ASTM D6181 Measurement of Turbidity in Mineral Insulating Oil of Petroleum Origin
Turbidity, which is a measure of cloudiness or haziness in oil, is typically caused by suspended matter. It may be an indication of contamination, degradation or trapped water. This test determines the turbidity on the NTU (nephelometric turbidity unit) scale which goes from 0 to 500, where 0 is a clear oil and 500 is an extremely turbid oil.
The sample is placed into the specimen cell and the cell is inserted into the turbidimeter. The turbidity is read and reported in NTUs.
This method is considered obsolete by ASTM.
Note: This test is still offered by Petro-Lube as a service to our clients.
Price: $82.00
Sample size: 100 ml
Related tests:
- ASTM D2500 – Cloud Point of Transparent Fluids
- ASTM D3430 – Clarity and Yellowness by Colorimeter
- FTM-202 – Cloud Intensity, Barium Chloride Technique
- FTM-3458 – Stability, Low Temperature @ 72 hrs; visual turbidity
- FTM-3459 – Stability, Low Temperature @ 72 hrs; Barium Turbidity Standard
- PLTL-13 – Low Temperature Turbidity MIL-DTL-17111