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Complete Calibration Kit for Draeger Safety 4 Gas Monitors
This Kit is for a Standard 4 Gas Monitor with Oxygen, LEL, CO and H2S Sensors
Includes everything needed to calibrate the instruments: Carrying Case, Regulator, Adapters, Calibration Gas
Size: 34, 58 or 116 Liter Cylinder size (select when ordering)
Concentration: 17% O2, 25 ppm H2S, 100 ppm CO and 50% LEL Methane (2.5% Vol)
Shelf Life: 24 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.
Here is a link to learn more. http://www.portagas.com/products/portagreen/