Air sampling

[x-z]

Провести анализ воздушной среды на содержание ВПОВ.

Run air sampling to ???exlude?? presence of inflammable matters

[silly.wizard]

matters - не думаю

Sample/Analyze air to (establish presence/measure levels) of ...
+ conduct air sampling/analysis to ...

[x-z]

Да с matters конечно погорячился наверное.

Conduct air sampling to establish presence of inflammable gases

[the_wanderer]

conduct air samlpling to detect any inflammable gases
establish presence - фраза не для технического текста имхо

[Тимурыч]

Collect air samples to measure the presence and concentration of explosive and flammable substances in the ambient air.

[x-z]

Всем большое спасибо!