DEMESA is a Canadian owned and operated company established in 2001 and operates in both official languages. Our knowledge and experience extends itself over 40+ years. When we say ‘Instrument Specialist’ we are confident you will get the best service and knowledge. We are committed to you our customer, our partner. Based in Oakville, Ontario, we offer a variety of services and products. We offer complete gas detection solutions in both personal and fixed systems including: calibration, certification, programming, start-up/commissioning, emergency service calls, reporting and instrument maintenance. We sale, service and install products from established companies such as RKI Instruments, MSA Safety, Interscan Corp., Heron Instruments, Hanna Instruments, Critical Environment Technologies (CETCI), and Edinburgh Instruments.