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IP 444: Determination of the cloud point of petroleum products - Automatic stepped cooling method
- Method adopted/last revised:
- Method reapproved: 2021
- REF/ISBN:
- Status: Current
- First printed in STM books: 2009
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This standard specifies a procedure for the determination of the cloud point of petroleum products and biodiesel fuels that are transparent in layers 40 mm in thickness. It employs a microprocessor-controlled automatic instrument with an optical detection device to record the appearance of the cloud point. The test method is applicable to products with cloud points in the range of 60 °C to +49 °C. The test method produces results to the nearest 0,1 °C, which when rounded to the nearest lower integer, show no significant relative bias to the results obtained by the manual procedure IP 219/ASTM D2500, but with improved precision.
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