Thread: Liquid nitrogen purity for biostorage

Hi,

I’m researching liquid nitrogen producing systems to make liquid nitrogen to fill
LN2 dewers to storage lab samples in the nitrogen vapour.
A lot of the systems produce different ranges of purity (99% - 99.9999%).
What purity is acceptable or does it really? Could I use purities as low as 98%.

Thanks,
Phil

Since I assume your samples will be in sealed containers , LN2 purity is irrelevant
You are making yuor own???

The samples will be in sealed containers/blood bags.
We plan to get a 20l/h system and run it 5 nights a week to get night-time savings :P