# 116 - Gas Sterilization, ETO, Pre-Conditioning, Materials, Different Gases, Bioburden, Validation, and Safety with Jeanne Moldenhauer

- Show: [Let's Combinate](https://hardwarepodcasts.com/podcast/lets-combinate)
- Published: 2023-12-27
- Length: 39m
- Page: https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v
- Listen: https://podcasters.spotify.com/pod/show/letscombinate/episodes/116---Gas-Sterilization--ETO--Pre-Conditioning--Materials--Different-Gases--Bioburden--Validation--and-Safety-with-Jeanne-Moldenhauer-e2dldjp

## Summary

Jeanne Moldenhauer, a sterilization expert, explains the mechanics of gas sterilization, emphasizing that penetration requires gas-permeable packaging like Tyvek rather than hermetic seals. She details the process involving preconditioning, gas exposure, and critical aeration to remove toxic residuals, particularly for Ethylene Oxide (ETO). The discussion covers various gases including ETO, VHP, chlorine dioxide, and ozone, highlighting safety risks, OSHA regulations, and validation strategies like half-cycle qualification to ensure sterility assurance levels.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=0) Introduction: Jeanne Moldenhauer and Gas Sterilization Overview
- [1:54](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=114) Applications and Material Permeability Constraints
- [5:38](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=338) Comparison of Gases: ETO, VHP, Chlorine Dioxide, and Ozone
- [7:20](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=440) Safety, Environmental Risks, and OSHA Regulations
- [14:13](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=853) The Gas Sterilization Process Cycle and Equipment
- [18:24](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=1104) Safety Measures, Handling, and Storage of Gases
- [25:37](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=1537) Validation, Bioburden, and Half-Cycle Qualification
- [35:24](https://hardwarepodcasts.com/podcast/lets-combinate/2023-12-27-116-gas-sterilization-eto-pre-conditioning-materials-different-gases-bioburden-v#t=2124) Gas Sterilization in Combination Products and Density

## Topics

- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Certification & compliance](https://hardwarepodcasts.com/topic/certification-and-compliance)
- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)
- [Medical & health devices](https://hardwarepodcasts.com/topic/medical-devices)

## Most relevant to

early-stage companies

## Mentioned

- Tyvek (material)
- Ethylene Oxide (other)
- VHP (other)
- Chlorine Dioxide (other)
- Ozone (other)
- USP 1229 (other)

## Related episodes from other shows

- [Essentials of Sterilization for Med Device Professionals](https://hardwarepodcasts.com/podcast/global-medical-device-podcast/2023-01-26-essentials-of-sterilization-for-med-device-professionals) (Global Medical Device Podcast)
- [S6E51 Eric Richins | What It's Like Being A Packaging Engineer](https://hardwarepodcasts.com/podcast/being-an-engineer/2025-12-19-s6e51-eric-richins-what-its-like-being-a-packaging-engineer) (Being an Engineer)

## Citing this page

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