Biosafety cabinet and ultra-clean workbench main certification - Database & Sql Blog Articles

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What are the main certifications for biosafety cabinets and ultra-clean workbench? Since most users are not very familiar with the performance, testing and testing of safety cabinets and clean benches, they have created a blind spot for these instruments. However, sometimes these blind spots can cause fatal injuries, such as laboratory virus leaks in Singapore, Taiwan and Beijing. Whether the ultra-clean workbench or the safety cabinet relies on wind speed to measure safety is not sufficient. Standard testing and certification rules guarantee the credibility of the inspection and the safety of the safety cabinet.

What are the main certifications for biosafety cabinets and ultra clean benches?

Since most users are not very familiar with the performance, testing and testing of safety cabinets and clean benches, they create a blind spot for these instruments. However, sometimes these blind spots can cause fatal injuries, such as laboratory virus leaks in Singapore, Taiwan and Beijing.

Whether the ultra-clean workbench or the safety cabinet relies on wind speed to measure safety is not sufficient. Standard testing and certification rules guarantee the credibility of the inspection and the safety of the safety cabinet.

The current international standards for ultra-clean workbench are:

Air cleanliness level in accordance with ISO14644.1;

Australian Standard AS1807;

IEST-RP-CC002.2 standard;

Biological safety cabinet standard:

US ANSI/NSF49 (secondary safety cabinet);

European standard EN12469:2000 (first, second and third safety cabinets);

The ultra-clean workbench can only protect the sample and does not protect the operator. The certification includes the following steps:

1) Measure the airflow rate of the clean bench with a rotating impeller anemometer and a heat anemometer. Average value of safe airflow: 0.4-0.5 m/s, maximum deviation 20%.

2) Measuring the integrity of the ultra-clean bench filter: using a natural aerosol tester.

3) Measure the internal light intensity and noise of the clean bench.

Biosafety cabinets are currently closely related to scientific research and are secondary biosafety cabinets and tertiary biosafety cabinets. Among them, the secondary biological safety cabinet can be divided into several categories, but the laboratory often uses 30% gas efflux, 70% gas circulation A/B3 type and 100% gas efflux type B2. The biosafety cabinet not only protects the sample but also protects the operator, so it becomes a "safe" cabinet. The detection steps are as follows:

1) Measure the inflow airflow (pre-intake airflow): Use a heat anemometer or a DIM airflow hood.

2) Measuring the downward airflow: There are two ways depending on the NSF49 and EN12469 standards. But both use a thermal anemometer to determine the downflow rate.

3) ULPA filter detection: aerosol photometer, aerosol generator, pressure gauge, PAO gauge.

4) There are also noise, light intensity, and vibration intensity measurements.

5) Finally, the smoke generator is used to test the airflow image.