OC/EC Archives - Thomson Environmental Systems https://thomsongroup.com.au/product-tag/oc-ec/ Wed, 18 Jun 2025 04:43:50 +0000 en-AU hourly 1 https://wordpress.org/?v=6.9 https://thomsongroup.com.au/wp-content/uploads/2022/03/cropped-TES_favicon-32x32.png OC/EC Archives - Thomson Environmental Systems https://thomsongroup.com.au/product-tag/oc-ec/ 32 32 SUNSET LABS OC/EC Aerosol Analyser https://thomsongroup.com.au/product/sunset-labs-ocec-aerosol-analyser/ Tue, 25 Sep 2018 20:05:41 +0000 https://thomsongroup.com.au/?post_type=product&p=16647 The Lab OC-EC Aerosol Analyser is the industry standard for environmental and workplace monitoring. This instrument uses a proven thermal-optical method to analyze for OC-EC aerosols collected on quartz filters. It is the basis for NIOSH Method 5040 and is fully compliant with the IMPROVE protocol. It features a new and improved microcontroller and data […]

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]]> The Lab OC-EC Aerosol Analyser is the industry standard for environmental and workplace monitoring. This instrument uses a proven thermal-optical method to analyze for OC-EC aerosols collected on quartz filters.
It is the basis for NIOSH Method 5040 and is fully compliant with the IMPROVE protocol. It features a new and improved microcontroller and data acquisition system for enhanced accuracy and precision. There is no comparable instrument on the market today.

In the Lab OC-EC Aerosol Analyser, samples are thermally desorbed from the filter medium under an inert helium atmosphere followed by an oxidizing atmosphere using carefully controlled heating ramps. A flame ionization detector (FID) is used to monitor the analysis. The proven low dead volume carrier gas control system and proprietary quartz oven design provide high sensitivity with ultra low carbon background and no oxygen contamination.

Download Specifications

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]]> SUNSET LABS Model-4 Semi-Continuous OC/EC Field Analyser https://thomsongroup.com.au/product/sunset-labs-semi-continuous-ocec-field-analyser/ Tue, 25 Sep 2018 20:00:45 +0000 https://thomsongroup.com.au/?post_type=product&p=16644 The Model-4 Semi-Continuous OC-EC Field Analyser features the latest advances in electronic and optical technology, and is rack mountable! This rugged and compact instrument offers sensitive and reliable field operation with an optimized oven and detector design. This rugged and compact instrument offers sensitive and reliable field operation with an optimized oven and detector design. […]

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]]> The Model-4 Semi-Continuous OC-EC Field Analyser features the latest advances in electronic and optical technology, and is rack mountable!

This rugged and compact instrument offers sensitive and reliable field operation with an optimized oven and detector design.

This rugged and compact instrument offers sensitive and reliable field operation with an optimized oven and detector design. Its access panel allows for easy filter service and calibration. New safety mechanisms and inline pressure regulators offer superior flow control.

his analyzer is perfect for:

  • Ambient air quality and environmental exposure measurements
  • Indoor air exposure assessment monitoring
  • Long-term environmental research such as studying the effects of regulatory changes
  • NIOSH exposure assessments in the workplace

This instrument is the only commercially available field deployable OC-EC analyzer with true laser-based pyrolysis correction and compatibility with accepted NIOSH 5040 and IMPROVE methods. It has a computer controlled flow system for enhanced sensitivity and fast analysis times. It also has a reduced need for support gases. The Model-4 Semi-Continuous OC-EC Field Analyzer has been extensively tested at several EPA super-sites and demonstrated excellent sensitivity, compared with other co-located integrated filter sampling systems.

Features

  • New smaller, lighter rack mountable design
  • Easy access panel for filter service and calibration
  • Analytical results comparable to NIOSH 5040
  • Analysis profiles easily selectable to match NIOSH, IMPROVE, STN or custom applications
  • Optimized photo detector and optical system
  • Minimum quantifiable levels of 0.5 μg C/m3 each of OC and EC
  • Improved NDIR detector with better temperature control and sensitivity
  • 16-Bit data acquisition system with embedded CPU control
  • Computerized flow controllers for all gasses
  • New inline pressure regulators for superior flow control
  • Precision tuned optical alignment for enhanced laser stability
  • Improved temperature control with superior cooling fan configuration to allow more online sampling time
  • New extended-life heating coils, with PID control algorithm for stable oven temperatures during analysis

Download Specifications

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