Check this link:
https://sydneytools.com.au/product/speedgas-botarcp-c-size-bottle-with-argon-pure. Could you point out the sources that mention the capacity of C size being between 170 L and 255 L. I could also be wrong.
What you have looks just fine --600L. Tank size and nomenclature is notoriously non-standardized --I now know a "C" in Australia is completely different from a "C" in the US-- and it looks like I just re-discovered that.
TireHorse... do you have any ideas on how to deal with the survival instinct? i put aside some opiates from my surgery. seems when i was high on the morphine i didn't care about anything.
I wish I did know how to deal with SI, but as I've mentioned, it shut down six attempts in a year. Morphine sounds like as good an idea as any I've heard, so long as you remain coordinated and mentally acute enough to activate the eb/N2 equipment.
Some things I did before my attempts that I believed kept me calmer:
• Sitting with the bag over my head, no gas running, just seeing how it felt and letting the air run down. It showed me that it takes a surprisingly long time for the air to run out and the hypercapnic alarm to kick in. It also got me used to the rustling of the bag.
• Doing several set-up dry runs: retreiving the tank from where I have it stowed, lashing it to the leg of the chair, running the tubing, getting the bag onto my head and the tube in place --everything in the process right up to turning on the gas. It ironed out all the kinks, told me what might go wrong, so that when the time came I didn't have any small problems that might have thrown me off balance. It also got me used to handling the equipment.
• In the same vein, doing dry runs of setting up all the paperwork and notifications, even to scheduling the emails (and then deleting them!). Again, it ironed out all the kinks and gave me confidence in my protocols.
In the end, none of those foiled SI --and I'm not sure they would if I were to again attempt. They
did make me more confident that all would go well aside from my own reactions, and remove any mysteries about the mechanical process, which for me was important. If my recovery attempts fail and I again head for the bus stop, I will be doing the same thing.
A couple things I learned that might be helpful:
• When practicing with the bag on my head, no gas, the bag fogs up horribly. It's quite annoying. However, then doing it "for real," the gas flushes away the condensation and there isn't any fogging to speak of.
• The hiss of gas flowing through the tube is surprisingly loud and, to me, distracting. Or perhaps "loud" isn't quite right --very noticeable. I kept meaning to put on earbuds and some good tunes to mute the sound of the gas, but never remembered. Another sign of my stress, perhaps.