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Draft Method 1633 is not the Only Option for Analyzing PFAS in Non-Potable Water and Solids

December 2023

Many of our recent discussions around PFAS testing options involve Draft Method 1633. The most recent version, Draft 4, was published in June of 2023 and is considered “final” for wastewater, surface water, and groundwater. The EPA forecasts that the method will be finalized this December, 2023.

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10 Tips for Proper Shipping of USP 797 Samples

The 2023 revisions to USP <797> increase compliance requirements for compounding pharmacies. Following proper handling and shipping procedures for lab media can help ensure all that extra effort doesn’t go to waste. Here are ten tips for ensuring your gloved fingertip and surface samples arrive safely.

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Webinar Recap: What Do the Proposed PFAS MCLs Mean for You?

Whenever The United States Environmental Protection Agency (EPA) comes out with a new PFAS regulatory proposal, we inevitably get a lot of questions. The National Primary Drinking Water Regulations (NPDWR) proposed for PFAS on March 14th were no exception. While the EPA held a couple of informational webinars that were highly informative, the Pace® PFAS Team wanted to offer some clarity as well.

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USP 797 BUDs: How the 2023 Changes Impact Environmental Monitoring Requirements

In November 2023, significant revisions to the United States Pharmacopeia (USP) General Chapter <797> will go into effect, bringing critical updates to the environmental monitoring standards governing the compounding of sterile preparations. In this post, we delve into the changes to USP 797 BUD standards and how they impact environmental testing requirements.

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Get Ready for A Stack Test – The Planning Phase

Stack testing, also called performance testing or emissions performance testing, is a procedure for sampling various types of emission sources at a facility. It is a critical tool to determine compliance with U.S. Clean Air Act regulations, state regulations, and air permits. It also provides real-world data for emission inventories and air quality modeling.

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What Can Impact Vapor Intrusion Investigations?

An Interview with Chris Johnson, Product Manager - Air


Did you know that testing has shown certain tubing and other sampling media can potentially emit or adsorb VOCs which may impact the results of vapor intrusion (VI) testing? This becomes important when sub-ppbv reporting limits are required for soil gas sampling to risk-based screening levels. To meet the risk assessment goals of soil gas samples, Pace® is often required to report compounds of concern down to the part per billion ranges or lower.

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