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Home > Testing Services > Test List > Water by Crackle %

Water by Crackle %

Definition:

Water by Crackle % result is measured by placing a few drops of oil on a hot plate that is heated to 150° C. Positive water will bubble and crackle. Test is an estimate of % by volume and POLARIS only reports an estimate up to 0.5%. The test is very subjective beyond 0.5%.

Standard Test Method Used:

POLARIS Method

Reporting Measurement:

% of volume reported is 0.1 - 0.5%

Amount of Sample Needed:

2 mL

Test Limitation:

Accurate readings are difficult on emulsified fluids. Test is subjective and requires a minimum of 0.1% or 1000ppm to indicate a positive result. Should only be considered as a screening device for industrial hydraulics, gear boxes, compressors, bearing systems or turbines. Karl Fischer water should be performed on these unit types.


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