THE GAS / What does the tracer gas mix, 5% Hydrogen in Nitrogen, cost and how much will I consume ?
The Hydrogen gas-mix costs about 5 USD per 1000 liters which makes it the least expensive tracer gas of all. How much you will have to use depends on what you are using it for. You can calculate the gas per test by knowing the internal volume of the object and the pressure used at the test. Then you just multiply by the number of test per day/month/year and you will get your consumption figure.