The Karl Fischer water content analysis of these slightly viscous oils is straightforward. Reproducible results and stable end-points were obtained using volumetric or coulometric titration. Volumetric titration requires additional solvent like chloroform or xylene in proper ratio. A direct coulometric analysis does not require any additional co-solvents when working with Hydranal-Coulomat AG-H. The addition of xylene, chloroform or toluene enhances sample solubility, especially when large sample quantities are analysed.
Download the full Laboratory Report for Lubrication Oils for Compressors (L 359) here
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