ETC is accredited with the National Association of Testing Authorities (NATA) for an extensive range of air emission testing methods. Most of these are standard AS, USEPA and ISO methods.
ETC is also accredited by NATA for many of the specific test methods required in different states within Australia. These include prescribed test methods (TM) and other approved methods (OM) required in NSW, as well as South Australian EPA methods.
The full list of ETC's current NATA accredited testing capabilities can be found on the NATA web site www.nata.asn.au, however, a summary of our core capabilities are listed below.
| Flow rate, temperature and velocity | USEPA Method 2, ISO10780 |
| Particulate matter | USEPA Method 5, USEPA Method 17, AS4323.2 |
| PM10 | USEPA Method 201A |
| Odour | AS4323.3 |
| Volatile organic compound (VOC) | USEPA Method 18 |
| Nitrogen oxides (NOx) | USEPA Method 7E, USEPA Method 20 |
| Carbon monoxide (CO) | USEPA Method 10 |
| Carbon dioxide (CO2) | USEPA Method 3A |
| Oxygen (O2) | USEPA Method 3A |
| Sulphur dioxide (SO2) | USEPA Method 6, USEPA Method 6C |
| Sulphur trioxide (SO3) and sulphuric acid mist (H2SO4) |
USEPA Method 8 |
| Halides (e.g. chlorides and fluorides) | USEPA Method 26, USEPA Method 26A |
| Metals | USEPA Method 29 |
| PAH's | CARB 429, USEPA Method 23, SW846-0010 |
| Dioxins and Furans | USEPA Method 23 |
| Total organic compounds (TOC) | USEPA Method 25A |
| Aldehydes and ketones | SW846-0011 |
