FP-25 Calibrator Kit for Air Quality Monitoring


Calibrator Kit for PM Samplers and Air Quality Analyzers

Use FP-25 to audit and calibrate PM10 and PM2.5 particulate matter samplers and air quality testing/analyzer devices to regulatory standards.

  • PM air monitor compatibility. Compatible with all PM air monitors: TEOM, Partisol, Beta Attenuation Monitors (BAM), T640.
  • Easy integration. Bluetooth antenna plus Alicat Connect app remotely reads air sampler measurements, with data-logging capabilities for data management software.
  • Accurate, multi-variate measurement. NIST-traceable mass flow, volumetric flow, pressure, and temperature measurements to ±1% of reading.
  • Portable & durable. Battery-powered calibrator mounts directly to air monitoring (FRM or FEM) instrument, negating effects of wind gusts. Any weather—IP67 rated. Accurate from -30°C to +60°C and up to 95% relative humidity.

To learn more about how the FP-25 works, check out this article on flow standards for PM air samplers.


0.125 – 25 SLPM

FP-25 Portable mass flow controller

Compatible PM air monitor samplers and analyzers

The FP-25 can be used to audit and calibrate flow, pressure, and temperature readings for the samplers and analyzers below:

  • PM10 and PM2.5 FRM samplers (16.7 LPM) – Mesa Labs PQ series, Met One E-FRM, Thermo Scientific Partisol 2000/2025(i) and Dichots, Tisch TE-Wilbur
  • PM10 and PM2.5 FEM analyzers (16.7 LPM) – Environment S.A. MP101M, Met One BAM-1020/1022 and E-BAM, Thermo Scientific BAM 5014i, SHARP 5030i and TEOM 1400(a/ab)/ 1405 and Dichots, Teledyne T640
  • IMPROVE network PM samplers (22.8 LPM)
  • Low-flow PM samplers (1-5 LPM) – Ecotech MircoVol and Protinus, Grimm EDM, Met One E-Sampler
  • Carbon speciation samplers (22.0 LPM) – URG-3000(N)
  • Carbon speciation samplers (6.7 LPM) – Met One SASS and SuperSASS
  • Black carbon analyzers (1-5 LPM) – Magee Aethalometer, Met One BC-1050

For help setting up your calibrator, read more here.

FP-25 PM Air Sampler calibration kit

Build Options

Flow range
0.125 - 25 SLPM
Flow measurement range
0.5 - 100% of full scale
Flow accuracy (NIST-traceable)
±1.0% of reading
Barometric pressure accuracy (NIST-traceable)
±1 mmHg across 475-825 mmHg
Temperature probe accuracy (NIST-traceable)
Pressure drop
0.10 PSI @ 16.7 LPM; 0.16 PSI @ 25 LPM
Typical flow reading response time
5 ms (may be up to 10 ms under very low flow conditions)
Typical temperature and humidity equilibration
< 5 minutes
Compatible gases
Ambient air only
Operating temperature
-30°C to +60°C
Ambient pressure
475 - 825 mmHg
Proof pressure
Max differential pressure
User-selectable reference conditions (default)
25°C & 1 ATM (STP); 0°C & 1 ATM (NTP)



FP-25 Flow Calibrator Operating Manual

Specification Sheets

FP-25 Flow Calibrator Specification Sheet


FP-25 Brochure


Alicat FP-25 calibrating in the field

Calibrating in-field PM air samplers

FastTrack Ordering

M/MC mass flow meters and controllers that ship in just 3-5 business days.
Standard or High Accuracy
Monochrome, Color, or None
Analog, RS-232, RS-485, or Modbus RTU
MD8, Locking Industrial, DB9M, DB15


2 SCCM - 500SLPM


2 SCCM - 100SLPM

Service and Support

Whether it is time for your instrument’s annual recalibration or your instrument needs a repair or upgrade,
you can fill out the Service Request Form below, email us, call us, or start a live chat session to get the service process started.

7641 N Business Park Dr. Tucson, AZ 85743

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6921 EW
Duiven, The Netherlands