MCF-series Multi-place cold finger


The cold finger apparatus provides a fast and reliable method of quantifying the efficiency of wax deposition inhibitors. A hydrocarbon sample is stored in multiple cells; each having a different inhibitor. The cells are placed in an isothermal bath at a production-representative temperature. Hollow cylindrical rods, referred to as “fingers”, submerged in the samples are cooled by an internally circulating refrigerant and the finger temperature is monitored by an internal temperature probe. Wax progressively deposits itself on the fingers and the latter are removed and weighed at the end of the experiment. The relative performances of the different inhibitors can then be deduced from the deposition amounts. Furthermore, the wax can be collected and its composition analyzed. The MCF series can be configured with 6, 12 or 18 sample bottles.


Number of sample bottles: MCF 6:     6 sample bottles
                                                MCF 12: 12 sample bottles
                                                MCF 18: 18 sample bottles
Pressure: atmospheric
Temperature of oil: ambient  to 100°C 
Temperature of cold finger: -10°C to 80°C 
Temperature difference between cold finger and oil: up to 20°C
Temperature difference between two cold fingers: up to 20°C
Stirrer speed: 100 to 2,000 rpm
Sample volume required: 100ml
Temperature control: 1 temperature sensor per cold finger
Power supply: 220 VAC, 50 Hz or 220VAC, 60 Hz


* Fully automated
* Parallel measurements
* Temperature ramp and variable stirring speed available
* Individual temperature control on each cold finger