Acid Wash (ASTM D848)

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This colorimetric test refers to refined products of coal tar consisting essentionally of hydrocarbons boiling below 200oC and substantially free from phenols and pyridine bases.

It is designed to give an indication of impurities found in Industrial Aromatic Hydrocarbons which, if sulphonated, would cause the material to be discoloured. These materials include benzene, toluene, xylenes, refined solvent napthas and other similar industrial hydrocarbons.

Please note. The digitial Acid Wash Test (ASTM D 848) Colour Scale upgrade for the PFX/PFXi-195 and PFX/PFXi-880, -950, -995 Series includes the following items:

  • Tube Holder Base & Accessories.
  • Acid Wash Shaking Tube x2.
  • Acid Wash tube.
  • Full Instructions.


  • Chemicals
  • Petroleum Oils and Waxes
Applicable Standard ASTM D848