is permagas clean enough for iso-hash?

[yungezz]

hi peeps, any one know if permagas butane is as clean as newport?. it seems to be the most available here in the uk. i need 30 - 40 tins so i am wary of where to buy it from. the small asian run shops would sell their granny LOL, but only seem to stock permagas.

if i could find a wholesale store online, i might order newport from them.
any help appreciated.
Ta.