Positive air pressure is when the air pressure inside of a system is greater than atmospheric pressure outside of the system). In some scenarios, positive pressure is used to ensure there is no entry of the surrounding environment into the closed system.
A fume extractor is a system utilizing a fan to pull fumes and particulate into a filtration system cleaning the air of harmful chemicals and particulates. Industrial processes create fumes or particles such as welding, sanding, grinding, spraying, powder filling, and chemical applications. Fume extractors use a variety of filters while some systems, depending upon application, use multiple filters in line. The combination of the powerful fan and high-quality filtration media creates a recirculating air pattern for ductless units. Because of the air flow, ductwork or costly replacement air is not required. These units take up less space, weigh less, are more energy efficient, and have easy access to change filters.
A ducted fume hood is a ventilated enclosure used to protect labs and users from hazardous and respirable fumes, dust, and particulates. By utilizing a ducting system, this exterior-venting exhaust hood is typically used for applications with high volumes of volatile organic compounds, and toxic chemicals, gases, or powders.
Advantages of using a Lab Procurement Services company instead of a lab supply distributor (such as Avantor/VWR, Fisher Scientific) in terms of pricing, level of customer service, and volume of data/analytics provided.