Sample Type: Aqueous Test Method Description Default Detection Limit Sample No 1-3 Heavy metals, dissolved, trace As,Cd,Cr,Cu,Ni,Pb,Zn 0.45µm Filtration, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.00005 - 0.0010 g/m3 1-3 Filtration, Unpreserved Sample filtration through 0.45µm membrane filter. - 1-3 pH pH meter. APHA 4500-H+ B 23rd ed. 2017. Note: It is not possible to achieve the APHA Maximum Storage Recommendation for this test (15 min) when samples are analysed upon receipt at the laboratory, and not in the field. Samples and Standards are analysed at an equivalent laboratory temperature (typically 18 to 22 °C). Temperature compensation is used. 0.1 pH Units 1-3 Acidity (pH 3.7) Titration to pH 3.7 with s tandard sodium hydroxide solution, bromophenol blue indicator. APHA 2310 B 23 rd ed. 2017. 1.0 g/m3 as CaCO3 1-3 Total Alkalinity Titration to pH 4.5 (M-alkalinity), autotitrator. APHA 2320 B (modified for Alkalinity <20) 23rd ed. 2017. 1.0 g/m3 as CaCO3 1-3 Electrical Conductivity (EC) Conductivity meter, 25°C. APHA 2510 B 23rd ed. 2017. 0.1 mS/m 1-3 Dissolved Aluminium Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.003 g/m3 1-3 Dissolved Antimony Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.0002 g/m3 1-3 Dissolved Barium Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.005 g/m3 1-3 Dissolved Calcium Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.05 g/m3 1-3 Dissolved Cobalt Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.0002 g/m3 1-3 Dissolved Iron Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.02 g/m3 1-3 Dissolved Magnesium Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.02 g/m3 1-3 Dissolved Manganese Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.0005 g/m3 1-3 Dissolved Mercury 0.45µm f iltration, bromine oxidation followed by atomic fluorescence. US EPA Method 245.7, Feb 2005. 0.00008 g/m3 1-3 Dissolved Molybdenum Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.0002 g/m3 1-3 Dissolved Potassium Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.05 g/m3 1-3 Dissolved Selenium Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.0010 g/m3 1-3 Dissolved Silver Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.00010 g/m3 1-3 Dissolved Sodium Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.02 g/m3 1-3 Dissolved Strontium Filtered sample, ICP-MS, trace level. APHA 3125 B 23 rd ed. 2017. 0.0005 g/m3 1-3 Dissolved Uranium Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.00002 g/m3 1-3 Dissolved Vanadium Filtered sample, ICP-MS, trace level. APHA 3125 B 23rd ed. 2017. 0.0010 g/m3 1-3 Sulphate Filtered sample. Ion Chromatography. APHA 4110 B (modified) 23rd ed. 2017. 0.5 g/m3 Lab No: 2925270-SPv1 Hill Laboratories Page 2 of 2 Carole Rodgers-Carroll BA, NZCS Client Services Manager - Environmental These samples were collected by yourselves (or your agent) and analysed as received at the laboratory. Testing was completed between 23-Mar-2022 and 30-Mar-2022. For completion dates of individual analyses please contact the laboratory. Samples are held at the laboratory after reporting for a length of time based on the stability of the samples and analytes being tested (considering any preservation used), and the storage space available. Once the storage period is completed, the samples are discarded unless otherwise agreed with the customer. Extended storage times may incur additional charges. This certificate of analysis must not be reproduced, except in full, without the written consent of the signatory.
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