Online News Trends and Latest Information

Archive for the ‘scientific equipment repair’ tag

Cryostat Device Repair by NLRA

without comments

A cryostat device has numerous uses and benefits of the science, engineering, biological and medical communities. From the Greek kryos (cold) and statos (standing stationary), the cryostat does exactly what it sounds like – maintains temperatures at a cryogenic level (i.e. below -150 degrees Celsius). They allow for adequate tissue preparation that is essential for stereological and immunohistochemical observation. These devices are specifically used to preserve samples within a liquid helium bath or another such refrigeration method. They are valuable and expensive machines, needing specialized knowledge to build, operate and repair. DL Repair is a certified representative of NLRA.

Use 1: Magnetic Resonance Imaging and Magnet Research

Cryostats are common in MRI or Magnetic Resonance Imaging machines. They hold a liquid cryogen like helium in such a way the liquid does not evaporate. The cryostat contains a superconducting magnet that allows the MRI to function, and the purpose of the liquid helium bath is to keep the magnet’s bobbin made of wire from losing its superconductivity. This way, the bobbin wire can maintain very large currents and produce low power input.
If the wire loses superconductivity, the liquid surrounding it will evaporate. A mechanical refrigerator will turn the gas back into liquid to maintain the necessary conditions to keep the MRI going.

Use 2: Biological Microtome Type

Histological slides are often cut by an instrument inside the cryostat called a microtome; this process is referred to as frozen section histology. It slices the slides like a deli slicer slices meat in a deli. You can alter the temperature in the cryostat to between -20 and -30 degrees Celsius depending on what tissue is being cut at that time. The cryostat is not only used to slice the tissue but mounts and reads the slide as well. This process takes no longer than 20 minutes and allows for speedier diagnoses than if it were done by a technician alone.

Use 3: Cryonics Patients

There is currently much research and investigation done in using cryostats to preserve dead bodies for a time when they may be revived. They are kept in liquid nitrogen baths at -196 degrees Celcius and so far, it has not been proven that a cryogenically preserved body can be brought back to life.
Cryogenics using cryostats is not perfect – is still being studied and improved upon. At times, tissue samples can shrink, nuclei/nucleoli can be damaged or lost if the surfaces of the tissue are not protected. More notably, cryostats can be dangerous to anyone attempting to fix one. If a machine malfunctions, it is possible for a researcher under pressure to deliver results to attempt to repair the machine alone. The cryostat blade is sharp enough to cut tissue samples into transparent sheets and can easily injure anyone trying to adjust it.
For this purpose, it’s crucial to have a designated company on hand to repair your cryostat. The National Laboratory Repair Association services Cryostats expertly and professionally, improving the service life of your equipment. The NLRA has an extensive history of quality service and support, specifically servicing laboratory equipment like cryostats.