Nitrox fills

[LKunze]

Very true, however the shops that bank the premix do the mixing with partial pressure blending using hyper pure air. If I later went to a shop that did not have hyper pure air for an air fill and then went back to the other shop again for say, an EAN32 premix fill there wouldn't be an issue as the premix is below EAN40. As my tanks are now shops technically shouldn't even give me a partial pressure fill in my tanks because my tanks are not O2 cleaned and do not have the "O2 Clean" sticker on them. Any shop that would give me a partial pressure fill without the O2 clean sticker would technically be breaking a regulation I guess and doing so at their own risk so to speak.