Archive for March, 2018

Clean Room Commissioning

Cleanrooms are used in a wide variety of industries such as Pharmaceutical, Biotech, and Medical Device. Each Cleanroom play critical roles in maintaining contamination free production environments for critical processes. To ensure your cleanroom is working as designed it is essential that a well planned and executed cleanroom testing and certification and maintenance program is undertaken for operation and regulatory compliance. APT cleanroom testing offers clean room testing and clean room commissioning certification.

Clean Room Environment

It is imperative that companies know if any airborne contaminants put products at risk. It is also very important to understand what the contaminants are, and their origin. Important environmental measurements, like airborne viable particle measurements, assist with keeping processes in control and with helping to find the root cause of unwanted events such as the ingress of filter pollutants such as microbes, dust, and chemical vapours. With so many hazards to contend with it is essential to monitor cleanrooms for viable particles and other potential contaminants to ensure a clean environment is maintained at all times.

These controlled environments when used in conjunction with the correct protective clothing, equipment, and practices, keep people safe while allowing manufacturing, research, and even medical procedures to be performed consistently and with minimum downtime.

Clean Room Commissioning
To ensure this consistency, standards have been created by the International Standards Organization. With the implementation of ISO 14664-1: 2015 and ISO 14644-2: 2015 through to 10 as well as ISO14698-1 through 3. These documents outline terminology and measurement units, compliance testing standards, surface and air contamination definitions, and more referenced when undertaking clean room commissioning and validation testing.

Cleanroom Technology

Cleanroom technology has been greatly refined over the last 20 years. Improved HEPA filtration along with HVAC efficiencyand construction technology is improving efficiency. HVAC and filtration is especially important in cleanroom design, as the air-change rate ranges help determine a cleanroom’s classification. The ACR is how many times per hour the volume of air in the room is replaced. In a normal home, the ACR is a maximum of 2, but cleanrooms can reach over 700 – the higher ACR the higher the ISO standard for the cleanroom.

According to the latest ISO standards, there are 8 classes of cleanrooms, with different standards required for various applications. Each of the eight ISO classes is determined by how much particulate of specific sizes exist per cubic meter.

The corresponding ISO standards necessary for each particular class of cleanroom should remain consistent across all equipment to ensure full protection. Without ISO adherence, contamination can cause equipment breakdown and quality degradation. Considering most cleanrooms are a company’s main critical it is essential that they are maintained in-line with relevant ISO standard.

Each classification also has different testing requirements to ensure standards are being met. The following chart lists mandatory tests and frequency to maintain ISO compliance

In addition to the Particulate Count Testing and HEPA filter testing you can also undertake containment leakage, recovery, and airflow visualisation. These additional tests aren’t required for compliance but can help proactively maintain a cleanroom environment, especially in high-risk environments with stringent ISO standards.

APT has your Clean Room Commissioning Covered.

I hope the above information was informative. If you would like some more information in regards to our cleanroom testing service please don’t hesitate to contact Darren directly on 07775623464 or email at

Operating principles of an air conditioner

An air conditioner works and cools the air in a room on certain principles. The refrigeration cycle is one of those principles. In this process, the heat from the colder location is transported to a hotter place. Heat has a natural tendency to flow in the opposite direction and this makes work an important source to achieve this transportation. This process is similar to the working of a refrigerator. A refrigerant that is used acts as a medium in absorbing and removing heat from the space. This in turn cools down the space and the heat that is absorbed is then ejected to someplace else. The refrigerant vapor that keeps circulating enters the compressor. Compressor is the place where the temperature and the pressure are increased. The refrigerant vapor which is compressed and is hot reaches the pressure point and the temperature which allows it to be condensed easily. This is then routed through a condenser. In the condenser, air flows through their coil which in turn cools the vapor. Thus, the vapor is transformed into liquid. This helps the refrigerant that is circulating to remove the heat from the system overall and this heat is then carried away by the air. Removing heat can also be sped up by pouring water over the coils of the condenser as it makes the process to occur very quickly. This will also make the coils much cooler than usual when the water hits the expansion valve.

Need for aicon repair

As the lives of people are becoming more and more dependent on manmade inventions in order to live a comfortable life, they are in constant search for people who can help them in maintaining these inventions in a good condition for a long time. This is because; life becomes very hard without technology and the inventions.  There are a lot of small problems in an AC that can be rectified by the users. The availability of Do It Yourself videos that is available from the professionals help a lot in this. There is a great need for affordable aircon servicing since people wish to save their hard earned money. Any person who wishes to keep the equipment in a good shape for a long time can read more on read more on aircon servicing and follow them regularly to get the utmost efficiency from the equipment. Similarly, we can read more on aircon repair on the internet.