COMPASS

Quality Of Gases and Precision of Gas Mixtures

GAS QUALITY
quality type: technical 24 40 45 46 48 50 60
purity 1) [%]: > 99.5 > 99.4 > 99.99 > 99.995 > 99.996 > 99.998 > 99.999 > 99.9999


MIXTURE PRECISION
class realization
of the mixture 		accuracy of the analysis impurity 1)
I +/- 10% relative - not specified 2)
II +/- 5% relative +/- 2% not specified 2)
III +/- 1 ... 2% relative +/- 0.5 ... 1% not specified 2)
IV as precise as possible
(at least +/- 5% relative) 		as precise as possible
(at least +/- 2%) 		< 0.1% (1000ppm)
(major impurities
~1% (10000ppm)
are indicated)

1): for the impurities refer to the descritions of the individual gas (availiable in german or french)
2): correspond to the quality types of the used gases

This page was last updated on January 18, 2002 by Eric Weise