True. I don't know how much that is. But liquid helium shouldn't be "medical grade" really. It's just a coolant for the superconducting magnets, same as any industrial use.
In my experience the only thing that makes a material professional grade is a paper trail. If something goes wrong and you get sued you want to be able to absolutely prove you didn't cheap out on any of the materials. It adds a lot of cost to keep batches separate and making sure none of the paperwork gets mixed up. Especially if multiple companies are involved in creating and distributing the material. I work in an ISO compliant shop and we have a lot of folders moving around with different orders, it can be a nightmare keeping everything straight when things are busy.
"Medical grade" is less pure than what MRIs (research grade).
Medical grade or grade-4.0 is 99% pure and is meant for inhalation. "Research grade" or grade-6 is 99.9999% pure.
True. I don't know how much that is. But liquid helium shouldn't be "medical grade" really. It's just a coolant for the superconducting magnets, same as any industrial use.
In my experience the only thing that makes a material professional grade is a paper trail. If something goes wrong and you get sued you want to be able to absolutely prove you didn't cheap out on any of the materials. It adds a lot of cost to keep batches separate and making sure none of the paperwork gets mixed up. Especially if multiple companies are involved in creating and distributing the material. I work in an ISO compliant shop and we have a lot of folders moving around with different orders, it can be a nightmare keeping everything straight when things are busy.
"Medical grade" is less pure than what MRIs (research grade).
Medical grade or grade-4.0 is 99% pure and is meant for inhalation. "Research grade" or grade-6 is 99.9999% pure.
https://www.westairgases.com/blog/exploring-the-most-essential-and-underappreciated-uses-for-helium
I presume that it has to be certified and probably heavily filtered. It's not going to be the same as what goes into party balloons.
Liquid helium is -269 °C. There is no risk of confusing it with what's in balloons.
And its a medical setting which means that the products you use will be certified and calibrated in just the right way.