Air Discharge Monitoring
STNZ offers professional air quality monitoring services tailored to the clients needs.

Air Discharge Monitoring
STNZ specialise in air discharge monitoring of industrial point sources
STNZ employs the most advanced stack testing equipment in the market using the TECORA G4 fully automated isokinetic stack sampling train.

The advantages of using a fully automated stack sampling train include:

Source Testing NZ uses the next generation in stack testing equipment, the TECORA G4
STNZ are able to offer a wide range of test methods accredited by International Accreditation New Zealand (IANZ). In addition, STNZ works closely with the client to determine the most suitable methods for their particular needs. Presented below is the current scope of STNZ’s IANZ accredited methods.
The most current scope of accredited methods is available at www.ianz.govt.nz. Air Discharge Monitoring Methods are carried out in accordance with USEPA methods unless otherwise stated.
For further details on the USEPA test methods please visit www.epa.gov. You can find further information on the TECORA G4 on the TECORA web site (www.tecora.it).

Method 1:
Sampling and velocity traverses for stationary sources.
Method 2:
Determination of stack gas velocity and volumetric flow rate (type S Pitot tube) Including measurements using 3-D Pitot Tubes.
Method 3:
Gas analysis for the determination of dry molecular weight.
Method 4:
Determination of moisture content in stack gases.
Method 5:
Determination of particulate emissions from stationary sources (including analysis).
Method 6:
Determination of sulphur dioxide emissions from stationary sources (including analysis).
Method 7c:
Determination of nitrogen oxide emissions from stationary sources.
Method 8:
Determination of sulphuric acid mist and sulphur dioxide emissions from stationary sources (including analysis).
Method 0011:
Sampling for aldehydes and ketone emissions from stationary sources.
Method 16a:
Determination of total reduced sulphur emissions from stationary sources (including analysis).
Method 17:
Determination of particulate emissions from stationary sources (including analysis).
Method 18:
Measurement of gaseous organic compound emissions.
Method 23:
Determination of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans from municipal waste incinerators.
Method 26:
Determination of hydrogen halide and halogen emissions from stationary sources – non isokinetic method.
Method 26A:
Determination of hydrogen halide and halogen emissions from stationary sources –isokinetic method.
Method 29:
Determination of metals emissions from stationary sources.
Method 036:
Measurement of isocyanate compounds in stack emissions.
Method 201a:
Determination of PM10/2.5 emissions – constant flow rate method (including analysis).
AS 4323.1:
Stationary source emissions – selection of sampling position.


