凯氏定氮解决方案
 | A concept to provide maximum flexibility
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Steam distillation is a key step in analytical processes in a broad range of laboratories. Buchi Kjeldahl Solutions are a flexible concept which reflects this variety and supports analytical labs in solving their specific analytical problems. A comprehensive package of support and services rounds off the offering.
IR and block digestion
Digestion systems are used to convert nitrogen containing substances (e.g. proteins) in a sample (e.g. milk) into the appropriate form of nitrogen. Beyond classical Kjeldahl digestions, additional applications such as the determination of COD (Chemical Oxygen Demand) can be carried out with the block digestion system.
During the digestion process, acid fumes and reaction gases may emerge. A scrubber is connected to the digestion system for neutralizing acid fumes and adsorbing unpleasant odors.
Distillation and titration
Digested samples can be processed directly in one of Buchi’s high-efficiency distillation units. The range of applications includes classical Kjeldahl tasks such as TKN (Total Kjeldahl Nitrogen) or Devarda as well as the direct distillation of other volatile components such as alcohol, sulfur dioxide, phenol, volatile acids, TVBN (Total Volatile Basic Nitrogen), formaldehyde and cyanide.
Reflecting different automation requirements, some distillation units actually combine the distillation step with the determination, for example by titration. The product range features an expandable distillation unit with the option of connecting it with a titrator of your choice as well as an automated unit with integrated titration.
Wet digestion
The B-440 Wet Digester allows an ecological preincineration of your samples. Sulfated ash determination is a standard test method with a broad range of applications in pharmaceutical production, food quality control, environmental testing and many other areas.
适用于不同应用场合的创新型解决方案
在各种应用场合中，蒸汽蒸馏是分析过程中的关键步骤。 可根据凯氏方法和 Devarda 方法测定氮和蛋白质含量。对于其它蒸汽不稳定性物质成分，诸如酒精、二氧化碳或苯酚的测定，在其工作流程中全部集成有这一中心步骤，当然同时还需要其它一些差异相当大的补充步骤。
步琪凯氏定氮解决方案提供了非常灵活的概念，支持解决特定分析过程中的问题。 并向您提供丰富的支持和服务。
步琪凯氏解决方案的基本要素
集成工作流包
步琪公司为您的整个分析流程提供仪器设备，从样品制备和消解到蒸馏和分析。 因而所有这些相互匹配的部件可以整合成一个完整的、高效的系统
全系列产品
消解和蒸馏已是非常全面的技术，广泛的使用在各种应用场合。 另外，自动化程度也实现了最优化。我们的凯氏定氮系列产品，是为匹配这种通用性而专门设计的。
针对专门应用的附件
步琪仪器的设计均符合官方颁布的方法和标准，如 AOAC、EPA、ISO 和 DIN。 另外，还可根据需要提供专用模块，例如化学需氧量(COD)测定模块，Devarda 法模块，用过氧化氢溶解硫酸等模块，可增加采用过氧化氢的硫酸消解或水、废水、土壤、土壤和淤泥中酸溶金属的回收，提供要求的配置。
应用和操作支持，以及技术支持
步琪仪表可靠、坚固、安全 另外，我们高素质的支持和服务专家随时恭候您的垂询。 瑞士步琪公司涉足凯式定氮应用已达 40 年。 期间，我们一直保持玻璃仪器技术的领先地位，玻璃仪器是凯式定氮和相关实验室的主根要部件。
- 步琪凯氏定氮解决方案： 集成工作流包
