Jeff Raposa and his company, Controlled Enivronment Management (CEM), provide efficient and high quality service at an exceptional price! As the laboratory manager of a local University, I have employed CEM for the past 3 years to inspect and certify our fume hoods. Jeff and his staff are quick, professional, flexible, and always extremely pleasant. Jeff himself sends me an annual reminder that our fume hoods are due for inspection, and is always readily available for scheduling. In addition, Jeff and his company go above and beyond in their customer service. When a staff member at my University asked me a question regarding laboratory ventilation requirements (completely unrelated to CEM's services), I referred the question to Jeff. He responded within 24 hours with a thorough explanatation and several recommendations. It is this type of service that makes Jeff Raposa and CEM an exceptional company to work with. I would highly recommend this company!