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Test medium for the rapid analysis of motor oils in internal combustion engines

  • US 8,748,185 B2
  • Filed: 12/08/2005
  • Issued: 06/10/2014
  • Est. Priority Date: 12/08/2004
  • Status: Expired due to Fees
First Claim
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1. A paper test medium for the rapid analysis of engine oils in internal combustion engines comprising, based on the total weight of said paper test medium, 70.0% by weight to 98.0% by weight of cotton pulp, 0.0% by weight to 50.0% by weight of cellulose, and 0.5% by weight to 30.0% by weight of silicic acid and/or at least one silicate, wherein said paper test medium has a weight per unit area of 50.0 to 200.0 g/m2 and is coated with said silicic acid and/or at least one silicate.

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