Porter Instrument is a US manufacturer of nitrous oxide and oxygen systems, nasal hoods, breathing circuits and related accessories. For over 50 years Porter has been known as the “Trusted Name In Nitrous” with high quality products and reliable service. Featuring both Porter and Matrx brand products. Our products are sold world wide – if you are a dentist let us know where you are from and we will connect you. If you are a distributor we are happy to discuss opportunities.