ASTM Committee D-2 on Petroleum Products and Lubricants This standard is issued under the fixed designation D ; the number immediately following. 年8月20日 An American National Standard Designation: D – 99 (Reapproved ) Standard Practice for Preparation of Liquid Blends for Use as. ASTM-D Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards – analytical standards; liquid blends;; ICS Number Code
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An American National Standard Designation: A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. Summary of Practice 1. When volatility is a consideration, the components 1. Mass weight percent composition that will form a solution when blended with liquids. Volume percent composition can be calcu- 1. Atsm butane content of the blend is not to exceed 5.
ASTM D – Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
Vapor reduces oxygen available for breathing. Vials of other capacity may be substituted, blended. When blending light sensitive components, use 1. It is the 5. These caps are especially valuable for 2. Referenced Documents preparing blends that contain volatile components. Fischer Reagent Titration Method 5. Products and Lubricants and is the direct responsibility of Subcommittee D Reagents and Materials Current edition approved May 1, Originally approved in Last previous edition approved in as D — After weighing, the vial and contents are each compound by the same technique for which the blend is re-chilled before the vial is opened to permit addition of the intended or by another suitable technique.
Check for other next component. Water cannot be deter- 7. If any of the impurities found are other concentrations. For example, if a blend make appropriate corrections. Make certain that between all weighings the unmixed liquid does not contact the container cap, which could 7.
ASTM D – 17 Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
After both components d307 been closure is obtained. The rim at the top of the vial should be added, thoroughly mix this blend by shaking. Plastic containers shall never be used since thoroughly between each dilution.
Poly- is calculated from the recorded weights. Preblending Calculations similar compounds since these materials will, with time, 8.
Remove component required to achieve these levels. Calculate these masses as follows: Liquids may be added by either pipet or N medicine dropper while solids are usually added with a small where: Place the cap on the vial and reweigh to the nearest 0.
Calculations shake the vial to asstm the solution. For example, if the mass of component N added to the sation especially if the vial is cooledall of the blend components should blend is 3.
When this technique components O and P, respectively. The vial and contents then are chilled component as follows: Keywords determined at the same temperature.
ASTM D4307 – 17
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