从生物技术，HPLC，分析实验室，石油和天然气勘探和石化的行业应注意维护和清洁不锈钢关键流动路径。清洁良好的表面将影响产品质量，实验室结果，产量甚至环境合规性。
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在某些行业中cleaning stainless steelcan be as simple as blowing the surface off with a damp rag or compressed air. In other industries, such as stack sampling GC or HPLC chromatography or environmental sampling, it is crucial to assess the solvent to confirm it leaves no trace contaminants on the surface which can result in false positive results or analyte adsorption.
必须清洁整个系统以充分利用清洁的流动路径。这不仅是清洁样品缸或不锈钢管，调节器，配件或阀门的问题。只能通过清洁整个系统来实现最佳性能。在分析系统中清洁阀门，管道和配件是毫无意义的，然后将脏样缸的内容物排入流道中。
So here are a few tips on维护和清洁不锈钢表面:
维护
- Resurface as needed
随着时间的流逝，油漆剥落，道路会得到锅孔，家具需要抛光；大多数表面都需要某种维护。下次您沿着那条车辙的道路行驶时，请考虑一下您的关键流道 - 我敢打赌它也需要维护。
- Don't steam clean
Steam cleaning is not a good idea, no matter what your surface. Particulates normally found in live steam will deposit on your surface, which will contaminate your process or sample.
- Set a regular surface maintenance schedule
You do equipment preventative maintenance, why not PM your critical flow paths?
- Don't abrade or change surface roughness
A rough surface can trap contaminants and increase unwanted surface interaction.
打扫
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You don't need to see goop dripping out of a critical flow path to realize it needs to be cleaned. Set a cleaning schedule and learn the signs of surface contamination.
Signs you may need to clean the surface are:
- A film or other contamination on the surface
- 年龄
- 过程污染
- 腐蚀
- 峰值或峰失真的损失，实验室结果不佳
- Calibration problems
- 颗粒
如何清洁表面
将溶剂与污染物匹配至关重要：
- Polar solvent for reactive contaminants
- Non polar solvent for hydrocarbon removal
使用最不侵略性，最有效的高纯度溶剂来最大程度地减少损害或污染表面的风险。
Common effective solvents are:
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- Mild sonication
- Methanol/IPA
- Dichloromethane
- Acetone
- Water
清洁方法
Research industry publications for best practices, and develop your own written method to guarantee consistency. Different industries have different approved清洁方法。A valuable resource for establishing baseline cleaning criteria in a number of industries is the Compressed Gas Association CGA G-4.1.
This information has been sourced, reviewed and adapted from materials provided by SilcoTek.
For more information on this source, please visit西尔科特克。