Test Method: D6371
Baths for manual cold filter plugging point (CFPP) testing
• Conform to D6371 (also ASTM D97, D2500, and IP309)
• Temperature Stability of 0.5º C
• Dry Bath not requiring Liquid Bath Medium
• Lowest Temperature of -35º C or -70º C
• Achieves Test Bath Temerature in 2 Minutes
• Digital Control to 0.1º C Resolution
Click for the Automated D6371 Apparatus
Click for Automated Vacuum and Pressure Controller
Click for liquid baths

For manual CFPP testing, Lawler uniquely offers a dry bath we call Direct Refrigeration, or DR technology. The metal test jacket is cooled directly by the refrigerant, thus replacing the middle step of first cooling the flammable alcohol bath medium used in liquid baths. We offer them in one or two sample models with choice for lowest temperature of -34°C and -70°C.

In cases when there are large numbers of samples to run then a liquid baths can have higher sample capacity. Please review our available liquid baths suitable for CFPP. Note: CFPP-2 kit would be required to convert for each liquid bath port from cloud/pour to CFPP” 

Model DR-2L has two independently controlled test positions fully conforming to the dimensional specifications of the method. Each position accepts one CFPP test assembly (or a pour/cloud point test tube). Each bath temperature is controlled by an digital indicating PID controller with 0.1°C resolution. Bath stability is better than ±0.5°C specified by the test method. The test cup is cooled by direct refrigeration thus eliminating the need for a liquid bath medium.

The bath achieves test temperature quickly (2 minutes) from ambient. The bath may be also rapidly changed to the next lowest temperature of -51°C (and -69°C) if so required. Each bath temperature may be set independently of the other.

Model DR-2H is identical to Model CF-2L with the exception that the lowest bath temperature is -35°C. This is temperature is sufficient to meet the test requirements for the vast majority of commercial fuels.

Model DR-4H is identical to Model CF-2H with the exception of having four test positions.

Model DR-1L is identical to Model CF-2L with the exception of only having one test position.

Model DR-1H is identical to Model CF-2H with the exception that of only having one test position.

 Available Models
Model
No.
Test
Positions
Lowest
Temperature
Cabinet
Dimensions
Ship Weight
lbs/ cu.ft
DR-2L
2
-70ºC
28x28x15
(70x70x38)
220/15
DR-2H
2
-34ºC
18x22x15
(45x55x38
180/12
DR-1L
1
-70ºC
28x27x15
(70x70x38)
220/15
DR-1H
1
-34ºC
18x22x15
(45x55x38
180/12


Accessories
Model No.
Description
DR-10
Test assembly including 1 brass filter assembly (CF-11), 1 pipette (CF-12), 1 test jar (CF-13) test jar with fill line
DR-11
Brass filter assembly (equivilant to ASTM D6371 Figure 7+ 8)
DR-11A
Extra screen for CF-11
DR-11B
Replacement  “O” rings for filter screen (large)
DR-12
Pipette (as per 6.1.8.1)
DR-12A
 Replacement  “O” rings for pipette (small)
DR-13
Test jar (as per 6.1.2)
DR-14H
High range ASTM 5C thermometer +50°C to -38°C
DR-14L
Low range ASTM 6C thermometer +20°C to -80°C
DR-14B
Cooling bath ASTM 6C thermometer +20°C to -80°C
DR-15
Teflon stopper  (as per 6.1.7)
DR-16

Vacuum control jars assembly with ball float flow meter and control valve (as per 6.1.13)
DR-17
Vacuum pump (as per 6.1.12) (115 volts)
DR-18
 Spacer basket (as per 6.1.5)
DR-19
 Brass jacket   (as per 6.1.3)
DR-20
 Support ring   (as per 6.1.6)
DR-21
 Glass stopcock (as per 6.1.11)
DR-22
 Replacement brass filter holder

Specifications are subject to change without notice.

Specifications subject to change without notice. Lawler Manufacturing Corporation © 2011