Mixing Condensation Particle Counter (MCPC)

Model 1720


For applications requiring a particle counter capable of rapid total number concentration measurements down to a few nanometers – the Model 1720 Mixing CPC is packed with features in a very compact package. The particle counter has been deployed on ships, aircraft, on top of Mauna Loa and at the South Pole – with proven low pressure operation, the unit is ruggedized for field use.

  • 180 ms ultra-fast time response
  • 7.0 nm 50% detection diameter
  • On-board data storage
  • Tilt tested anti-flooding design
  • Extremely compact and lightweight
  • Proven continuous 24/7 operation
  • Fully characterized


  • Independently proven 100% counting efficiency
  • Ideal for rapid DMA scanning
  • Low butanol fluid consumption
  • Resists flooding of optics block
  • Low power use and small size
  • Robust field-tested design

Technical Specs

MCPC Tech Specs

parameter value
Particle diameter size range 7 to 2000 nm
Response time 180 milliseconds
Concentration range 0.01-100,000 particles/cc
Coincidence corrected concentration uncertainty @ 100,000/cc +/- 8%
Particle sample flow / saturator air flow 0.36 lpm / 0.36 lpm
Butanol use 1.9 ml/hr
Butanol usage per week 320 ml/week
Reservoir capacity 250 ml (1000 ml available)
Ambient temperature range -20°C to 38°C
Ambient pressure range 200 to 1,000 mb NOTE¹
Ambient relative humidity range 0 to 95% RN non-condensing
(a sample flow dryer is recommended for high RH operation)
Size 5.3 x 8 x 5.8 in/13.5 x 20.3 x 14.6 cm
Weight 6 lb/2.7 kg
Power (@110-230 VAC) <80 watts
1. Operation at pressures <850mbar requires factory installed saturator flow control

Copyright ©2017 All specifications are subject to change without notice. BMI assumes no responsibility for inaccuracies in this document or for any obligation to update information in this document. BMI reserves the right to change, modify, transfer or otherwise revise this publication without prior notice.

*Some products may be shown with optional accessories, which are sold separately. Items shown may not be to scale.

Applications and Solutions

  • Continuous monitoring of size distributions using the Model 2002 Scanning Electrical Mobility Sizer (SEMS)
  • Ambient concentration measurements
  • Laboratory flow-tube reactor studies
  • Cloud condensation nucleus studies
  • Visibility reduction studies
  • Aerosol health impacts
  • Long-term air quality monitoring
  • HTDMA measurements
  • CVI/GCVI inlet cloud residue measurements

What’s Included

The Model 1720 MCPC comes with the following items:

  • Mixing CPC
  • Saturator flow bypass tubing assembly
  • Butanol fill bottle
  • Detailed instrument manual
  • RS-232, USB and BNC cables
  • Graphical user interface software for Windows PC External AC-DC power supply with AC power cord


The MCPC software has been designed with ease-of-use in mind. All of the instrument operating parameters are quickly accessible either via the graphical user interface (GUI) software provided for your computer or directly from the instrument front panel using the data knob. Coincidence-corrected concentrations, raw concentrations, counts or summed counts over a specific time period can be obtained from the front panel display or via the GUI software.

Changes to instrument settings may also be made either through serial commands or directly through the front panel display. Settings include displayed concentration/count/sum type, whether labels are reported for each parameter, communication baud rate as well as calibration coefficients for sample and saturator laminar flow elements. Software tools to easily re-calibrate or validate calibrations of key components like LFEs are provided so you can verify proper operation of the instrument.


The following optional accessories are available:

MCPC Accessories

Part Number Description
8008 Round Jet Impactor with 0.5 micrometer cut size, 0.6 lpm flow
8009 Round Jet Impactor with 1.0 micrometer cut size, 0.6 lpm flow
MCPC-P115 External vacuum pump, 115 V
MCPC-P230 External vacuum pump, 230 V
MCPC-PC Computer with 1720 MCPC control software
MCPC-Dryer Sample flow drying package for 1720 MCPC
MCPC-BOT Large 1000 ml butanol fill bottle for 1720 MCPC
MCPC-Kit Maintenance Kit for 1720 MCPC

Related Products

Contact us to discuss how Brechtel can help you.