产品简介：

意大利VELP是世界知名的分析仪器制造商，VELP以其专业和创新力开发和生产了优良的机械和电子产品。VELP�?983年开始设计、生产各种实验室分析仪器。产品涵盖食品及饲料系列、搅拌器系列、环保分析系列等，为客户提供优质、合适的解决方案、�/p>

VELP杜马斯定氮仪——NDA701是VELP公司根据燃烧法开发出�?*的氮/蛋白质快速分析、测定仪！目前VELP是世界上**一家拥有凯氏方法和杜马斯方法定氮仪的公司，是整个分析仪器行业的开拓者！

技术参数：

功能	测定�?蛋白质含野�/p>
原理	高温燃烧
测定时间	仅需 3min
自动匕�/p>	全自动操佛�/p>
样品处理	无需样品处理
样品要求	均一性要求高
载气	He(氦气)
**样品野�/p>	微量分析
	1g
检测下陏�/p>	0.003mg
重现�?/p>	�?.5%
反应温度	1200ℂ�/p>
化学试剂	旟�/p>
环境污染	旟�/p>
N测定方法	TCD检测器
国标规定	食品及饲料中蛋白质的检浊�/p>

行业应用９�/strong>

l 食品、饲料行业和饮料行业——谷物、奶制品、肉制品、渔产品、动物食品、婴儿食品、饮料及酒类

l 环境和农业行业——有机物质、土壤、水、废水、淤泥、植物叶片等

l 制药和化工行业——塑料制品、石油产品、化妆品、化工品筈�/p>

Brief Introduction:

The new and completely innovative step forward for nitrogen determination by VELP Scientifica. VELP is now able to offer different solutions for nitrogen determination� from the standard Kjeldahl method to the flash of Dumas combustion. In accordance with the Dumas method� NDA 701 is ideal for high throughput� being fully automated and requiring just 3-4 minutes per analysis.

Technical Parameters:

Method of analysis:	Dumas method / Combustion
Detector:	Innovative autocalibrating TCD (no need for a reference gas)
Sample weight:	Up to 1 g
Autosampler capacity:	Up to 116 samples
Reproducibility (RSD):	< 0.5% for EDTA standards approx. 100 mg (9.57% N)
Recovery :	> 99.5%
Detection range:	0.1 - 200 mg N
Detection limit:	0.003 mg N absolute
Combustion temperature:	1030 ��C / 1886 ��F
Helium (He):	purity 99.999% (grade 5.0)
Oxygen (O2):	purity 99.999% (grade 5.0)
Compressed air or Nitrogen (N2):	purity 99.6 % (oil and water free)
Helium (He) pressure:	3 bar
Oxygen (O2) pressure:	3 bar
Compressed air or Nitrogen (N2) pressure:	4 bar
Interfaces:	USB� RS232
Power:	1400 W
Power supply:	230 V / 50 - 60 Hz
Weight:	54 kg / 119 lb
Dimensions (WxHxD):	655 x 510 x 410 mm (655 x 690 x 410 mm including autosampler)

Application:

The NDA 701 is extremely versatile� being suitable for nitrogen and protein determination in several kinds of sample� in accordance with official AOAC� AACC� ASBC� ISO and OIV methods.