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A SailAir tank holds breathing air at up to 207 bar (3000 psi), the same pressure class as a full scuba cylinder, in a body small enough to stow in...

Every operation that offers Nitrox has to choose how it makes the gas. The common methods raise the oxygen above the 21% in ordinary air in differe...

One of the best times to choose a breathing air compressor is before the season starts, while you still have room to plan. Deciding early means you...

Before a cylinder leaves your blending station, the gas inside has to be verified against the mix on its label. That job belongs to the analyzer, a...

A contaminated scuba fill can look and smell exactly like a clean one, which is what makes bad diving gas so easy to miss. The first sign is often ...

You can have a strong season on paper and still watch the profit thin out by month's end. More often than not, the drain is on the cost side, where...