If you are new to cleanroom equipment, you may be confused by cleanroom fan filter units and air handling units. Here in this article, we would like to talk about the details of cleanroom fan filter units and air handling units. Following is the details. For a cleanroom air handling unit, which is a part of a HVAC system, it plays an important role in temperature, humidity and pressurization in the controlled environment. A cleanroom air handling unit consist of primary filters, fan, cooling coils and a mixing chamber. The primary filters are installed in front of the HEPA filters to catch some larger particles and extend the working life of HEPA filters. And fan controls can be intergrated in to fan filter control system, it also can be placed in control panels. And for cleanroom fan filter units, which will be used much better in modular cleanroom than the air handling units. Fan filter units can be used in different sizes of spaces with different cleanliness rating. And the required number of fan filters is decided by the requirements on air change rates and cleanliness. For example, an ISO class 8 cleanroom ceiling just needs 5-15% of ceiling coverage,
When you are searching for issues about quality control, you may feel confused. Because sometimes you can see “quality assurance”. “quality control” and “quality assurance” sometimes are used in a mix. But actually, they are different and they shouldn’t be used with the same meaning. What is Quality Assurance (QA)? Quality assurance is to plan production activities & requirements and ensure these requirements will be fulfilled in the whole developing and manufacturing process. Take a new high-end watch production for example. QA has to do watch research, evaluate watch design, analyze watch sales and business, contact client’s specific requirements, etc. During these processes, QA can foresee the potential problems which haven’t yet happened to the watches. Then QA will pre-define the production processes and standards to prevent these problems. What is Quality Control (QC)? Quality control is a practical activity to inspect and test the products and the production process to ensure the finished products meet quality standards. Still take the new high-end watch production for example. QC inspect watches have been produced. QC finds and rejects defective products, like watches with scratches or painted the wrong color. These defective watches will be asked to rework to ensure the goods
When you are searching for issues about quality control, you may feel confused. Because sometimes you can see “quality assurance”. “quality control” and “quality assurance” sometimes are used in a mix. But actually, they are different and they shouldn’t be used with the same meaning. What is Quality Assurance (QA)? Quality assurance is to plan production activities & requirements and ensure these requirements will be fulfilled in the whole developing and manufacturing process. Take a new high-end watch production for example. QA has to do watch research, evaluate watch design, analyze watch sales and business, contact client’s specific requirements, etc. During these processes, QA can foresee the potential problems which haven’t yet happened to the watches. Then QA will pre-define the production processes and standards to prevent these problems. What is Quality Control (QC)? Quality control is a practical activity to inspect and test the products and the production process to ensure the finished products meet quality standards. Still take the new high-end watch production for example. QC inspect watches have been produced. QC finds and rejects defective products, like watches with scratches or painted the wrong color. These defective watches will be asked to rework to ensure the goods
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