Hydrogen Sulfide (H2S) Calibration Gas - 25 ppm

Replacement Bottle of Calibration Gas from Portagas

Size:  34 Liter, 58 Liter or 116 Liter (select when ordering) 

Concentration:  25 PPM Hydrogen (H2S) with a Balance of Nitrogen  (Please let us know if you need a different concentration at check out)

Shelf Life:  24 Months

***** Please note that we use two different suppliers of calibration gas, so the case may be different, and bottle may be a different color than the images listed *****