產(chǎn)品簡(jiǎn)介：
意大利VELP是世界的分析儀器制造商，VELP以其和創(chuàng)新力開發(fā)和生產(chǎn)了優(yōu)良的機(jī)械和電子產(chǎn)品。VELP從1983年開始設(shè)計(jì)、生產(chǎn)各種實(shí)驗(yàn)室分析儀器。產(chǎn)品涵蓋食品及飼料系列、攪拌器系列、環(huán)保分析系列等，為客戶提供優(yōu)質(zhì)、合適的解決方案。VELP杜馬斯定氮儀——NDA701是VELP公司根據(jù)燃燒法開發(fā)出的新的氮/蛋白質(zhì)快速分析、測(cè)定儀！目前VELP是世界上一家擁有凱氏方法和杜馬斯方法定氮儀的公司，是整個(gè)分析儀器行業(yè)的開拓者！ 技術(shù)參數(shù)：| 功能 | 測(cè)定氮/蛋白質(zhì)含量 |
| 原理 | 高溫燃燒 |
| 測(cè)定時(shí)間 | 僅需 3min |
| 自動(dòng)化 | 全自動(dòng)操作 |
| 樣品處理 | 無需樣品處理 |
| 樣品要求 | 均一性要求高 |
| 載氣 | He(氦氣) |
| 樣品量 | 微量分析 |
| 1g | |
| 檢測(cè)下限 | 0.003mg |
| 重現(xiàn)性 | ＜0.5% |
| 反應(yīng)溫度 | 1200℃ |
| 化學(xué)試劑 | 無 |
| 環(huán)境污染 | 無 |
| N測(cè)定方法 | TCD檢測(cè)器 |
| 國(guó)標(biāo)規(guī)定 | 食品及飼料中蛋白質(zhì)的檢測(cè) |
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.
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