Quantities and Accuracy
To avoid oxygen toxicity and narcosis, the diver needs to plan the required mix to be blended and to check the proportions of oxygen and inert gases in the blended mix before diving. Generally the tolerance of each final component gas fraction should be within +/-1% of the required fraction. Analysis instruments commonly used by recreational/technical diving gas blenders are typically capable of a resolution of 0.1% for both Oxygen and Helium.
Read more about this topic: Gas Blending
Famous quotes containing the words quantities and/or accuracy:
“Compilers resemble gluttonous eaters who devour excessive quantities of healthy food just to excrete them as refuse.”
—Franz Grillparzer (1791–1872)
“The child who has been taught to make an accurate elevation, plan, and section of a pint pot has had an admirable training in accuracy of eye and hand.”
—Thomas Henry Huxley (1825–95)