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Helium to hydrogen thread adapter / was Re: [GPSL] Helium Supply (in 2018)
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On Amazon now it's $26.94. You can go lower than that on ebay right now.
On Wednesday, April 18, 2018, Bill Brown wrote:
You will need a CGA-580 to CGA-350 adaptor to use a helium regulator with a hydrogen tank but the adapter can be bought on Amazon for around $15. Also, don't crack open a hydrogen tank unless there is a regulator on it.