J.U.M. Engineering

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By following our rigorous testing and service protocols, the new team of very experienced factory technicians will continue to provide the excellent service you have come to expect from us over the past years. Because of the existing knowledge base and experience of personnel involved in this transition, we are hopeful that any inconvenience to our customers will be minimized. Thank you for your continued support of J.U.M.

A sample pressure regulator which does not come in contact with the sample itself creates a constant backpressure towards the sample capillary. This capillary provides a steady flow of sample to the detector. This method of constant pressure regulation of hot sample gases is being successfully used by J.U.M. Engineering for over 24 years. One part of the airflow is diverted after the pressure regulator and routed through an adsorption unit where the air is being purified to then be used as burner air for the detector.

The only way to make sure is the use of the highest quality fuel gas, the highest quality zero gas, the most accurate span gas and enough time to let an analyzer completely drift out in a low range before calibration. A good FID analyzer practically is nearly drift free. What you see drifting in a THC analyzer is hydrocarbons building up by condensing in the system, forming a hang up (also called a memory effect). Again: Clean FID analyzers are nearly drift free.

Design and development of special test equipment including but not limited to handling and packaging machinery. We are currently expanding our facilities to provide services to support systems- and hardware-manufacturing companies who do not have their own clean room facilities available.

To meet legal requirements for aerosol spray cans containing propellant gases like HFA´s, various hydrocarbon propellants, or CFC´s (pharmaceutical only) must be tested for leaks prior to distribution. Basically, most regulations require that cans be heated to 50°C (122°F) and then examined for leakage. Most current regulations specify the cans be submerged in a hot water bath to be heated and examined for leakage by observing the escaping gas bubbles. The detection of small leaks in the conventional heated water bath is expensive, slow, inaccurate, and often impossible.

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