AS Wraysbury has a HASKEL pump they can get the most from there O2 cylinders which makes blending more fun. There approach is more old school none of these modern mixing panels that do it for you. There your the one watching and controlling the dials to blend the gas.
Well I mixed around 6 different mixes, and it amazes me still that giving it a simple shake can make all the difference, all of my mixes were within the 1% allowed.
