MODEL 5420


High-end condensation particle counting in 19" racks

The GRIMM 5420 is the 19” rack version of our high-end professional all-inclusive CPC with the option to be operated as fully equipped SMPS system (see SMPS+C) with an aerosol inlet flow of 0.3 L/min. The new detection head enables single particle counting up to 150 000 particles /cm³ with improved detection efficiency (D50 = 4nm) and response time (t10-t90 < 3 s). The photometric mode allows for the detection of high concentrations up to 107 particles/cm³. As all GRIMM CPC models, the 5420 features the well-established condensate removal and anti-spill saturator design with an integrated saturator shutter, enabling the transport of the CPC without removing or drying the saturator.


  • advanced all-inclusive CPC with SMPS option
  • aerosol flow rate = 0.3 L/min
  • improved detection limit with D50 = 4.0 nm for tungsten oxide particles
  • single particle counting up to 150 000 /cm³
  • improved response time with t10-t90 < 3 seconds
  • tolerant to high ambient temperatures (40°C)
  • operates with preconfigured software on a notebook
  • analog inputs for additional sensors
  • comprehensive self-test for highest reliability
  • anti-spill saturator design
  • continuous removal of condensate
  • operates with air and inert gases


  • fundamental aerosol research
  • filter testing
  • environmental & climate studies
  • nanotechnology process monitoring
  • printer emission studies
  • inhalation & exposure studies
  • studies on atmospheric nucleation
  • studies on nanoparticle growth, coagulation & transport
  • engine exhaust studies
  • obile aerosol studies
  • workplace monitoring


max. concentration single count mode

150 000 p/cm3

max. concentration photometric mode

107 p/cm3

particle size range

4.0 nm (D50 measured with tungsten oxide particles) to greater than 3 μm; adjustable to 7.0 nm for compliance with the CEN/TS 16976:2016 for determination of the particle number concentration of atmospheric aerosols

concentration accuracy

>95% for single particle counting (up to 150 000 p/cm3)
10% for optional photometric mode (up to 107 p/cm3 at specified conditions)

rise time t10 - t90

< 3 s

internal pumpyes

flow rate sample air

0.3 L/min

flow rate sheath air

3.0 L/min

flow control

critical orifice with stabilized temperature; constant volume flow independent from ambient conditions

aerosol carrier gas

air and inert gases

working fluid

n-butanol (n-butyl alcohol)

condensate removal

continuous drain with micropump

SMPS+C optionyes


USB or RS-232

analog input

port for 3 optional analog climatic or gas sensors, plug and play

data recording

directly on PC (GRlMM universal software 5477), optionally on USB stick

status indication

display and 4 LEDs with 3 colors

ambient temperature

10 to 40°C (50 to 104°F)

ambient humidity

0 to 95% RH, non-condensing

absolute pressure range

500 - 1100 mbar

power supply

90 - 264 VAC, 47 - 63 Hz

power consumption

80 - 130 W

size (h x w x d)

19", 22 x 48 x 41 cm (8.7 x 19 x 16 in)


16,2 kg (35.7 lbs)


GRIMM developed a powerful software to visualize, process, and import as well as export your valuable measurement data.
This easy-to-use program is compatible to Windows XP and all later versions.

Please contact us for your for free trial version if you already own a GRIMM measurement device or more information if you are in the process of finding your measurement solution.


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