Significance and Use 5.1 ASTM standard gas chromatographic methods for the analysis of petroleum products require calibration of the gas chromatographic system by preparation and analysis of specified reference mixtures. Frequently, minimal information is given in these methods on the practice of calculating calibration or response factors. Test Methods D2268, D2427, D2804, D2998, D3329, D3362, D3465, D3545, and D3695 are examples. The present practice helps to fill this void by providing a detailed reference procedure for calculating response factors, as exemplified by analysis of a standard blend of C6 to C11 n-paraffins using n-C12 as the diluent. 5.2 In practice, response factors are used to correct peak areas to a common base prior to final calculation of the sample composition. The response factors calculated in this practice are “multipliers” and prior to final calculation of the results the area obtained for each compound in the sample should be multiplied by the response factor determined for that compound. 5.3 It has been determined that values for response factors will vary with individual installations. This may be caused by variations in instrument design, columns, and experimental techniques. It is necessary that chromatographs be individually calibrated to obtain the most accurate data.Scope 1.1 This practice covers a procedure for calculating gas chromatographic response factors. It is applicable to chromatographic data obtained from a gaseous mixture or from any mixture of compounds that is normally liquid at room temperature and pressure or solids, or both, that will form a solution with liquids. It is not intended to be applied to those compounds that react in the chromatograph or are not quantitatively eluted. Normal C6 through C11 paraffins have been chosen as model compounds for demonstration purposes. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

American National Standards Institute Inc.

Go to ASTM D4626 at ASTM.org

Add your thoughts about the standard.

1375 - Demolition Materials (549) 1377 - Cartridge and Propellant Actuated Devices and Components (524) 4720 - Hose and Flexible Tubing (552) 4730 - Hose, Pipe, Tube, Lubrication, and Railing Fittings (1823) 5120 - Hand Tools, Nonedged, Nonpowered (1124) 5305 - Screws (781) 5306 - Bolts (996) 5310 - Nuts and Washers (864) 5330 - Packing and Gasket Materials (583) 5340 - Hardware, Commercial (953) 5905 - Resistor (753) 5910 - Capacitors (783) 5930 - Switches (1012) 5935 - Connectors, Electrical (4357) 5940 - Lugs, Terminals, and Terminal Strips (564) 5945 - Relays and Solenoids (733) 5950 - Coils and Transformers (856) 5960 - Electron Tubes and Associated Hardware (1630) 5961 - Semiconductor Devices and Associated Hardware (707) 6145 - Wire and Cable, Electrical (1629) 6240 - Electric Lamps (662) 6505 - Drugs and Biologicals (1343) 6515 - Medical and Surgical Instruments, Equipment, and Supplies (1907) 6520 - Dental Instruments, Equipment, and Supplies (790) 6530 - Hospital Furniture, Equipment, Utensils, and Supplies (745) 6610 - Flight Instruments (540) 6625 - Electrical and Electronic Properties Measuring and Testing Instruments (1241) 6640 - Laboratory Equipment and Supplies (1187) 6810 - Chemicals (1114) 8010 - Paints, Dopes, Varnishes, and Related Products (2046) 8030 - Preservative and Sealing Compounds (554) 8140 - Ammunition and Nuclear Ordnance Boxes, Packages and Special Containers (797) 8305 - Textile Fabrics (910) 8415 - Clothing, Special Purpose (660) 8455 - Badges and Insignia (3093) 8915 - Fruits and Vegetables (531) 9330 - Plastics Fabricated Materials (759) FACR (1647) ISDA (1776) ISDD (786) ISDF (1827) ISDN (581) MISC (1045) PACK (539) SESS (581)
Aerospace Material (225) Aircraft Air Conditioning, Heating, and Pressurizing Equipment (334) Aircraft Hydraulic, Vacuum, and De-icing System Components (263) Ammunition, 75mm through 125mm (192) Ammunition, over 30mm up to 75mm (208) Ammunition, through 30mm (349) Analytical Chemistry (180) Bombs (192) Building (414) Bulk Explosives (261) Cartridge and Propellant Actuated Devices and Components (524) Consumer Product Evaluation (267) Copper (192) Demolition Materials (549) Electrical and Magnetic Conductor (162) Electronics (153) Environmental Toxicology (187) Fire Control Computing Sights and Devices (338) Fire Control Radar Equipment, except Airborne (197) Fuzes and Primers (454) Geotechnical Engineering (217) GUN (640) Land Mines (276) Medical Device and Implant (427) Military Chemical Agents (156) Miscellaneous Aircraft Accessories and Components (231) Miscellaneous Fire Control Equipment (216) Nondestructive Testing (246) Nonferrous Metal and Nonferrous Alloy (367) Nuclear Technology (274) Optical Sighting and Ranging Equipment (451) Paint and Related Coating (456) Parachutes; Aerial Pick Up, Delivery, Recovery Systems; and Cargo Tie Down Equipment (324) Petroleum (378) Plastic Pipe (248) Pyrotechnics (175) Road and Paving (177) Rockets, Rocket Ammunition and Rocket Components (368) Rubber (166) Security System Pedestrian and Walkway Safety (157) Specialized Test and Handling Equipment, Nuclear Ordnance (150) Sports and Recreation (316) Steel (908) Torpedos and Components, Inert (258) (621)