ISO 16890 – The New Standard in Air Filtration Replacing EN779
The ISO 16890 Test Standard was launched in 2017 to replace EN779:2012 for general filters. The new ISO 16890 provides a test more practical and closer to real operating conditions by testing against a range of particle sizes from 0.3µm through to 10 µm. ISO 16890 will categorise air filters into four initial categories. ISO 16890 is only for general filters. Higher efficiency filters like HEPA ULPA continue to be classified to EN 1822.
Coarse |
< 50%of PM10 |
ePM10 |
> 50%PM10 |
ePM2.5 |
> 50% of 2.5 |
ePM1 |
> 50% of PM1 |
Within these four categories each available air filter will have to state their efficiencies against the individual particle sizes – PM1(0.001mm), PM2.5(0,0025mm) and PM10(0.01mm). To qualify in that filter class the filter must show 50% efficiency to that particle size.
When do you know its time to change the Filter Bags
When you see dust streaming out from the collector’s exhaust stack or dust build in plenums it means it is about time you change your Filter bags, whereas a sudden change in differential pressure signifies that the bags are damaged or broken.
Most common reason of early damage of bags is either abrasive dust, damaged cages, fire, excessive heat, excessive moisture or a chemical reaction like hydrolysis. Sudden increase in differential pressures means that the bags are reaching the end of their life cycle.
Sometimes incorrect felt/media when bags are sourced directly from a third party could also lead to early deterioration of the bags or the bags performing sub-optimally. Our expert team having more than two decades of experience will guide you in correct selection considering all factors including temperatures, chemical composition of the dust and gases, fan hp,air volume, ductwork losses etc.