the color wheels until the filter glass closest in color to the liquid is in place. That filter notation then becomes the color description for the liquid.
For simplicity, one dimensional scales for yellowness were established: Gardner, Hazen, Saybolt, Iodine.
BYK-Gardner offers a complete line of visual color comparators and objective instruments for liquid color measurement.
The LCM and LCS IV are reliable color instruments which replace conventional visual color evaluation with an objective measurement. They are ideal for routine production control of clear, transparent liquids and give reliable data on a consistent basis.
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