XRF Sample Prep Essentials: Pressed Pellets, Fused Beads, Liquids & Metals, XRF Sample Prep: The #1 Way to Reduce Error (Pressed Pellets, Fused Beads & More), Stop Losing Accuracy in XRF: Essential Sample Prep for Powders, Liquids, Polymers & Metals

Most XRF errors happen before the spectrometer. Nick Kleise walks through the critical prep choices that control uncertainty—homogeneity, contamination‑free tools, and representativeness—from grinding vessels and splitting through pressed pellets vs. fused beads, liquid cups/films, polymer hot pressing, and metal surface prep. Learn how to pick film types and thickness, avoid contamination, and match your calibration route for robust, reproducible results.

What you’ll learn

– Where uncertainty actually comes from: sampling & prep dominate; instrument is a smaller slice.
– Choosing mills & vessels without contaminating target elements (carbide, steel, zirconia considerations).
– Pressed pellets vs. fused beads—when to choose which.
– Liquids: cup geometries, film selection (Mylar/PP/Cepastion) & “infinite thickness.”
– Polymers & metals: pellet thickness, hot‑press tips; sanding vs. milling to avoid smearing.
– Calibrate with standards that match matrix and prep route.

Need help optimizing your prep route? Contact our specialists or explore our application packages and synthetic CRMs.

00:00 Introduction
00:13 Why Sample Preparation Matters
00:35 The Analytical Chain (Sampling → Prep → Measurement)
01:13 Three Essentials: Homogeneity, Contamination, Representativeness
01:42 Grinding & Milling Tools
02:02 Avoiding Contamination (Vessel Materials)
02:23 Sample Mass & Splitting
02:48 Pressed Pellets vs Fused Beads
03:51 Preparing Liquid Samples
05:07 Preparing Polymer Samples
05:44 Preparing Metal Samples
06:57 Understanding Matrix Effects
07:31 Summary & Key Takeaways
08:18 Closing & Thank You

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