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Parts Washing for Medical Device Manufacturing

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Magido Platinum PM400 rotary immersion aqueous parts washer — precision cleaning for medical device components

Cleaning medical device components is fundamentally different from cleaning automotive or industrial parts. The goal is not just removing contamination — it is proving you removed it, every time, with a process that is documented, validated, and repeatable. Regulators and customers require it. Quality systems demand it. And the consequences of a cleaning failure are categorically different in medical device manufacturing than in most other industries. This guide covers what validated aqueous cleaning means, what equipment it requires, and how Magido systems support medical device cleaning applications.

What Validated Cleaning Actually Means

Process validation in medical device manufacturing means demonstrating that your cleaning process consistently delivers a defined cleanliness result. For cleaning, this typically involves Installation Qualification (IQ) confirming the equipment is installed correctly and operating as specified, Operational Qualification (OQ) demonstrating the process operates within defined parameters across its expected range, and Performance Qualification (PQ) showing the process delivers acceptable results on actual production parts under real conditions. The aqueous washer is not just a tool — it is a controlled process element under FDA 21 CFR Part 820 and ISO 13485, and its parameters (time, temperature, spray pressure, chemistry) must be defined, monitored, and recorded.

Platinum Series — P600/2

Why Aqueous Cleaning Is the Standard

Solvent cleaning has largely been regulated out of medical device facilities for the same reasons it has retreated from other precision industries: VOC exposure limits, hazardous waste classification, and flammability concerns. Aqueous cleaning with validated detergent chemistry is now the dominant approach for metallic implant components, surgical instruments, and device subassemblies. The detergent chemistry must be compatible with your substrate materials and validated for bioburden reduction if the cleaning step is part of a sterilization preparation process. See our comparison of aqueous vs. solvent parts cleaning for a full breakdown of the differences.

Equipment Requirements for Medical Device Cleaning

Several equipment characteristics matter specifically for medical device applications. All wetted surfaces must be stainless steel — no painted carbon steel, no aluminum components in the wash zone that could shed particles or react with cleaning chemistry. Multi-stage rinsing is typically required, with a final deionized or purified water rinse stage to prevent ionic contamination on cleaned parts. The machine must deliver consistent, measurable parameters — temperature accuracy, spray pressure, and cycle timing — that can be logged as objective evidence for your validation records. Magido builds every washer entirely from AISI 304 stainless steel with no hidden carbon steel or painted surfaces anywhere in the wash zone.

Common Contaminants in Medical Device Manufacturing

Metallic implant components arrive from machining with cutting oil, coolant films, and metallic fines. Investment castings carry ceramic shell residue. Stamped components carry drawing lubricants and forming oils. Injection-molded components may carry mold release agents. Each contamination type requires specific detergent chemistry selection and may require different wash parameters to achieve validated cleanliness results. A free cleaning process evaluation from Magido helps you identify the right system and chemistry combination for your specific components before you begin the validation process.

Platinum Series — P900/2

Integrating Cleaning into Your Quality System

The cleaning step belongs in your Device History Record. That means recording the washer parameters for each lot, the solution concentration and temperature at time of cleaning, the detergent lot number, and the operator who ran the cycle. Some facilities accomplish this with manual logs tied to the batch record; others integrate washer outputs into their MES or electronic quality system. Either approach works as long as the records are complete, retained per your document control procedures, and traceable to the device lot. For more information on Magido systems for medical device manufacturing, visit our medical industry page or contact Scott Morin at 844-462-4436 or Sales@MagidoUSA.com. Magido rotary immersion washers and immersion washers are well-suited for validated medical device cleaning. Request a process evaluation.

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Magido offers free parts cleaning process evaluations.