MIL-PRF-87896A
w/AMENDMENT 1
CONTENTS
PARAGRAPH PAGE
1 SCOPE ..................................................................................................................................... 1
1.1 Scope ........................................................................................................................................ 1
1.2 Classification............................................................................................................................. 1
2 APPLICABLE DOCUMENTS ................................................................................................... 1
2.1 General ..................................................................................................................................... 1
2.2 Government documents ........................................................................................................... 1
2.2.1 Specifications, standards, and handbooks ............................................................................... 1
2.3 Non-Government publications .................................................................................................. 1
2.4 Order of precedence ................................................................................................................. 2
3 REQUIREMENTS ..................................................................................................................... 2
3.1 Chemical composition and physical properties ........................................................................ 2
3.2 Limiting values .......................................................................................................................... 2
3.3 Filled containers ....................................................................................................................... 2
3.3.1 Cylinders ................................................................................................................................... 2
3.3.2 Filling pressure ......................................................................................................................... 2
3.3.3 Leakage .................................................................................................................................... 2
3.3.4 Identification tag ....................................................................................................................... 2
4 VERIFICATION ........................................................................................................................ 3
4.1 Classification of inspections ..................................................................................................... 3
4.2 Conformance inspection ........................................................................................................... 3
4.2.1 Individual tests .......................................................................................................................... 3
4.2.1.1 Filling pressure ......................................................................................................................... 3
4.2.1.2 Leakage .................................................................................................................................... 3
4.2.2 Sampling for tests ..................................................................................................................... 4
4.3 Sampling plan ........................................................................................................................... 4
4.3.1 Lot ............................................................................................................................................. 4
4.3.1.1 Sample size .............................................................................................................................. 4
4.3.1.2 Sampling method ...................................................................................................................... 4
4.4 Rejection ................................................................................................................................... 4
4.5 Test Methods ............................................................................................................................ 4
4.5.1 Purity ......................................................................................................................................... 5
4.5.2 Tetrafluoromethane, carbon dioxide, nitrous oxide, and sulfur hexafluoride ........................... 5
4.5.2.1 Instrument parameters ............................................................................................................. 5
4.5.2.2 Calibration ................................................................................................................................. 5
4.5.2.3 Procedure ................................................................................................................................. 5
4.5.2.4 Calculation ................................................................................................................................ 6
4.5.3 Oxygen + argon, nitrogen, and carbon monoxide .................................................................... 6
4.5.3.1 Instrument parameters ............................................................................................................. 6
4.5.3.2 Calibration ................................................................................................................................. 6
4.5.3.3 Procedure ................................................................................................................................. 6
4.5.3.4 Calculation ................................................................................................................................ 6
4.5.4 Total reactive fluoride as HF ..................................................................................................... 7
4.5.4.1 Fluoride ion selective electrode ................................................................................................ 7
4.5.4.1.1 Buffer solution ........................................................................................................................... 7
4.5.4.1.2 Calibration standard ................................................................................................................. 7
4.5.4.1.3 Procedure ................................................................................................................................. 7
4.5.4.1.3.1 Calibration curve ....................................................................................................................... 7
4.5.4.1.3.2 Sample preparation .................................................................................................................. 7
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