Austdac Pty Ltd


Castle Hill Calibration Laboratory

Accreditation No.


Site No.


Date of Accreditation

24 Jun 1996


Unit 1, 42 Carrington Road
Castle Hill, NSW 2154


Mr Peter Chan P: +61 1800568984


Services available to external clients

Scope of Accreditation

Castle Hill Calibration Laboratory

ISO/IEC 17025 (2017)


  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
Chemical metrology - Gas analysers Gas analysers; Mine safety and confined space equipment Concentration Direct measurement by certified reference material in-house method 02-414-30 and manufacturers specifications Calibration in the laboratory or in the field (field does not include H₂S)


With Calibration and Measurement Capability of-
Methane - CH4 (Catalytic): 2.7% in the range 0.01-5 %vol/vol
Methane - CH4 (NDIR): 2.8% in the range 0.01-5 %vol/vol
Carbon monoxide - CO (Electrochemical): 2.9% in the range 0.1-1000 part per 106 vol/vol (ppm)

Carbon Dioxide - CO2 (NDIR): 4.9% in the range 0.01-5 %vol/vol
Hydrogen sulfide - H2S (Electrochemical): 4.2% in the range 0.1-200 part per 106 vol/vol (ppm)
Oxygen - O2 (Electrochemical): 2.7 % in the range 0.1-30 %vol/vol

The only data displayed is that deemed relevant and necessary for the clear description of the activities and services covered by the scope of accreditation.

Grey text appearing in a SoA is additional freetext providing further refinement or information on the data in the preceding line entry.