ISO 16890 standard is the new standard that has replaced the EN779: 2012.
This standard covers Coarse filters (Class G), Medium filters (Class M) and
Fine filters (Class F) and eliminate the insufficient points of the old standard.
With this change in standard, filter users will be able to choose the filter
much more accurate according to their needs. ISO 16890 standard considers
for the particle size (Particulate Matter = PM) between 0.3 μm and 10 μm for
efficiency evaluation. Filters are divided into 4 groups.
ISO 16890 TEST SYSTEM - FTS 3401
ISO 16890 TEST PROCEDURE STEP BY STEP
of the ISO
an air filter at
a particle size
range of 0.3 μm
to 10 μm.
The Filter is
again to measure
each PM size is
calculated by the
mean of both
for ePM1 are
calculated for the
0,3 -1 μm , ePM2,5
for the particle
size range of up to
2,5 and ePM10 for
the particle size
range of up to
values in the
For example; According to the test result, the F8 class V-Compact Filter is classified as “ISO ePM1 70%”. This means that the filter seperates %70 of PM1 particles.
The “e” stands for efficiency in combinition with the particulate matter (PM).
Some details about ISO16890
Efficiency is given according to PM10, PM2,5 and PM1.
The dust holding capacity is calculated for ISO A2/AC Fine synthetic test powder.
Initial gravimetric arrestance efficiency is calculated.
The filter differential pressure drop (Δp) is measured at the nominal air flow rate.
For efficiency evaluation, the particle size is between 0.3-10 μm.
The efficiency is measured separately according to the particle range.
The efficiency measurement is repeated 24 hours after the IPA process.
The «ePMx efficiency» is calculated with the measured efficiencies.
The filter performance is determined according to PM10, PM2.5 and PM1.
Seperately efficiency results in each particle channel.
The process is considered when selecting the filter.
Global (ISO, International Organization for Standardization).