Guy P. K. Kong

Laboratory Manager

Contact Me

ETL’s Chemical division provides a full range of chemical analyses for environmental, metal, petroleum products in soil, cement, concrete and its related materials.  With over 20 years experience, we provide testing services for water supply pipes & fitting and solder materials, according to the WSD requirements, and is one of the few HOKLAS accredited laboratories in Hong Kong for chemical analysis of copper alloy and solder alloy.


Providing fast and accurate chemical composition analysis for steel and copper alloy (HOKLAS method (spark-OES)), our Chemical division attained accreditation from the WSD Approval Laboratory for Heavy Metal Water Testing in December 2015.


For further information or to receive a quote, please contact the Chemical team

Water Fittings
  • Chemical Composition of Copper Pipe & Fitting

  • Chemical Composition of Soldering Material

Metal & Alloy Analysis
  • Chemical Composition of Metal & Alloy, e.g.  Stainless Steel, Steel, Copper Alloy, Aluminium Alloy etc.
Diesel Oil
  • Sulphur Content of Diesel Oil
Construction Materials
  • Chemical Composition of Cement

  • Chemical Composition of Concrete

  • Chemical Composition of Soil

  • Chemical Composition of Mortar

  • Chemical Composition of Aggregate

Job Reference

Chemical Analysis of Stainless Steel

Date: April 2023

Division: Chemical

Project: Material Testing of Stainless Steel Water Pump (2022/2023)

Client: Hong Kong Housing Authority

Chemical Test for Concrete

Date: May 2023

Division: Chemical

Project: Concrete Chip at Kowloon Bay Deport

Client: MTR Corporation Ltd.

Water Fittings

Date: January 2023 to present

Division: Chemical

Project: Testing Services on Filtering Efficiency of Water Filter

Client: Water Supplies Department

Chemical Analysis of Soil

Date: January 2023 to present

Division: Chemical

Project: In-situ & Laboratory Test Work (Term Contract 2023)

Client: Lam Geotechnics Ltd.