Product Description Industrial Scientific 20.9% Oxygen, Nitrogen Balance, 34 Liter (Volume 1.2 Cu Ft)For best results, use only Industrial Scientific calibration equipment for regular instrument calibration and maintenance. All Industrial Scientific calibration cylinders are manufactured to the highest quality standards and include NIST traceable blend techniques, analytical leak testing of every cylinder, certified component concentrations and clearly marked lot numbers and expiration dates.This Industrial Scientific 34 liter of 20.9% O2 is used to zero all ISC instruments and AirAware. If you have any questions regarding your calibration gas or just want to make sure you are selecting the correct combination please contact customer service @ 800-949-7233.Please note that this cylinder of gas has a 36 month expiration. Durawear ships the newest cylinders of gas that are available from the manufacturer. Reviews 5 Air Calibration Posted by Any User on Oct 3rd 2018 Provides needed defined O2 air supply for calibrating the meter, very convenient.
5 Air Calibration Posted by Any User on Oct 3rd 2018 Provides needed defined O2 air supply for calibrating the meter, very convenient.
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