Air Quality Sensor Performance Evaluation Center
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Summary Tables & Reports

PM Sensor Evaluations

SCAQMD’s AQ-SPEC program aims at being the testing center for low cost air monitoring sensors to establish performance standards by which sensors are evaluated.  The program evaluates sensors in both controlled laboratory conditions and in the field. In the field, sensors are tested alongside one or more of SCAQMD’s existing air monitoring stations using traditional federal reference/equivalent method instruments to gauge overall performance. Sensors demonstrating acceptable performance in the field are then brought to the AQ-SPEC laboratory for more detailed testing in an environmental chamber under controlled conditions alongside traditional federal reference/equivalent method and/or best available technology instruments.

PM Sensors

Sensor
Image
Make
(Model)
Est. Cost
(USD)
Pollutant(s) *Field R2 *Lab R2 Summary
Report
    aeroqualaqy Aeroqual
(AQY)
Ver. 0.5

 $3,000
             
 
PM2.5  0.84 to 0.87    
 microaeth AethLabs
(microAeth) 
 $6,500  BC
(Black Carbon) 
0.79 to 0.94    
Air Quality Egg 2018 Model  Air Quality Egg
(2018 Model)
 
$249  PM1.0 0.86 to 0.88    
PM2.5 0.84 to 0.85
 PM10 0.12 to 0.13
 aqev1 Air Quality Egg
(Version 1)  
$200  PM ~ 0.0    
 aqev2pm Air Quality Egg
(Version 2) 
  PM  PM2.5: 0.79 to 0.85
PM10: 0.31 to 0.40
   
AirThinx IAQ AirThinx
   (IAQ)  
$1000    PM1.0 0.68 to 0.70    
 PM2.5  0.54 to 0.57  
 PM10  0.03 to 0.05  
 alphasenseopcn2 Alphasense
(OPC-N2) 
$310  PM1.0 0.63 to 0.82 0.99 PDF 
(1,291 KB) 
PM2.5  0.65 to 0.80 0.99
 PM10   0.45 to 0.57 0.99
alphasenseopcn2   Alphasense
   (OPC-N3)   
$338  PM1.0  0.78 to 0.82    
PM2.5  0.52 to 0.67  
PM10  0.45 to 0.52  
 AS-LUNG Stationary AS-LUNG
   (Air Quality        Station)   
 $2000 PM1.0 0.42 to 0.88    
 PM2.5  0.59 to 0.81  
PM10 0.15 to 0.23  
AS-LUNG portable   AS-LUNG
 (Portable) 
 $1000  PM1.0 0.86    
PM2.5  0.78  
 PM10   0.11 to 0.14  
 cair Cair   $200    PM(1-2) 0.43 to 0.51    
     PM(3-10)  0.39 to 0.51  

  Clarity

Clarity
(Node)
 $1300 PM2.5 0.73 to 0.76  
 dylosdc1100 Dylos
 (DC1100)
$300  PM(0.5-2.5)  0.65 to 0.85 0.89 PDF
(1,384 KB) 
 Dylos DC-1700-PM Dylos
 (DC1700-PM)
$475   PM2.5 0.58 to 0.68    
PM10  0.15 to 0.18  
 Edimax Airbox Edimax
 (AirBox) 
$249  PM2.5  0.85    
  Edimax EdiGreen Home      Edimax    
(Edigreen Home)
$299   PM2.5 0.82    
 foobot  Foobot $200   PM2.5  0.55    
 airbeam  HabitatMap  
 (AirBeam) 
$200  PM2.5  0.65 to 0.70 0.87 PDF 
(1,144 KB) 
 AirBeam2  HabitatMap 
 (AirBeam2)
$250  PM1  0.71 to 0.74    
PM2.5  0.63 to 0.75  
PM10  ~ 0.0  
  hanvon1 Hanvon
 (Hanvon N1)
$200  PM2.5 0.52 to 0.79    
 iqairvisual IQAir
 (AirVisual Pro) 
$270   PM2.5  0.69 to 0.73  0.99  PDF
(1,461 KB) 
PM10   0.24 to 0.41  -
metoneesampler Met One
  (E-Sampler) 
$5,500  PM1.0  -    
 PM2.5  0.55 to 0.62  
PM10   -  
 TSP  -  
  metonenm  Met One
 (Neighborhood Monitor)
$1,900 PM2.5  0.53 to 0.67    
 airnut Moji China
  (Airnut)  
$150  PM2.5 0.81 to 0.88    
 partector Naneos
 (Partector) 
$7,000 PM
(LDSA: Lung-Deposited Surface Area) 
PM1.0: R2 ~ 0.1
PM2.5: R2 ~ 0.2
 
