This part of ISO 6145 specifies a dynamic method using permeation membranes for the preparation of calibration gas mixtures containing component mole fractions ranging from 10−9 and 10−6. A relative expanded uncertainty of 2,5 % of the component mole fr
04-09-2023
21
كيماوية
الغاز الطبيعى
اختبارات
415 ج.م.
ISO 6145-10/2002
متبناه
غير الزامى
71.040.40