Profile: In House Gas is a supplier of nitrogen generators, hydrogen generaters, air dryers, compressed air units, and re-furbished generators. In our nitrogen generators, N2 flow range is perfect for all laboratories. We provide small amounts of high purity gas for gas chromatography. Our N2 flow range can produce constant flows from as little as 1 L/min up to 10 L/min high purity nitrogen. Our H2 flow range offers a reliable and safe alternative to cylinder stored hydrogen.