VDI 4221 Blatt 3:2018-01

This standard specifies requirements on the design of interlaboratory testing schemes and the performance and evaluation of interlaboratory tests for ambient air quality measurement methods for gaseous measurement components at test gas distribution systems. The standard applies to interlaboratory testing schemes for control of the quality of test laboratories and the control of measuring systems and measurement methods for the determination of ambient air quality. These testing schemes include interlaboratory tests for gaseous inorganic and organic chemical compounds. The standard may be applied in conjunction with VDI 4221 Part 1 only. The standard applies to providers of interlaboratory tests, to accreditation bodies, to test laboratories and competent authorities in the field of immission control.