The procedure below includes a filtration step using Whatman #42 filter paper.下面的过程,包括使用的Whatman#42滤纸过滤步骤。Other procedures may call for forcing the sample through a millipore filter before injection.其他程序可能要求强制通过注射前的微孔过滤器样品。However you do it, make sure there ...
HPLC Standard Operating Procedure Last Revised March, 3, 2016 This document is intended to be a guide for operating the Garner Lab’s HPLC systems and is only intended to provide instructions for users who are already generally familiar with HPLC operation. If you’ve never used an HPLC ...
The procedure below includes a filtration step using Whatman #42 filter paper.下面的过程,包括使用的Whatman#42滤纸过滤步骤。 Other procedures may call for forcing the sample through a millipore filter before injection.其他程序可能要求强制通过注射前的微孔过滤器样品。 However you do it, make sure ...
5063-6586 5063-6589 0905-1420 www.agilent.com/chem 23 Pump Maintenance Seals and Pistons Seal Wear-In Procedure After you have replaced the standard seals, Agilent recommends performing the seal wear-in procedure. This procedure requires isopropanol, an adapter, and a restriction capillary. Do ...
Contrary to the accepted dogma, some benzoyl chloride may survive the derivatization procedure and be extracted and applied to the column; its presence can be detected by a peak in the chromatogram (Fig. 2) and by its odor if the top of the column is unscrewed; use of a guard column (...
HPLC 法测定不同产地返魂草中 绿原酸的含量 南敏伦,赫玉芳,刘静月,赵全成 (吉林省中医中药研究院,吉林长春130021)摘要:目的建立同时测定不同产地返魂草中绿原酸含量的方法。方法采用HPL C 法。色谱柱为Diamonsil O DS C 18柱(416mm @250mm,5L m),流动相为乙晴-体积分数为014%的磷酸水溶液,检测波长为326...
The chromatographic procedure was carried out with DiamonsilTM C18 (250 mm × 4.6 mm, 5 μm) as an analytic column and a mixture consisting of acetonitrile-0.05% phosphoric acid in gradient as mobile phase, and the temperature of column was 30 ℃. The detection wavelength was set at 238 ...
Attention: Before you continue with this procedure, lower the eluent reservoir to eliminate STOP gravity flow of eluent. 2. Disconnect the eluent supply line from the inlet manifold on the pump. 3. Use the 1/2-inch open-end wrench to remove the check valve housing from the inlet or ...
1.1This test method covers the assay of dicumyl peroxide2 in commercially available refined grades of dicumyl peroxide. Technical grades can also be assayed,provided that impurities that interfere chromatographically are absent(see Note1). These materials nominally contain approximately99and92% of ...
• Simplified workflows: standardize on an easy-to-use single-sorbent procedure that maximizes analyte recovery from a wide variety of fatty samples. • Save time and money by reducing material costs, inventory, training time, and documentation, to streamline lab efficiency. The EMR—Lipid ...