Dropping Funnel Graduated With Rotaflow Stopcok

ASTM D96 Centrifuge Tubes (Cylindrical Type) are highly specialized, heavy-duty laboratory glassware pieces engineered primarily for the determination of water and sediment in crude mineral oils, petroleum products, and fuel oils. Fabricated from premium-grade borosilicate glass, these tubes are built to withstand high centrifugal forces and rigorous thermal loads inside industrial laboratory centrifuges.

Designed in strict compliance with the ASTM D96 testing standard, these cylindrical tubes feature a uniform diameter with a precisely formed bottom profile (typically conic or custom rounded based on exact test methods) to facilitate the clear separation and accurate measurement of trace sediments. The heavy-wall glass construction ensures excellent chemical resistance against aggressive petroleum solvents, toluene, and oil-soluble chemicals used during extraction procedures.

Key Features

• Manufactured from high-purity borosilicate 3.3 glass for maximum chemical resistance and thermal stability
  
• Strict adherence to uniform wall thickness to ensure balanced rotation and safe operation at high RPMs
  
• Precision-graduated with high-contrast, durable fired-on white or amber enamel lines for precise, error-free sediment readings
  
• Chemically inert surface prevents oil or residue adhesion, ensuring complete volumetric recovery and easy cleaning
  
• Available in standard capacities (such as 100ml) with options for plain, beaded, or screw-thread rims to suit various centrifuge rotor buckets
• International Standards
• Our petroleum testing centrifuge tubes are manufactured in exact accordance with global testing methodologies and material specifications, ensuring seamless verification for international export and bidding:

• ASTM D96 – Standard Test Methods for Water and Sediment in Crude Oil by Centrifuge Method
  
• ASTM E438 – Standard Specification for Glasses in Laboratory Apparatus Manufacturing
  
• ISO 3734 / IP 75 – Petroleum Products Compliance for Water and Sediment Determination
• Custom graduation ranges, specialized validation certifications, and alternative rim configurations (e.g., ground glass joints or plastic screw caps) can be custom manufactured to meet specific refinery or third-party inspection lab parameters.

Applications

Widely utilized across petroleum refineries, petrochemical R&D centers, fuel testing laboratories, offshore oil platforms, marine cargo inspection agencies, and industrial quality control departments for routine BS&W (Basic Sediment and Water) testing.

Why Choose Our Products

• Export-quality, high-stress-tested glassware featuring meticulously annealed matrices to eliminate structural micro-strains
  
• Highly reliable, certified calibrations ensuring compliance with stringent ASTM accuracy limits for precision auditing
  
• Robust heavy-wall engineering designed to minimize mechanical failure or cracking during intensive high-speed spinning
  
• Trusted manufacturing partner for global laboratory suppliers, refinery contract distributors, and B2B oil testing equipment vendors