Apex Emission Testing & Unergy (Pty) Ltd, are moving with the times.

Initially established by Jason Joubert in 2005, with partial funding from two occupational hygienists, Apex Emission Testing has seen exponential growth from 2007, when the occupational hygienists were bought out, to now.

During that decade, Apex Emission Testing saw continuous growth, to become one of the leading stack emission compliance monitoring "test houses" in Southern Africa.

But the time has come for a "changing of the guard", and although Apex Emission Testing recently obtained SANAS Accreditation to ISO 17025 (January 2017), the time is right for the formation of a strategic alliance with Unergy (Pty) Ltd.
This alliance was brokered, not only to transition the exit of Jason Joubert from stack emission tests, but also to better serve the outcomes and objectives of the new BBBEE Codes of Good Practice, as this alliance potentially enables all of Apex Emission Testing's previous stack emissions testing projects, to now be completely handled by the 100% black owned entity, Unergy (Pty) Ltd.

It is thus, that I encourage my loyal clients to assist in the smooth transition from ourselves to Unergy (Pty) Ltd, as your preferred stack emission testing service provider.

Please view "Our Services" for ApexET & Unergy "Service Divisions".

Please contact:

Jason (jason(at)apexet.co.za), or
Jenni (jenn(at)apexet.co.za) for all
Apex Instruments Equipment, Remote Sensing, GIS, Emissions Modelling, NAEIS and Data Analysis related queries.


Ruth from Unergy (ruth(at)unergy.co.za), for all stack emission testing quotes and enquiries

Apex Emission Testing maintains associations with the following organisations:


Divisional Designations of Services

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Desktop Quantification Assessments and Air Quality Compliance Administration

    Quantification & Identification Services
  • Desktop Quantification of Emissions from Bulk Liquid Storage Tanks using Computer Modelling
  • Desktop Quantification of Emissions from Combustion and Industrial Processes using Emission Factor and Mass Balance Calculations
  • Dust Fallout Source Identification - Multivariate Analysis to quantify likelihood of the source of fallout dust.
  • Screening Level Dispersion Modelling - US EPA Screen 3 Computer Model.

  • Health Risk Assessments
  • Specialist Health Risk Assessment's and Reporting

  • Data Analytics & Assessment - Let us analyse your data
  • Independent Report Assessments - let us assess your stack emission test supplier's report (QA and/or Conflict resolution)

  • Regulatory
  • Atmospheric Emission Licence (AEL) Applications and Amendments.
  • NAEIS /SAAELIP - Preparer/Consultant Services..

  • Geographic Information Science & Remote Sensing
  • NEW SERVICE: Air Pollution and Air Quality Assessments using Remote Sensing Data supplied by International Space Agencies

Sampling Equipment Sales and Training

Apex Emission Testing is a proud Distributor of Apex Instruments Inc. (NC, USA) instrumentation and software - Contact us for details, or...
see the Apex Instruments Inc. website www.apexinst.com

Isokinetic Sampling Services (Particulates, Aerosols and Mists)
In association with

Apex Emission Testing, in association with Unergy, utilises US EPA Sampling Methodology to accurately determine concentrations and mass flow rates for any of the following process, or combustion, related parameters:

  • Temperatures and Pressures (static and velocity),
  • Stack gas molecular weight,
  • Stack gas moisture content,
  • Volumetric flow rates.

Concentrations and mass flows of:
  • Acids (Organic and Inorganic),
  • Dioxins and Furans (PCDD/PCDF),
  • Metals (Antimony (Sb), Arsenic (As), Barium (Ba), Beryllium (Be), Cadmium (Cd), Chromium (Cr), Cobalt (Co), Copper (Cu), Lead (Pb), Manganese (Mn), Mercury (Hg), Nickel (Ni), Phosphorus (P), Selenium (Se), Silver (Ag), Thallium (Tl), Zinc (Zn))
  • Oil Mists (Vegetable, Mineral etc.),
  • Particulates (PM2.5, PM10 and Total PM)

Non-isokinetic Sampling Services (Gases and vapours)
In association with

  • Ammonia (NH3)
  • Carbon Dioxide (CO2)
  • Carbon Monoxide (CO)
  • Fluorides (Total F as HF)
  • Hydrogen Sulphide (H2S)
  • Nitrous oxide (NO)
  • Nitrogen Dioxide (NO2)
  • Polycyclic Aromatic Hydrocarbons (PAH's)
  • Sulphur Dioxide (SO2)
  • Volatile Organic Compounds (VOC's)

Other Services In association with

  • Diesel Exhaust Emissions Opacity Testing
  • Ambient Environmental Monitoring Services
  • Dustfall / Dust Deposition (ASTM Method)
  • Ambient Gaseous Concentrations

Useful Resources

US EPA Documents and Methods

Promulgated Test Methods
Proposed Test Methods
Approved Alternative Test Methods
EMC Conditional Test Methods
Preliminary Test Methods
EPA Quality Assurance Handbooks
EPA Emission Measurement Center Technical Support
EPA Emission Measurement Center Directory
EPA Emission Measurement Center Information Documents
CARB Test Methods (California Air Resources Board)
Test Methods for Evaluating Solid Waste (SW-846) Air Pollutants
Continuous Emission Monitoring
Performance Specifications and Other Monitoring Information

Other Agencies

NIOSH Manual of Analytical Methods
OSHA Analytical Methods
ASTM Standards
WHO World Health Organisation
ISO International Organization for Standardisation
SANAS South African National Accreditation System
UKZN DOEH University of Kwazulu Natal, Dept. of Occupational & Environmental Health
NACA National Association for Clean Air
IOSH Institution of Occupational Safety and Health
SAIOSH South African Institute of Occupational Safety & Health
DEA Department of Environmental Affairs