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EPA VOA Vials To be used for environmental analysis, EPA vials must be clean and free of substances that might influence the analysis. Glass Vials that meet these requirements are called EPA vials, or sometimes VOA (volatile organic analysis) vials. Aijiren flat bottomed EPA vials are available in 20, 30, 40 and 60ml sizes, suitable for water or soil samples. 2 mL Screw Top Vials & Screw Caps, 2 mL Glass Vials | Aijiren Aijiren’s 2 mL screw top vials are constructed from Type 1 bor...

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Nitrogen – Water Quality Parameter Overview and Products Nitrogen is a chemical element with the symbol N, the atomic number of 7, and the atomic mass of 14. It can occur in a diatomic molecular form (N 2) as a colorless gas and be a part of a liquid or solid compound. About 78% of the Earth’s atmosphere is composed of a gaseous form of nitrogen making it the most abundant uncombined element. Volatile Organic Compunds – Eurofins Scientific Sampling for Volatile Organic Compo...

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