Glossary

Cleanrooms: Specially constructed, mechanically intensive areas or structures with strict environmental controls for airborne particles, temperature, humidity, air motion, etc.

Although initially used in the aerospace industry, cleanrooms are now used in many fields, including pharmaceuticals, food processing, manufacturing and microelectronics. Most cleanrooms in use are vertical downflow rooms: air enters through a high efficiency filter in the ceiling and exits low on the peripheral walls or through perforations in the floor.

Cleanrooms are rated for purity according to guidelines established in Federal Standard 209D. Each rating class (1, 10, 100, 1,000, 10,000 and 100,000) is a logarithmic curve relating different combinations of particle size and particle count. Air cleanliness is specified in terms of the number of foreign particles per cubic foot (or cubic liter) of air. Lower numbers represent cleaner rooms. How particles are counted depends on particle size: air with smaller particles can have higher particle counts and still meet the class designation.

Prefabricated cleanrooms have a number of potential advantages, one of which is a shorter construction schedule. They can be designed and manufactured off-site while other construction continues, then raised into place. Lower energy consumption and operating costs are also possible. The extensive ductwork associated with conventional cleanrooms create resistance to air flow, or static pressure. which requires additional power to achieve proper airflow. As modular system have almost no ductwork, they use considerably less power.

Renovations. In retrofitting space for reuse as a cleanroom laboratory, determine the dynamic loading of the equipment to be placed around the cleanroom_fans, pumps, motors, transformers_to predict the nature and magnitude of vibration of the structure when the cleanroom becomes operational. Vibration data must be accumulated from an existing cleanroom in operation in the facility. If no such cleanroom exists, then the dynamic loading data must be estimated based on data for similar cleanrooms in other locations. These data are then used in analyzing the dynamic response of the existing structure.

Hardwall Cleanrooms are designed to provide a clean, Environmentally Controlled Environment. Clean levels are available from Class 100,000 to Class 1 (ISO Standards Class 1 thru Class 8), with Temperature and/or Humidity control.

The standard system consists of a Panelized Wall Structure that supports the Roof and Ceiling Grid material. Filtered air is provided by Self Powered Filter Units mounted in Ceiling that draw outside air through a Prefilter and deliver filtered air through a Hepa filter into Cleanroom. Filtered air is exhausted from Cleanroom through adjustable Exhaust Vents near Floor level. Clean levels will vary depending on quantity and configuration of Filters. All components are prefabricated and completely Modular in design. Packages can be installed by End User or by our Factory Trained Technicians.

Softwall Cleanrooms are designed to provide clean environments from Class 100,000 to Class 10 (ISO Standards Class 3 thru Class 8).

This system consists of a Tubular Steel Frame Structure that supports the Ceiling Grid and Clear Vinyl Curtain Wall material. Filtered air is provided by Self Powered Filter Units mounted in-Ceiling that draw outside air thru a Prefilter and deliver filtered air through a Hepa filter into Cleanroom. Filtered air is exhausted from Cleanroom beneath the Curtain at Floor level. Clean levels will vary depending on quantity and configuration of Filters.

All components are prefabricated and completely Modular in design and can be installed by End User or by our Factory Trained Technicians.

Vertical Laminar Flow Benches can be used for many different applications that require a controlled, clean environment at the bench top level. These Benches are free standing and self contained with optional isolated table work surface. Benches can be used in situations where it is not feasible or cost effective to build a cleanroom. In many cases, it would be advantageous to use Clean Benches to establish class 100 clean zones rather than build or upgrade a cleanroom.

Horizontal Laminar Flow Benches can be used for many different applications that require a controlled, clean environment at the benchtop level. These Benches are free standing and self contained with optional isolated table work surface. Benches can be used in situations where it is not feasible or cost effective to build a cleanroom.In many cases, it would be advantageous to use clean benches to establish class 100 clean zones rather than build or upgrade a cleanroom.

Cleanroom Air Showers are prefabricated enclosures to be used for removing surface particles from personnel prior to entering a Cleanroom work areaThe air shower is a high velocity, low pressure type system, providing a normal entrance to and exit from a contamination controlled area. While the workmanship and materials are of a professional quality, the air showers are ultimately engineered to incorporate an aesthetically pleasing design to fit the general atmosphere of the cleanroom specifications. All Abtech Air Showers are assembled and tested directly in the factory for quality control purposes, and then subsequently disassembled for shipping and field assembly.

Pass Thru Cabinets help control contaminants entering the Cleanroom during pickup and delivery of product or supplies. Delivery personnel and contaminants remain outside the Cleanroom; yield and productivity is thereby increased because personnel remain clean and on the job. Pass Thru Cabinets are available in white laminate construction as well as cold-rolled steel, stainless steel, polypropylene and other materials. Standard units feature interlocking acrylic doors with smoke seal gasket to protect your Cleanroom envelope. All inside and outside surfaces are featured with 3/4" high density particle board core for widths up to 28". All lengths over 30" are 1" core.

2" Aluminum Cleanroom T-Grid System: The Abtech 2" Sealed T-Grid System is a heavy duty extruded aluminum grid system, manufactured to provide maximum corrosive resistance as well as the highest struc-tural integrity. It is designed to restrict air flow movement between a cleanroom and its plenum, and to independently support the HEPA or ULPA filter units and other standard ceiling components.

Optional Gasketing for the Dry Seal System is 1/4" x 5/8" and is composed of a completely closed cell structure with minute cells and a smooth surface. It is pres-bond polyethylene foam, cross linked with polyethylene copolymer foam formulated to produce high resiliency and flexibility.

15/16" and 1-1/2" Cleanroom T-Grid System: Abtech, Inc. Cleanroom Grid Systems are designed and manufactured to prevent air movement between a Cleanroom and the plenum. Both the 15/16" and 1 1/2" Steel T-Grid Systems use gaskets to seal the horizontal surface where panels, lighting and air filters rest on the grid. This compression causes gaps to fill horizontally between system members, such as in the case of main tees meeting cross tees or wall angle. Clip assembly requires no special tools. This allows for easy installation, which translates into great cost savings over complicated screwed or bolted systems.