Chromatography column used in HPLC for separating at least two substances, comprises column tube filled with sorbent and having groove and external thread at each enddoi:DE10050402A chromatography column comprises a column tube (1) filled with sorbent and having filtering and sealing elements (2) ...
A composition and column used in HPLC, a method fo 优质文献 相似文献 参考文献 引证文献An automated HPLC separation method with two coupled columns for the analysis of PCDD/Fs, PCBs AND PACs A new automated separation method is described for the analysis of polychlorinated dibenzo- p -dioxins ...
Columns are packed with the finest commercially available silicas and bonded phases from the most recognized HPLC manufacturers in the world. The columns are tested with specially selected solutes that can be used to establish the reproducibility of retention and selectivity needed in the HPLC ...
Used in reversed-phase mode, retention and enantioselectivity is regulated by changes of pH, buffer concentration and organic modifier. The mobile phases are mixtures of phosphate or acetate buffers and organic solvents such as 2-propanol or acetonitrile. The column is preferably used for the ...
AS27 hydroxide-selective anion-exchange column. The selectivity of the Dionex IonPac AS27 column has been optimized for trace level analysis of bromate in the presence of ppm levels of ethylenediamine (EDA). EDA is used as a preservative in some drinking water samples and can cause interference...
The Thermo Scientific Acclaim* Carbonyl C18 HPLC columns are designed specifically for superior resolution and high-throughput separation for DNPH derivatives of aldehydes and ketones regulated by the U.S. Environmental Protection Agency (EPA) in methods such as EPA 554, EPA 8315, EPA 1667, EPA TO...
Its earlier name was High Pressure Liquid Chromatography because it involved use of liquid mobile phase requiring higher pressures than gases used in Gas Chromatography. Why pH is important in HPLC? Since the retention of ionisable compounds are very sensitive to the mobile phase pH, it is necess...
excellent choice for isomer separation, or detection of impurities. These columns have low back pressure due to the high quality of materials used in their manufacturing. With a unique polymeric end-capping these columns will also provide very little unwanted secondary interactions and better peak ...
also compatible with most mobile phases used in HPLC. While THF will cause PEEK to swell, this is limited to PEEK capillary tubing <1.0 mm ID. BioSafe™ PEEK tubing also has superior wall thickness for strength and an ultra-smooth internal surface finish (10 µin Ra) for high ...
In case multiple number of analytical columns are used together, wash them separately. During the column cleaning, disconnect the detector and collect the washing solution directly from the column outlet into a waste container (i.e., do not let the solution go through the detector). If the ...