+44(0)1565 722609A micron is the unit we use to measure particulate. One micron is equal to one-thousandth of a millimetre. The smallest particle the human eye can see is 30 microns […]
Do I need a positive or negative pressure cleanroom?
This depends on what you are trying to protect. Positive pressure cleanrooms protect the process inside the room from any particulate outside the room. Negative pressure cleanrooms protect the user from the process. Clean Environments have a range of rapid assembly positive pressure cleanrooms. In order to maintain positive pressure, you must make sure that […]
What pressure should I have in my cleanroom?
We would advise that you maintain around 30 pascal of positive pressure inside your cleanroom and 15 pascal in your gowning room. Maintaining this level of pressure will guarantee that no air born contamination will enter your cleanroom. […]
Why does my cleanroom need a pressure gauge?
Maintaining the correct pressure levels is fundamental to the function of the cleanroom. If the pressure is too low contaminants can enter. A magnahelic pressure gauge can measure the differential pressure between the clean (white) zone, gowning room and ambient. […]
What grade is ISO 5?
There are many different ways of describing an ISO 14644-1 class 5 cleanroom. These can include; ISO 5 cleanroom, grade 5 cleanroom, ISO 5, class 5. ISO 14644-1 class 5 is equivalent to the old US federal standard 209 class 100. To compare this to the EU GMP standard, Grade A is approximately ISO class 4.5. […]
Which type of airflow does my cleanroom require?
Laminar Air Flow. ISO 5 (Class 100) and cleaner facilities rely on unidirectional, or laminar, airflow. Laminar airflow means that filtered air is uniformly supplied in one direction (at a fixed velocity) in parallel streams, usually vertically. Turbulent Air Flow.Cleanrooms up to ISO 6 (Class 1,000) do not require laminar airflow and may utilize a non-unidirectional, […]
Why does my clean environment need a filter condition gauge?
The filter condition gauge or minihelic gauge is measuring the differential pressure between ambient and the HEPA filter. This pressure reading will increase over time as the filter blocks. The Clean Environments team will specify your ‘safe range’ on the filter condition gauge; enabling you to accurately assess and maintain your air quality by replacing […]
What clothing do I need to wear in a cleanroom?
In order to control the particulate levels in your cleanroom, operators must wear appropriate cleanroom garments and follow strict cleanroom protocols whenever working in or around a cleanroom. The protocol will vary depending on the classification of your environment and your process. As a general guide; ISO 8. Lab coat, cleanroom shoes or shoe covers. ISO 7. […]
What equipment do I need in my cleanroom?
All cleanrooms over ISO 8 require an area where a gowning protocol can be enforced. In the gowning room it is usual to find a step over bench with a tacky mat on the grey side. Equipment may be required that is specific to your process for example ESD and grounding equipment for sensitive electronic/microelectronic devices. Depending on your process you […]
Are there any materials I should avoid?
Products and materials that are subject to shedding or particulate generating should be banned from the controlled area e.g. cardboard, wood, and mild steel products that might be subject to corrosion. There is also the matter of material and chemical compatibility issues with your process, particularly if the cleanroom space and equipment are subject to frequent […]
