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MIL-A-8243B <br /> fF 4.2.2 Sampling for tests - A sample of finished anti-icing <br /> and deicing-defrosting fluid shall be selected at random in accordance with <br /> Method 8001 of Standard Fed-Test Method-STD No. 791 (ASTM-D270) and sub- <br /> jected to all the applicable tests of this specification as described under <br /> "Test Methods." If the sample fails any of the tests, the lot represented <br /> by the sample shall be rejected. <br /> fiI 4.2.3 Sampling for inspection of filled containers - A <br /> random sample of filled containers shall be selected in accordance with <br /> Standard MIL-STD-105. The inspection level shall be I and the acceptable <br /> quality level (AQL) shall be 2.5 percent defective. Containers stall be <br /> examined to verify compliance with all stipulations of this specification <br /> regarding fill, closure, packing, marking and other requirements not <br /> involving tests. Each sample filled container shall also be weighed to <br /> determine the amount of contents. <br /> I <br /> 4.3 Test methods - <br /> 7 <br /> 4.3.1 Alkaline earths - Ten milliliters of the anti-icing <br /> fluid shall be placed in a 30-milliliter test tube. The fluid shall be <br /> made alkaline to litmus with ammonium hydroxide solution after which shall <br /> be added 5 milliliters of 95-percent ethyl alcohol, reagent grade. Five <br /> milliliters of 0.5N ammonium oxalate shall then be added and the solution <br /> visually examined for evidence of precipitation. No immediate precipitate <br /> shall form. <br /> I <br /> 4.3.2 Chlorides - Ten milliliters of the anti-icing fluid <br /> shall be placed in a 30-milliliter test tube. Ten milliliters of distilled <br /> water shall be added and thoroughly mixed with the fluid. Ten drops of <br /> concentrated nitric acid shall be added, the mixture thoroughly agitated <br /> and then filtered. Ten drops of a 3-percent aqueous solution of silver <br /> nitrate shall be added to the filtrate and the mixture allowed to stand <br /> for 30 minutes. No precipitate shall settle out within 30 minutes after <br /> the addition of the silver nitrate. A slight turbidity shall not be cause <br /> for rejection. <br /> 4.3.3 1,2-glycol content - <br /> 4.3.3.1 Reagents - The following reagents shall be used in <br /> the determination of the 1,2-glycol content of the anti-icing fluid j <br /> (i.e. , glycols having adjacent hydroxyls in their molecular structure) : <br /> 4 <br />