From Speck to Source: What Exactly Is a "Black Speck?"

When a black speck shows up in a surgical tray, the first question is simple: "What is it?" But as many Sterile Processing teams discover, the answer is anything but straightforward. On this episode of "What the Speck?," global reprocessing expert Dr. Gerhard Kirmse from Aesculap joins us to explore the science of identifying this pesky, unidentified debris and to tackle the question at the center of the mystery: "What exactly is a black speck?" From microscopic analysis and lab testing to on-site investigations inside washers, sterilizers, and steam systems, Dr. Kirmse explains how experts piece together the clues to uncover the real source behind these particles. Tune in to discover how science, collaboration, and a little detective work come together to solve one of SPD's most frustrating mysteries. Over the next 6 weeks, this series dives into one of sterile processing's most frustrating challenges—black specks. From water and steam quality to department culture, risk assessments, and root cause analysis, we're digging into every angle to uncover real answers (and real solutions) for your SPD. A special thanks to our sponsor, Aesculap®, for supporting this podcast series!

You can listen to From Speck to Source: What Exactly Is a "Black Speck?" online on Radio and Podcast. Open the player on this page to stream the available audio.

From Speck to Source: What Exactly Is a "Black Speck?" is an episode from Beyond Clean Podcast by Beyond Clean Media.

This episode is 31:10 long.

This episode was published on Apr 8, 2026.

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