Water Analytical Tests

Pb. This test method determines the concentration of lead by utilizing an acid digestion and determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

Mg. This test method determines the concentration of magnesium by utilizing an acid digestion and determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

Mn. This test method determines the concentration of manganese by utilizing an acid digestion and determination by atomic absorption spectrometry (AAS). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

Ni. This test method determines the concentration of nickel in a water sample by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).The method has a detection limit of 0.005 mg/L.

NO3-N, NH4-N. This method involves the quantitative analysis of ammonium (NH4-N), nitrate (NO3-N) and nitrite (NO2-N) in water. The method has detection limits of approximately 0.05 mg/L for all analytes.

pH. This method quantifies water pH and is a measure of the relative acidity or alkalinity of the solution that is in equilibrium. It is a measure of the intensity of acidity or alkalinity, but does not indicate the relative buffering capacity of water. pH is measured to access irrigation water chemical properties, crop and soil suitability. The method is generally reproducible within ± 0.05 pH units.

PO4-P (soluble P). This test determines the amount of phosphate phosphorus in water. The method has a detection limit of 0.05 mg/L.

K. This test method determines the concentration of potassium in a water sample by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).The method has a detection limit of 0.05 mg/L.

Se. This method determines the amount of selenium in a sample. Samples are digested using perchloric and sulfuric acids. Values are determined Inductively-Coupled Plasma Emission Spectrometer (ICP-AES). The method has a detection limit of 0.5 ug/L.

Na. This test method determines the concentration of sodium in a water sample by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).The method has a detection limit of 0.1 mg/L.

Cd, Cr, Pb, Ni. This is a combined soluble heavy metals test.

K, Ca, Mg, Na. This is a combined package testing for several components of soluble salts.

S. This test method determines the concentration of sulfur by utilizing an acid digestion and determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

TDS. This method quantifies solids in water or wastewater samples using gravimetric analysis following oven drying.   Solids refer to matter suspended or dissolved in the water or wastewater and may affect water or effluent quality in adverse ways. Waters with high dissolved solids generally are of inferior palatability and may induce unfavorable physiological reactions in transient consumers. Solids analyses are important in the control of biological and physical wastewater treatment processes and for assessing compliance with regulatory agency limitations. The method has a detection limit of approximately 4 mg/L for TSS and 10 mg/L for TDS, TS and VSS. The results are generally reproducible within 10%.

TOC. This test determines the amount of total inorganic carbon in liquid samples. The method has a detection limit of 0.5 mg/L.