A well-designed air filtration system lies at the heart of hospital cleanroom operation. It directly determines the environmental cleanliness, medical safety and infection control effect of key medical areas such as clean operating rooms and sterile wards. The engineering team…
What Is a Fan Filter Unit (FFU)? A Fan Filter Unit (FFU) is a self-contained air delivery module that combines a fan, a prefilter and a HEPA or ULPA filter in one housing. FFUs are mounted in cleanroom ceilings (or…
What Is a Gel Seal HEPA Filter? A gel seal HEPA filter (also called a fluid-seal or knife-edge filter) seals into its housing using a soft gel channel instead of a traditional flat gasket. A knife edge on the housing…
What Is a High Temperature HEPA Filter? A high temperature HEPA filter is a HEPA filter engineered to operate continuously in hot air streams — typically 250°C to 400°C — without degrading, delaminating or leaking. They are essential in industrial…
What Is an Air Prefilter? A prefilter is a coarse or medium-efficiency air filter placed upstream of a HEPA or ULPA filter. Its job is to catch large particles — dust, fibres, pollen and airborne debris — before they reach…
What Is a ULPA Filter? A ULPA (Ultra-Low Particulate Air) filter captures at least 99.9995% of particles at the most penetrating particle size — a full order of magnitude more efficient than HEPA. ULPA filters are used where absolute cleanliness…
What Is a HEPA Filter? A HEPA (High-Efficiency Particulate Air) filter is an air filter that removes at least 99.97% of airborne particles 0.3 microns (µm) in size — the most penetrating particle size (MPPS). HEPA filters are the backbone…
Why did a pharmaceutical workshop keep struggling with dust despite stainless steel surfaces? The answer led our engineers to make mirror-finished stainless steel frames the standard for our Fan Filter Unit.
High-Temperature HEPA Filters: Applications in Spray Plants & Coating Lines Standard HEPA filters fail quickly in hot processes. Above roughly 80°C, conventional media and adhesives degrade, seals harden, and efficiency collapses — exactly when the process needs protection most. High-temperature…
How Often Should You Replace HEPA Filters in a Cleanroom? “How often should I replace my HEPA filters?” is one of the first questions every cleanroom owner asks — and the honest answer is: it depends. There is no universal…