For anyone who uses gas,I picked some of these up the other day.
http://www.argos.co.uk/m/static/Product/partNumber/3408252.htm
They are pure isobutane, a bit more expensive than some at £2.50+, a bit cheaper than Lindal valve mix cartridges. It ran far better on gas feed than the cheaper butane cartridges do, even to the point of being better than a butane propane mix are half way down the cannister. They are not as heavy as the old sort, they only have 220g of isobutane in now rather than 250g of butane, and they have "isobutane mix" written on the side. Well worth the money.
http://www.argos.co.uk/m/static/Product/partNumber/3408252.htm
They are pure isobutane, a bit more expensive than some at £2.50+, a bit cheaper than Lindal valve mix cartridges. It ran far better on gas feed than the cheaper butane cartridges do, even to the point of being better than a butane propane mix are half way down the cannister. They are not as heavy as the old sort, they only have 220g of isobutane in now rather than 250g of butane, and they have "isobutane mix" written on the side. Well worth the money.
