Astm D95 Pdf 💯

Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation

ASTM D95 is the globally recognized standard for determining the water content in petroleum products, tars, and bituminous materials. Specifically known as the , it is a foundational protocol for oil refining, trade, and quality control. Overview of ASTM D95

Preparation

: A sample is mixed with a water-immiscible solvent, typically xylene or toluene . Astm D95 Pdf

• Karl Fischer titration (ASTM D1744 or similar) — more sensitive and better for low water concentrations and samples where distillation isn’t appropriate.
• Coulometric Karl Fischer for trace water.
• Other instrument-based methods (e.g., near-infrared) for rapid screening, but these require calibration against reference methods like D95 or Karl Fischer.

6. Recommendation

water-insoluble solvent

The sample is heated under reflux in a (typically xylene or toluene). Water distilled from the sample condenses and collects in a graduated receiving tube (Dean & Stark trap). The volume of water is directly read at room temperature. Standard Test Method for Water in Petroleum Products

ASTM D95 vs. Other Water Test Methods

• Distillation flask (borosilicate glass, 500 mL or 1000 mL)
• Condenser (Liebig type)
• Receiver (calibrated glass trap, graduated to 0.1 mL up to 10 mL, then 0.2 mL)
• Heating mantle or gas burner (controlled to avoid bumping)

D95 Standard Test Method for Water in Petroleum Products ... - ASTM Karl Fischer titration (ASTM D1744 or similar) —