ZJNF national standard Design cleanroom Laminar 4ft Flow Hood hepa air filter for air cleaningequipment

The core grade of high-efficiency filters is H13-H14 (Chinese/European standard) or MERV 16-17 (American standard), with a filtration efficiency of ≥ 99.97% for 0.3 micron particles.

Mainstream standard system:

Chinese standards (GB/T 14295-2008&GB/T 13554-2020): High efficiency filters are divided into five levels, H10-H14, and H13/H14, with an efficiency of ≥ 99.97% for 0.3 μ m particles.European standard (EN 1822): divided into five levels H10-H14, with efficiency requirements for levels H13/H14 being the same as Chinese standards.
American Standards (ASHRAE 52.2&IEST-RP-CC001): MERV 16-17 corresponds to high-efficiency filters with an efficiency of ≥ 99.97% for 0.3 μ m particles.

Application and maintenance:

Application: H13/H14 grade filters are widely used in Class 100 cleanrooms such as pharmaceutical, electronic, and biological laboratories.
Maintenance: It is recommended to replace it once every 1-2 years, and specific adjustments should be made based on pressure difference monitoring.