ASTM D1094 standard test method for water reaction of aviation fuels
6. Apparatus
6.1 Graduated Glass Cylinder, glass-stoppered, 100 mL, with 1-mL graduations. The distance between the 100-mL mark and the top of the shoulder of the cylinder must be within the range from 50 to 60 mm.
7. Reagents
7.1 Purity of Reagents - Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where such specifications are available. Other grades may be used, provided it is first ascertained that the reagent is of sufficient purity to permit its use without lessening the accuracy of the determination.
7.2 Purity of Water - Unless otherwise indicated, reference to water shall be understood to mean distilled water, or water of equivalent purity.
7.3 Acetone.
NOTE 1 - Warning: Flammable. Health hazard.
7.4 Glass-Cleaning Solution - Saturate concentrated sulfuric acid (H2SO4, sp gr 1.84) with potassium dichromate (K2Cr2O7) or sodium dichromate (Na2Cr2O7).
NOTE 2 - Warning: Corrosive. Health hazard. Oxidizing Agent
7.5 n-Hexane - Conforming to Specification D1836 or n-heptane conforming to material used in Test Methods D611, D381, D2699, and D2700 or petroleum spirit 60/80 conforming to IP Appendix B Specification, or equivalent. (see Note 1)
7.6 Phosphate Buffer Solution (pH 7) - Dissolve 1.15 g of potassium monohydrogen phosphate, anhydrous (K2HPO4) and 0.47 g of potassium dihydrogen phosphate, anhydrous (KH2PO4) in 100 mL of water. Larger volumes of the phosphate buffer solution may be prepared provided the concentration of K2HPO4 and KH2PO4 in the water solution is equivalent to that described above. As an alternative, the laboratory may use a commercially prepared solution.
