Astm D95 — Pdf

A specialized glass container (often a Dean-Stark trap) that allows for the measurement of the volume of water collected. Heater: Provides controlled heat to maintain a steady boil.

If the cooling water is too warm, water vapor escapes out of the top of the apparatus, resulting in underestimated water content.

The sample is heated under reflux with a water-immiscible solvent (such as xylene or petroleum naphtha).

Allow the trap to cool to room temperature. If any water droplets adhere to the sides of the glass trap, nudge them down into the water layer using a copper wire or glass rod. Read the volume of water directly from the graduated markings. Calculate the water content using the following formula: Astm D95 Pdf

An electric mantle or gas burner capable of precise temperature control.

Read the volume of the accumulated water layer at the bottom of the graduated trap directly from the meniscus. 📊 Calculating the Results

Look for the current active version designation (e.g., ASTM D95-13R18, where the number after the hyphen indicates the year of original adoption or latest revision). A specialized glass container (often a Dean-Stark trap)

ASTM D95 is the standard test method for determining water content in petroleum products and bituminous materials using Dean-Stark distillation to measure water concentrations up to 25%. This technique is crucial for quality control in the oil industry, preventing corrosion and ensuring accurate product valuation. For detailed technical specifications, access the ASTM D95 standard from ASTM International 分析测试百科网 ASTM D95-13(2018).pdf

Several platforms host user-uploaded PDFs of ASTM D95, including , Scribd , and jishulink.com . These typically feature older versions (D95-05, D95-99, D95-99e1) and should be used only for reference, not for regulatory compliance.

"The method is not particularly safe, takes more time than the Karl Fischer method, is more expensive to perform, and is not as accurate. Consequently, if you are using a penetrant product that contains an azeotrope, the ASTM D95 method will report that the product is 100% water, something that will immediately be obvious as false." [11†L8-L15] The sample is heated under reflux with a

A sample is heated under reflux with a water-immiscible solvent (like xylene or toluene).

ASTM D95 outlines strict precision criteria to validate the test run:

The combined solvent and water vapors travel upward into a reflux condenser, where they liquefy.

If you want to look over the specific mechanical drawings of the traps, let me know:

[20†L80-L89]