Environmental Laboratory Services
Testing the Waters
Environmental Monitoring
Page 2
Table of Contents
Introduction
Page 3
Chemical Analyses of Environmental Waters
Page 4
Ion Balances
Nutrient Analyses of Environmental Waters
Page 5
Nitrogen Species
Total Nitrogen
Total Kjeldahl Nitrogen
Organic Nitrogen
Inorganic Nitrogen
Ammonia
Unionised Ammonia
Phosphorus Species
Groundwater and Surface Water
Page 9
Biochemical Oxygen Demand
(Why 5 days?)
Total Organic Carbon
Microbiological Analyses
National Environment Standard
Page 11
Bathing Beaches
Page 14
Stormwater Runoff
Page 15
Contact Us
Page 16
Cover Photo: Hutt City sewer outfall at Pencarrow Head before completion of the sewage
treatment plant at Seaview.
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Introduction
Environmental Laboratory Services is one of New Zealand’s leading experts
in the areas of:
• Air quality monitoring
• Biological fluids
• Boiler water
• Ceramicware and metal food containers
• Environmental water
• Food and Dairy Products
• Landfills
• Legionella
• Meat industry services
• Metals
• Potable water for councils • Potable water for small communities
• Sample Integrity
• Sewage and effluent
• Swimming pools
• Trade waste
The company has its origin as part of the Hutt City Council Laboratory and
became a private enterprise in 1994. In 1998 the laboratory acquired the
Wellington City Council Laboratory. In September 2001, ELS further
expanded with the purchase of the Inorganic Chemistry section of AgriQuality
New Zealand. This section was previously part of ESR, which before that was
the DSIR.
We are based in a purpose built facility of 1450 m2 at 85 Port Road, Lower
Hutt. ELS is comprised of four separate laboratory areas – Instrumental
Chemistry, General Chemistry, Biological Fluids, and Microbiology. The latter
is further split into three separate rooms with clean, cleaner and ultra clean
capabilities. The ultra clean
lab
is used for pathogenic bacteria
determinations.
ELS is privately owned by scientific people committed to the science industry
in New Zealand. We continue to