To anyone who's interested, you don't have to use an argon regulator with a tank of nitrogen and perform mathematical calculations to get it right (no offense intended toward George). You can use a click-style oxygen regulator with the nitrogen tank because nitrogen and oxygen have almost the exact same "weight" to get the 15 LPM of flow you need.
Here's a crash course in the basics of what you need for using an O2 regulator with a tank of nitrogen:
Use a 0-15 LPM click-style oxygen regulator with an adapter. Read this thread:
Max Dog regulator ridiculous price | Sanctioned Suicide
I looked at the Max Dog regulator kit. The price is ridiculous... $330. What a crock It looks like the Medline HCS8725M regulator. This one has a max 25l/min flow and a 15l/min setting. The usual price is $30. This is part of a series of regulators with varying maximum flow rates. There is a...
https://sanctioned-suicide.net/styles/uix/images/favicon-32x32.png sanctionedsuicide.com
The comments posted by Fister (RIP) will tell you the exact parts to get. You'll have to search on Google using the part numbers he gives but you'll find the needed items.
Fister posted a pic of what the Medline regulator, Western Enterprises and a nitrogen tank look like when everything is connected. That set up will work for the inert gas/exit bag method, as he himself proved.
For convenience here are the part numbers:
1) Medline HCS5415M 02 regulator
2) Western Enterprises 415 adapter
There's a second thread linked to in the thread above you may also want to read.
You can buy a somewhat more expensive 02 regulator from WT Farley (but I don't know if it's actually more precise or reliable than the one Fister recommends in the thread above):
https://www...w,,,t,,,,farley...(DOT).....com/Oxygen-Standard-Body-Click-Regulator-CGA-540
Select the barb-style outlet from the dropdown menu.
I altered the URL because we're not allowed to post active links directly to sources here on SS. You can also get the Farley 02 regulator from Amazon.
1) Go to Amazon
2) In the search box type in: Oxygen Regulator Standard Body-CGA540
3) Scroll down a little and you'll see:
"Oxygen Regulator Standard Body-CGA540, 0-15 LPM, barb outlet with green color coded gauge protector"
You'll still need the Western Enterprises adapter which can be bought from Amazon using a search with the phrase "western enterprises 415, cga-580-540 adapter". Scroll through the results to find the seller with the lowest price.
The adapter can also be purchased from other websites using a Google search.
You'll have to get a tank of nitrogen on your own, either by buying an empty tank over the 'net and having it filled at a local inert gas supply company, buying a filled tank from a local company or possibly finding a company on the 'net that will ship an already-filled nitrogen tank to you.
There was a supplier often recommended here on SS that used to ship filled nitrogen tanks to people but they removed that option from their website because they realized what those people planned to use them for.