EPA Methods - Monitoring and Testing Information

Articles & Whitepapers

phx42 Instrument: A Reliable Solution for Meeting Method 21 Requirements

Method 21 and the phx42 Leak detection is an essential part of environmental compliance in many industries, and complying with regulations can be challenging. Method 21 is a commonly used EPA method for leak detection, and there are instruments available to help comply with the method, such as the phx42. In this blog post, we will compare the requirements of Method 21 to the capabilities of the ...

What To Expect During an LDAR Program Audit

Many different local and state laws enforce emission regulations concerning leak-prone equipment. These laws include the New Source Performance Standards (NSPS), State Implementation Plans (SIPs), ...

Screening for per- and polyfluorinated alkyl substances (PFASs) in water

Per- and polyfluorinated alkyl substances (PFASs) are the class of almost 10,000 manmade organofluorine compounds more commonly known as «forever chemicals». PFASs are resistant to water, oil, and heat. Due to their unique properties, ...

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NOx Converter Tester

The Sonimix 2130 NOx converter tester has been designed to generate a stable NO2 concentration with a small reaction time. It is based on the sonic nozzles technology (ISO 6145-6 technology) and high stability pressure regulators. The NOx converter tester is often used together with a multi-steps gas divider also based on sonic nozzles and high precision pressure regulators. In order to validate ...