Demulsibility Bath for Oil Fuel and Petroleum Testing Instruments

The Demulsibility Tester evaluates the ability of medium- to high-viscosity oils to separate from water under conditions involving water contamination and turbulence. The test involves stirring the oil sample with distilled water for five minutes at a controlled temperature. After a specified settling period, the degree of separation is measured by volume and the percentage of water remaining in the oil is determined. For lighter oils and synthetic fluids, the ASTM D1401 water separability test is used. The system features a constant-temperature bath that accommodates two stirrers and two separatory funnels in proper alignment. Each stirrer has an independent motor speed control, while the digital model provides microprocessor temperature control with dual LED displays for setpoint and actual temperatures. The illuminated bath interior and viewing window allow convenient observation of the samples. The stirrer assembly includes a variable-speed motor, stainless steel propeller shaft, bearings, and a built-in tachometer disc for precise speed adjustment. Manufactured by Atico Export with a focus on precision, durability, and reliable performance for lubricant demulsibility testing applications.

Testing Standard:

• ASTM D2711

Testing Principle:

• Stirring time: 5 minutes
• Sample mixed with distilled water at a controlled temperature
• Separation measured by volume after a specified settling period
• Percentage of water remaining in oil determined

Bath Capacity:

• Accommodates two stirrers and two separatory funnels
• Bath medium: Water
• Bath medium capacity: 9 gallons (38.5 L)

Temperature Specifications:

• Maximum temperature: 212°F (100°C)
• Microprocessor digital temperature control
• Dual LED displays for setpoint and actual temperature

Stirrer Specifications:

• Variable-speed drive motor
• Independent motor speed controls
• Digital LED speed control
• Stainless steel propeller shaft
• Top, center, and bottom bearings
• Built-in tachometer disc for precise speed adjustment
• Stainless steel support plate with testing and drainage positions

Construction and Features:

• Stainless steel wetted components
• Illuminated bath interior
• Viewing window for sample observation
• Choice of digital or analog bath models

Dimensions (W × D × H):

• 15.25 × 15 × 37 inches (39 × 38 × 94 cm)

Net Weight:

• 72 lbs (32.6 kg)