because most combustible gas meters are oxygen dependent and will not provide reliable readings in an oxygen deficient atmosphere .. balls
because most combustible gas meters are oxygen dependent and will not provide reliable readings in an oxygen deficient atmosphere
An oxygen meter measures the percentage of oxygen in the air being tested.
The atmosphere is 79.9% oxygen.
To test oxygen content in a canned product, you should use an oxygen absorber packet. This can tell you (not exact) how much oxygen is in something, like a package.
21%
Take a test tube and put inside it a glowing splint. If the splint relights, the oxygen is present. If not, there is no oxygen.
The oxygen content in air would have decreased. This is because photosynthesis is a process which keeps the balance between oxygen and carbon dioxide by converting carbon dioxide to oxygen.
no
Oximetry.
it was first tested in April 1973.
if............?
the air in his body