知识

 

检测技术

AN-09 - 氢中的硫基化合物

用气相色谱法结合增强等离子体放电(Epd)技术对氢中含硫化合物样品进行了分析。结果表明,所有硫基化合物均可检出,检出限小于1ppb。

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EPD User Guide

Epd 用户手册

介绍了增强型等离子体放电检测器,不仅仅是一个检测器。

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AN-15: Trace Sulfur In Fuel-Grade H2 Wihtout SCD, FPD And Thermal Desorber. A Process GC Solution - KA8000Plus Test Report

The fuel-grade hydrogen mar-ket is currently booming. Stand-ards containing the maximum allowable concentration of im-purities in hydrogen were re-cently defined as well as laboratory oriented analytical methods. Currently, for ultra-trace sulfur analysis, a gas chromatograph based on a SCD detector is suggested by some standards for laboratory tests. However, the SCD de-tector is less than ideal for process use due to its size, re-quired maintenance and potential hazard due to the use of ozone and heated furnace. Another contender is the PFPD, but this detector is also difficult to use on the field and in-volves the use of a hazardous flame which is again not ideal with the presence of flammable hydrogen.

The KA8000Plus from KA Solutions, powered by ASDevices, has been selected as the preferred process-oriented solu-tion by Impact Scientific Instrument. All the components are high quality and the sensor, the SePdd, is very simple to use. It only involves the use of inert carrier gas and is solid state. Also, there is no need for a thermal desorber to con-centrate the sulfur impurities contained in the sample to achieve the 4 ppb LOD (Limit Of Detection) target defined as the current standard.

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阀门和接头

AN-05 - 吹扫密封阀

基于数十年来在色谱方法和阀门设计方面的专业知识,一个革命性的概念诞生了吹扫型密封阀(PLSV)。PLSV结合了最好的隔膜阀和锥形转子阀的优点,而没有任何缺点。

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AN-08 - A Quantum leap for chromatographic valve

AN-08 - 色谱阀技术的一个革命性飞跃

本应用说明展示了吹扫形密封阀(PLSV)的独特特性。

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AN-10 - 用于硫化物分析的 uInProve 色谱阀

众所周知,超痕量硫分析是一种困难的测量方法。需要特别考虑所有部件的惰性。为此,开发了特殊的涂层技术。色谱阀是惰性涂层性能不佳的一种部件。本文件说明了PLSV阀门技术的优点。

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AN-11 用氩代替氦作为载气测量小于1PPB级的新方法

本应用说明将提出一种新的测量方法,使用基于捕获和释放吹扫型密封阀的ASDevices预浓缩系统。该方法可简化色谱过程,提高各种基质中永久性气体的检出限。由于我们独特的专有纳米结构捕集材料和阀门基质放空功能,大多数基质可以轻松消除,而无需使用中心切割或反吹,从而提高了可靠性、显著节省了分析时间和硬件成本的节约。以氩气为载气和放电气体,可达到检测限在1ppb以下。氦的使用现在可以限制在要求在低ppt范围内特定的应用中。

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AN-13 - PLSV - 压降和死体积:PLSV阀和隔膜阀的比较

比较了PLSV阀技术和AFP-ELDV-2隔膜阀的测量结果,使用气相色谱/质谱仪测定挥发性有机化合物VOCs。第三方测试表明PLSV技术对于隔膜阀在压降和死体积方面的优势。

 

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Liplok: 一种改进了的仪表工业接头

这个详细的文档突出了我们LipLok 技术的优势.

 

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纯化技术

Brochure_iPaps_Digital

 iPaps 样本

 

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ASDPure 产品手册

 

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色谱柱

Brochure_ArDSieve

ArDSieve 样本

在色谱中分离氩和氧一直是困难的,因为这两种分子是共流出的,除非使用昂贵的装置在低温下操作。当需要从纯氧中分离出痕量ppb氩时,情况更是如此。

 

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OEM 色谱平台

N2Sense 样本 

 

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关于 ASDevices

Our Roots

溯源

与伊夫·加马奇的讨论。一个热衷于气体分析革命的发明家的故事 

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