BW Technologies Nitric Oxide (NO) 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 Nitric Oxide (NO) with a Balance of Nitrogen  (Please let us know if you need a different concentration at check out)

Shelf Life:  12 Months

These are the Special “PortaGreen” Refillable Cylinders. It even includes a return shipping label.

PortaGreen provides a hassle free cylinder return program designed to reduce HAZMAT costs and your carbon footprint.

• Eliminates HAZMAT Liability
• No Disposal or Return Fees
• Reduced Cylinder Footprint
• Increased Shelf Life
• Easy To Return
• All blends available

Here is a link to learn more. http://www.portagas.com/products/portagreen/