K39180 Demulsibility Characteristics Bath


Test Method
Tests the ability of medium to high viscosity oils to separate from water when water contamination and turbulence are encountered. The sample is stirred together with distilled water for 5 minutes at constant temperature. After a specified settling period, the degree of separation is measured by volume and the percentage of water in oil is determined. For lighter oils and synthetic fluids, the ASTM D1401 Water Separability Test is used.

Features and Benefits
• Conforms to the specifications of ASTM D2711 and DIN 51353

• Variable 150-8000rpm stirrer speed

• Choice of digital or analog bath models


K39180 Demulsibility Characteristics Bath
Stirrer – Complete stirrer assembly per Fig. 1 and 2 of ASTM D2711, including high speed 1/15hp 8000rpm drive motor, stainless steel propeller shaft, top, center and bottom bearings, and steel motor housing with positioning plate. Entire assembly mounts vertically in K39110/K39119 Constant Temperature Bath. Built-in tachometer disc allows for precise stirrer speed adjustment. (Order tachometer separately).

Constant Temperature Baths – Standard model holds two K39100 Stirrers and two K39120 Separatory Funnels in proper alignment for demulsibility characteristics testing. Stirrers mount securely on a stainless steel support plate having brackets for testing and drainage positions. Separate motor speed controls (150-8000rpm range) are provided for each stirrer. All wetted parts are constructed of stainless steel. Order thermometer separately.

Visibility Baths – Visibility model has microprocessor digital temperature control with dual LED displays for setpoint and actual temperatures and an illuminated bath interior with window for viewing sample cylinders. A separate digital LED speed control is provided for each stirrer.

Conforms to the specifications of: ASTM D2711 and DIN 51353

Capacity: Two (2) sample-water mixtures

Maximum Temperature: 212F (100C)

Temperature Control: Electric solid state or microprocessor digital control with LED display

Bath Medium:
10.7 gal (40.4L) water for K39110/K39119
9 gal (38.5L) water for K39180/K39189

Electrical Requirements
115V 50/60Hz
220-240V 50/60Hz

Dimensions dia.xh,in.(cm)
14.75x35.5 (37x90)
Net Weight: 72 lbs (32.6kg)

Shipping Information
Shipping Weight 133 lbs (60.3kg)
Dimensions: 25.4 Cu. ft.

Ordering Information



Product Description

Electrical Requirements


Demulsibility Characteristics Bath

115V, 50/60Hz


Demulsibility Characteristics Bath

220-240V, 50/60Hz


Stirrer *

115V, 50/60Hz

*Suitable for use with K39110 & K39119


Demulsibility Characteristics Visibility Bath

115V, 50/60Hz


Demulsibility Characteristics Visibility Bath

220/240V, 50/60Hz


Stirrer **

115V, 50/60Hz

**Suitable for use with K39180 & K39189




Product Description


Separatory Funnel
With 0-500mL graduations. Meets ASTM specifications.


Solvent Tank
Immerses stirrer assembly for convenient cleaning after testing.


Forced Warm Air Dryer, 115V 50/60Hz
High output 1400W dryer and brass cylinder mounted on a sturdy base. Rapidly dries stirrer assembly after cleaning.


Forced Warm Air Dryer, 220-240V 50/60Hz


Sampling Gauge and Centering Device
Per Fig. X1 of ASTM D2711. Aids in accurately obtaining 50mL samples from separatory funnels for the 'percent water in oil' determination.


Digital Tachometer
Hand held non-contact LCD tachometer takes measurements up to 3 ft. away with +1 rpm accuracy. Supplied with four 1.5V AA batteries.


ASTM 9F Thermometer
Range: 20 to 230F


ASTM 9C Thermometer
Range: -5 to +110C


Conditioning Bath, 115V 50/60Hz
Constant temperature water bath holds 8 separatory funnels in two removable 4-unit racks for conditioning prior to testing in Demulsibility Apparatus. Includes microprocessor digital temperature control, automatic water level control, and gabled cover.


Conditioning Bath, 220-240V, 50/60Hz


When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.