Residual Testing

Residual testing is a critical quality control process for medical devices, ensuring that no harmful manufacturing residues remain on products before they reach patients. These residues—including inorganic compounds, organic contaminants (such as fats, oils, surfactants, and alcohols), total hydrocarbons (THC), total organic carbon (TOC), particulate matter, and sterilization residues (e.g., ethylene oxide (EO) and ethylene chlorohydrin (ECH))—can pose serious risks, such as toxicity, inflammation, or device malfunction. Regulatory agencies like the FDA, ISO, and EU MDR mandate rigorous residual testing to ensure biocompatibility (ISO 10993), patient safety, and compliance with Good Manufacturing Practices (GMP).

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Meditronics (a brand of STEMart) provides comprehensive residual testing in compliance with ISO 10993, USP <467>, ASTM, and ICH guidelines, utilizing state-of-the-art analytical techniques to detect and quantify contaminants.

Inorganic Compounds Testing

Detects heavy metals (Pb, Cd, Hg, As) and other inorganic residues from manufacturing processes.

Organic Compounds Testing

Identifies lubricants, cleaning agents, and processing aids that may remain on devices.

Ethylene Oxide (EO) & Ethylene Chlorohydrin (ECH) Residues Testing

Quantifies sterilization residues that may be cytotoxic or carcinogenic.

Particulate Residues Testing

Evaluates microscopic particles, fibers, or debris that could cause inflammation or blockages

To ensure the accuracy and reliability of residual testing, Meditronics employs advanced analytical techniques tailored to detect specific contaminants in medical devices. Below is a detailed breakdown of the key methods used:

Inductively Coupled Plasma Mass Spectrometry (ICP-MS): Detects heavy metals (Pb, Cd, Hg, As) and inorganic residues.
Fourier-Transform Infrared Spectroscopy (FTIR): Identifies organic residues (oils, fats, polymers, and cleaning agents).
Gas Chromatography-Mass Spectrometry (GC-MS): Detects volatile organic compounds (VOCs), ethylene oxide (EO), ethylene chlorohydrin (ECH), and residual solvents.
Total Organic Carbon (TOC) Analysis: Measures carbon-based residues (THC, TOC) from cleaning agents or packaging materials.
High-Performance Liquid Chromatography (HPLC): Measures non-volatile organic residues, surfactants, and degradation products.
Scanning Electron Microscopy with Energy-Dispersive X-ray Spectroscopy (SEM/EDX): Detects particulate residues, foreign materials, and elemental composition.

Why Choose Meditronics?

Meditronics delivers unmatched expertise, regulatory compliance, and cutting-edge technology to ensure the safety and efficacy of medical devices:

✔ Regulatory-Compliant Testing

Full compliance with FDA, EU MDR, ISO, and USP standards.

✔ Customized Testing Solutions

Tailored protocols for implants, surgical tools, drug delivery systems, and packaging.

✔ Fast & Reliable Reporting

Detailed reports for regulatory submissions (510(k), PMA, CE Mark).

✔ End-to-End Support

From material selection to post-market surveillance.

Residual contamination can compromise device performance, patient safety, and regulatory approval. Meditronics's comprehensive residual testing services help manufacturers mitigate risks, ensure compliance, and accelerate time-to-market.

Contact Meditronics today to discuss your medical device testing needs!

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