Tell us where you live?
F.eks. Bratek i Drammen.
Lower Eikervei 14, 3045 Drammen. bra-tek.no/ [/ QUOTE]
That's who I have been using for the last few years, but when the cylinders get low on pressure it fouls the beer
Is it your cylinders you mean? According to my CO2 supplier you need to refill at 2 bar in the cylinder to avoid oxygen contamination. If it's less than 2 bar then they will not guarantee the quality after s refill.
Maybe your cylinders are rusty on the inside I dunno. I use 6kg rebuilt fire extinguishers and they work great. I use about 12 kg CO2 a year mostly due to purging of oxygen in kegs and fermentation vessels. I would take your cylinders for inspection an flushing. I assume the local CO2 dealer can offer that.
Strange. But heck try a new supplier. And inspection.
According to my supplier iceco2 there is no difference. It all comes from the same tank filled by the same truck.