   
 laseregg  Origins 
  (Laser Egg) 
$200 PM2.5 0.58    
PM10  ~ 0.0  
 perkinelmerelm  Perkin Elmer
 (ELM) 
$5,200  PM ~ 0.0    
 purpleair   PurpleAir 
  (PA-I) 
$150  PM1.0 0.93 to 0.95 0.95 PDF
(1,072 KB) 
PM2.5  0.90 to 0.92 0.99
PM10  0.32 to 0.44 0.97
purpleairpa-i-indoor  PurpleAir
(PA-I-Indoor) 
$180 PM1.0 -    
PM2.5  0.75  
 PM10 0.36 to 0.46  
 purpleair-ii  PurpleAir
(PA-II)
$200  PM1.0  0.96 to 0.98 0.99 PDF
(1,328 KB) 
PM2.5  0.93 to 0.97 0.99
PM10  0.66 to 0.70 0.95
 rtimicropem RTI
 (MicroPEM) 
$2,000  PM2.5 0.65 to 0.90 0.99  PDF 
(1,087 KB)
   sainsmart SainSmart
(Pure Morning P3)
$170   PM2.5 0.73 0.99  PDF
(1,186 KB)
 shinyeipmevalkit  Shinyei
(PM Evaluation Kit) 
$1,000  PM2.5 0.80 to 0.89 0.93 PDF
(1,156 KB) 
 speck  Speck
$150 PM2.5  0.32    
 tsiairassure  TSI
   
(AirAssure) 
$1,500 PM2.5   0.82 0.99 PDF
(5,647 KB) 
uhoo    uHoo   $300 PM2.5   ~ 0.0    

*The coefficient of determination (R2) is a statistical parameter measuring the degree of relation between two variables. Here, it measures the linear relationship between the sensor and the Federal Reference Method (FRM), or Federal Equivalent Method (FEM), or Best Available Technology (BAT) reference instrument. An R2 approaching the value of 1 reflects a near perfect correlation, whereas a value of 0 indicates a complete lack of correlation. All R2 values reported in these reports are based either on 5-min or 1-hr average data. The Lab R2 values are based on experiments conducted in the chamber, under average ambient conditions (20 degrees C and 40% RH). If a sensor has not demonstrated a good performance in the field, it may not advance to the laboratory chamber test. An ad-hoc rating system will be developed to summarize the overall performance of these sensors.

Disclaimer

All documents, reports, data, and other information provided on this website are for informational use only. The majority of sensors evaluated as part of the Air Quality-Sensor Performance Evaluation Center (AQ-SPEC) program were field-tested inside a custom-made aluminum enclosure to protect the sensors from windblown rain, harsh sunlight, and animals. The field evaluations reports included on this website contain data collected at our monitoring station during a specific 30- to 60-day period and may not be duplicated at the same or different location, season, time period, or weather conditions (e.g. temperature, relative humidity, pressure, wind speed/direction). As the overall sensor performance may be affected by the specific environmental conditions experienced at our location during the time of testing, replication and/or duplication may not possible to achieve. The laboratory evaluation was conducted in the AQ-SPEC’s environmental chamber with simulated pollutant and interferent concentrations that were generated from nebulizer solutions, dust dispensers, and gas dilution calibrators. Generated environments may not be able to fully replicate the conditions that may be experienced under ambient settings. The sensor assembly, installation, and use can also impact the reliability of the products evaluated by the AQ-SPEC program. South Coast Air Quality Management District (SCAQMD) makes no claim, warranty, or guarantee that these devices will or will not work when operated by other users for their specific applications.

The South Coast AQMD AQ-SPEC program in the Quality Assurance division of the Science and Technology Advancement office aims at providing information to and for the benefit of the public to make informed purchasing decisions on commercially available “low cost” air quality sensor devices. In accordance with this mission, the general policy of the Board of the Agency is to exclude from the AQ-SPEC website all commercial advertising and promotional material, including links which provide exclusive private or financial benefit to commercial, non-public enterprises and which do not promote or enhance a public benefit to the general public. As a government agency, the SCAQMD neither endorses nor supports individual private commercial enterprises through display of their products on the AQ-SPEC website or through providing links to the sites of such commercial enterprises.

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