I know about NY State. I had to get a prescription for O2 at 15 LPM...Then go to a medical supply house and be overcharged for it(medical is a red flag). Here in TX I took my script to a local welding supply house..no problem. Not a fan of NY laws.

PS: ya gotta get a high volume min 15 LPM..regulator and CH mask....an even when ya wanna tear the fuckin mask off and throw it...cause it pisses you off....and the noise is just too much....and the beast tells you "this is bullshit"....DON'T.....KEEP SUCKInG DEEPLY..It was not easy for me at first...I'd scream and toss that mask off..."the pressure on my nose is making it worse"...with my whole heart I beg you to ignore that thought...SUCK that o2....long and hard.get a long hose so you can pace and and fall and and cry and beat yer head... BUTT KEEP breathing deep....Have faith that us old Clusterfarts know what we are talking about....or say fuck it and ride that bull.