Healthcare, Biotech Firms and Research Facilities Turn to PurityPlus® for More Than Specialty Gases


In certain Fresno industries, PurityPlus® cryogenic refrigerators and storage dewars are as much in demand from Fresno Oxygen & Welding Supplies/Barnes Welding Supply as the specialty gases we produce.

As you can imagine, the life sciences rely to a large extent on this type of equipment. They use it most often to protect precious biological materials – human tissue, stem cells, bone marrow, cord blood, and the like. Medical and pharmaceutical enterprises especially use our cryogenic refrigerators and dewars for all manner of medical research, including the creation of vaccines. Then, as you’d expect, there are the blood banks, tissue banks, hospitals, and clinics for whom such apparatus is indispensable. Other PurityPlus® cryogenic refrigerator and dewar customers include government and university research facilities as well as various biorepositories that specialize in the collection, processing, inventorying, and distribution of biological specimens.

PurityPlus® cryogenic refrigerators are offered in numerous models and sizes – the better to facilitate long-term storage of liquid nitrogen and other cryogenic materials at the most beneficial temperature. The availability of various hold times, work times, evaporation rates, and other attributes makes it clear there’s a refrigerator for almost any cryogenic requirement.

Our dewars are built with vacuum-layered walls that provide outstanding thermal insulation and thus strikingly cut the rate at which their contents – either liquid nitrogen or other cryogenic materials – are lost to evaporation.

Rounding out our line of cryogenic apparatuses, we also offer Fresno life science industries …

  • a top-quality whisper valve for cryogenic refrigerators and dewars. This instrument installs easily on the vent valve of these vessels to reduce – almost without sound – the pressure of the compressed gases inside. Result? Less container damage and fewer lab disturbances.
  • a number of gas cylinder manifold options including those with automatic changeover. These systems allow a continuous flow of gas while automatically changing cylinder or bank priority from the starting source to an additional supply with no fluctuation in pressure.

As necessary as our cryogenic equipment is to healthcare, medicine, and biotechnology, we supply other Fresno-area industries with these products as well. By way of illustration, the fabrication of high-end metal products typically entails the use of cryogenics. Utilities have a need for cryogenics too – to cool wires and facilitate the smooth transmission of electric power. In the food industry, cryogenic flash-freezing helps protect food nutrients and texture over a longer shelf life. And cryogenic freezing is imperative in the development of superconductors for, say, MRI machines or use in quantum computing.

No matter your field or application, get the preferred cryogenic equipment and gases for it from Fresno Oxygen & Welding Supplies/Barnes Welding Supply, your Fresno PurityPlus® Partner.