Nitrogen 2.8 vs Nitrogen 5.0 gastank

[stupidhuman]

I'm about to buy a tank soon. I believe Nitrogen 2.8 (99,8%) vs Nitrogen 5.0 (99,999%) isn't that important right ?
I'll try to buy a Nitrogen 5.0 if they let me.

I ask because just in case they ask me what I need it for. I've read it's for medical stuff / lab stuff.

So in case no one will sell me I'll get the 2.8 because that's for welding / tires / … - more "home applicable" and less sus than 5.0.

 

[ClownWorld2023]

You can just say it's for beer brewing, nitro coffee, or for the kitchen.
About the purity: 2.8 should be good enough, but if you can get higher then that's better of course.

I don't know my gas cylinder's purity, but oxygen measurement was 0.4% after two minutes of flow.

 

[My_name_is_Luka]

for the kitchen

which use for the kitchen? for preserving food in an oxygen free package?

 

[ClownWorld2023]

which use for the kitchen? for preserving food in an oxygen free package?

I don't think they'll be that specific when asking.
(I wasn't asked anything at all.)

Just mentioning beer brewing, nitro coffee or making drinks should be enough.

 

[My_name_is_Luka]

Thanks. Everything is useful to avoid giving a suspicion of the real intention.
I've recently been reported to suicide prevention services by a toxic asshole that abused me and got scared of the consequences. I hope that such services do not give a list of names to gas providers. Hopefully this is protected by the laws of privacy.

 

[scubadam]

I don't know my gas cylinder's purity, but oxygen measurement was 0.4% after two minutes of flow.

why did you wait for two minutes? and what measurer did you use?
afaik gas cylinder's purity doesn't make a difference - it's made by it's tightness (eg when it's not leaking)

 

[stupidhuman]

You can just say it's for beer brewing, nitro coffee, or for the kitchen.
About the purity: 2.8 should be good enough, but if you can get higher then that's better of course.

I don't know my gas cylinder's purity, but oxygen measurement was 0.4% after two minutes of flow.

I see thanks, what's the best way to put the bag on ?

 

[ClownWorld2023]

why did you wait for two minutes? and what measurer did you use?
afaik gas cylinder's purity doesn't make a difference - it's made by it's tightness (eg when it's not leaking)

It took time for the oxygen measurement to be low enough.
After the first minute, it was 2%, very low, but doubtful.

Whether purity makes that big of a difference, I don't know, but less oxygen is better of course.

The oxygen meter I used was a different one than most others used in the megathread (the Chinese one), but I don't want to put the brand/model here publicly.

I see thanks, what's the best way to put the bag on ?

I use an EEBD hood.

I found the bag had too many things that could go wrong.