ASTM G144 Standard Test Method for Determination of Residual Contamination of Materials and Components by Total Carbon Analysis Using a High Temperature Combustion Analyzer

ASTM G144  Standard Test Method for Determination of Residual Contamination of Materials and Components by Total Carbon Analysis Using a High Temperature Combustion Analyzer
ASTM G144用高温燃烧分析仪全碳分析法测定材料成分中残余物污染的标准试验方法
It is expected that this test method will be suitable for the quantitative determination of total carbon in water that has been used to clean, extract, or sample parts, components, materials, or systems requiring a high degree of cleanliness, that is, oxygen systems.
1. Scope
1.1 This test method covers the determination of residual contamination in an aqueous sample by the use of a total carbon ( TC) analyzer. When used in conjunction with Practice G 131 and G 136, this procedure may be used to determine the cleanliness of systems, components, and materials requiring a high level of cleanliness, such as oxygen systems. This procedure is applicable for aqueous-based cleaning and sampling methods only.
1.2 This test method is not suitable for the evaluation of particulate contamination, or contaminants that are not soluble in or that do not form an emulsion with water.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately)
ASTM Standards
D1193 Specification for Reagent Water
D2579 Test Method for Total Organic Carbon in Water
F331 Test Method for Nonvolatile Residue of Solvent Extract from Aerospace Components (Using Flash Evaporator)
G121 Practice for Preparation of Contaminated Test Coupons for the Evaluation of Cleaning Agents
G131 Practice for Cleaning of Materials and Components by Ultrasonic Techniques
G136 Practice for Determination of Soluble Residual Contaminants in Materials by Ultrasonic Extraction
Index Terms
cleaning; contaminant; contamination; nonvolatile residue; NVR; oxygen systems; sensitivity factor; TC; total carbon analysis;