For any gas plants, purity testing is an
important procedure which ultimately leads to production of the final
output. A purity test is required to know the purity percentage of the gas
that is produced in the plant. When a particular product undergoes the
purity test, it is obvious that the final output that is produced, processed
and finally distributed is in its pure form and hence can be used in
industrial, commercial and residential applications. This applies to all
forms of gases and liquids whether it is oxygen, nitrogen or LPG or CNG etc.
There are different types of purity tests that can be performed on
different gases. The basic purpose of any test is to give the right amount
of quality of the object. Gases in gas plants need to undergo purity test so
that the principles of quality assurance can be applied to the construction,
design, operation and supply of any gas plant unit. Quality assurance
ensures that standards are consistently met. Different applications require
different levels of gas purity. Purity is measured as a percentage value,
for example 99.996%. Gas purity can also be abbreviated to 4.6, where the
first digit implies the number of 9s and the last digit refers to the finest
purity gradation.
We explain below the purity test procedures of certain gases:
