Weigh and record the weight of each strip to the nearest 0.1 mg. Handle the strips with forceps after polishing. Except for the tinned iron strips, further abrade the test strips on all surface areas with 1200 silicon carbide paper wet with ethanol (isopropanol when testing DOT 5 SBBF fluids), again using a new piece of paper for each different type of metal. Use a new piece of paper for each different type of metal. Except for the tinned iron strips, abrade corrosion test strips on all surface areas with 320A silicon carbide paper wet with ethanol (isopropanol when testing DOT 5 SBBF fluids) until all surface scratches, cuts and pits visible to an observer having corrected visual acuity of 20/40 (Snellen ratio) at a distance of 300 mm (11.8 inches) are removed. (8 ☏.), average them to determine the wet ERBP otherwise repeat and average the four individual ERBPs as the wet ERBP of the brake fluid. Measure the water contents of the test fluid specimens in accordance with S7.2 and determine their ERBP's in accordance with S6.1. Allow the sealed jars to cool for 60 to 90 minutes at 23° ±5 ☌. remove the two test fluid specimens from their desiccators and promptly cap each jar tightly. When the water content of the SAE fluid reaches 3.70 ☐.05 percent by weight (average of the duplicates). of fluid from each SAE TEGME sample during the humidification procedure. from each TEGME sample and determine its water content. Using a long needled hypodermic syringe, take a sample of not more than 2 ml. At intervals, during oven humidification, remove the rubber stoppers in the tops of desiccators. (122 ☏.) controlled oven and replace desiccator covers. Repeat for the second sample of test brake fluid and TEGME in a second desiccator. Place one sample each of the test brake fluid and the prepared TEGME sample into the same desiccator. The water content of the SAE TEGME fluid is adjusted to 0.50 ☐.05 percent by weight at the start of the test in accordance with S7.2. Prepare in the same manner a duplicate test fluid sample and two duplicate specimens of the SAE TEGME referee material (350 ±5 ml. of brake fluid into an open corrosion test jar.
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