Frequently Asked Questions Of Eo Sterilization

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Publish Time: 2024-01-05 | Technical Lab Standards

Significance of Ethylene Oxide Residue Detection

Ethylene oxide (EO/EtO) is a powerful alkylating agent used to achieve total sterility in medical devices. However, its high toxicity and potential carcinogenicity necessitate precise EO residue detection. For manufacturers, verifying that residual levels meet safety thresholds is not just a regulatory hurdle—it is a critical patient safety mandate.

Regulated Products Requiring EO Testing

All disposable medical products sterilized via EO gas must undergo headspace gas chromatography analysis. Key products include:

Disposable Sterile Syringes
Blood Transfusion Sets
Sterile Urinary Catheters
Protective Masks & Clothing
Surgical Dressings
Implantable Delivery Devices
Plasma Separation Cups
Intravenous Infusion Sets
[Image: 实验室技术人员执行气相色谱法进行 EO 残留分析]

标准合规性

BOCON 设备和验证协议符合业界最严格的执行标准:

  • 国标/T 14233.1: 输液注射器具化学分析方法.
  • 国标/T 16886.7 (国际标准化组织 10993-7): 医疗器械生物学评价 – 环氧乙烷灭菌残留物.

技术方法论: 气相色谱法 (气相色谱)

这 气相色谱仪 是测量的标准设备 环氧乙烷残留量. 使用水作为萃取剂, 通过高精度气液平衡测定EO含量.

测试原理

使用 顶空气相色谱法, 从样品中提取EO. 一旦标准溶液达到平衡, 通过记录色谱图上的峰高或面积来测量气体浓度.

标准溶液制备

称重方法: 50向 mL 水注入约 6mL EO 气体. 精确重量确定为 0.100g$ 精度并稀释至 $1 \乘以 10^{-2}g/L$ 创建母版 标准储备溶液.

[Image: 环氧乙烷顶空气相色谱峰分析图]

优化周期以减少检测失败

虽然检测是强制性的, 从源头预防高残留更有效. 博康的 BCS系列环氧乙烷灭菌器 具有优化的真空吹扫和加热通气阶段. 通过减少 环氧乙烷残留量 在灭菌周期本身, 我们帮助制造商通过 气相色谱测试 更加一致并加速产品向市场的发布.

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