text: Some available in situ measurement techniques include:
  * Aerosol mass spectrometer (AMS)
  * Differential mobility analyzer (DMA)
  * Electrical aerosol spectrometer (EAS)
  * Aerodynamic particle sizer (APS)
  * Aerodynamic aerosol classifier (AAC)
  * Wide range particle spectrometer (WPS)
  * Micro-Orifice Uniform Deposit Impactor(MOUDI)
  * Condensation particle counter (CPC)
  * Epiphaniometer
  * Electrical low pressure impactor (ELPI)
  * Aerosol particle mass-analyser (APM)
  * Centrifugal Particle Mass Analyser (CPMA)