liquid chromatography column, gas chromatography column, standard substances, chemical reagents, experimental consumables-xi'an pengzheng industrial (group) co., ltd.

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liquid chromatography column、 gas chromatography column、 standard substance、 chemical reagents、 experimental supplies、

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xi'an pengzheng industrial (group) co., ltd.'s business involves the production and manufacturing of experimental consumables, sales of special chemical supplies, sales of scientific instruments, e-commerce platforms, wholesale and retail of publications, etc., involving more than 100,000 products, spanning nearly ten industries, and has grown into a diversified group company integrating r&d, production, sales and services. the main r&d and production products include liquid phase analysis chromatography columns, preparation columns, SPE solid phase extraction column, immunoaffinity column, sample vial, headspace vial, micropore filter, Flash columns, etc.

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liquid chromatography column, gas chromatography column, standard substances, chemical reagents, experimental consumables xi'an pengzheng industrial (group) co., ltd. xi'an pengzheng industrial ( group ) co., ltd. home company introduction product center application center news contact us mall 1 2 P R O D U C T S C E N T E R product center… … chromatographic separation analysis chromatographic column village general analysis P F c h r o m C 1 8 H chromatographic column score analysis reverse phase P F c h r o m C 1 8 chromatographic general score analysis reverse phase P F c h r o m A Q C 1 general score analysis reverse phase P F c h r o m E P C 1 general score analysis reverse phase P F c h r o m C 8 chromatographic column score analysis reverse phase P F c h r o m C 4 chromatographic column score analysis reverse phase P F c h r o m P h e n y general score analysis P F c h r o m N H 2 normal phase amino general score analysis P F c h r o m S i l i c a analysis of normal phase general scores P F c h r o m S A X strong anion chromatography column standard substances products village inspection standard substances chinese medicine reference products imported standard substances standard solution veterinary drug standard impurities standard quality control sample chemical reagent product village H P L C grade solvent microbial detection product products village dry powder culture medium microbial granule culture medium (2 0 2 0 pharmacopoeia) pre-made liquid culture medium (glass bottle) laboratory instrument products village uv-visible spectrophotometer liquid chromatography column thermostat microscope laboratory p H electronic precision balance of meter incubator autoclave S P E solid phase extraction device laboratory consumables product village 2 m sample vial headspace bottle needle filter micropore filter membrane F l a s h column pipette glassware calligraphy A B O U T U S xi'an pengzheng industrial (group) co., ltd., referred to as pengzheng group, is headquartered in the ancient capital xi'an. after more than ten years of continuous development, its business involves the production and manufacturing of experimental consumables, sales of special chemical supplies, sales of scientific instruments, e-commerce platforms, wholesale and retail of publications, etc., involving more than 100,000 products, spanning nearly ten industries, and has grown into a diversified group company integrating r&d, production, sales and services. relying on the advantages and strengths of scientific research institutes, experimental consumables production and manufacturing have established a strict production and quality management system, and are committed to providing customers with chromatographic separation and analysis technology, products and overall solutions. it mainly serves industries related to people's livelihood, such as biomedicine, food safety testing, environmental monitoring, fine chemicals, etc., and is in a rapidly developing industry. the main r&d and production products include liquid phase analysis chromatography columns, preparation columns, S P E solid phase extraction column, immunoaffinity column, sample vial, headspace vial, micropore filter, F l a s h columns, etc. A A P L Y C A S E application fields…… application fields village chemistry and chemical engineering C H E M I C A L E N G I N E E R I N G food safety F O O D S A F E T Y application center N A T U R A L P R O D U C T pharmaceutical industry P H A R M A C E U T I C A L I N D U S T R Y environmental protection E N V I R O N M E N T A L P R O T E C T I O N N E W S C E N T E R news... news village 2 vitamins C and 98 yuan of vitamins C ， what's the difference? 2 dollars of vitamins C and 98 yuan of vitamins C ， what's the difference? introduction: what everyone usually calls vitamins C in fact, it is also a chemical substance, it has its own chemical structure, in english V i t a m i n C ， also known as L ascorbic acid, an acidic hexose derivative, is enol hexose lactone, and the full chemical name is 2, 3, 5, 6 tetrahydroxy2 4 lactone. most well-known is vitamin deficiency C it can cause scurvy. many dimensions on the market C product, that 2 yuan vitamins C and 98 yuan of vitamins C ， what's the difference? name: D l ascorbic acid english name: D L a s c o r b i c a c i d C A S N o ： 6 2 6 2 4 3 0 0 gc faq guide gas chromatography faq guide gas chromatography faq guide many problems encountered in gas chromatography experiments can generally be avoided through daily maintenance. for example, regularly changing the septum, keeping the injector and detector clean and well maintained will solve many problems. this article lists many common gas chromatography failures and solutions or suggestions. when you resolve a failure, record it to help resolve future problems and become part of your lab’s daily maintenance work. of course, we can also consult us to clarify chromatographic issues more quickly and accurately. 1. baseline problem various anomalies on the baseline can be classified into the following categories: drift, noise, sudden change in baseline position, glitch, low frequency noise. the possible causes of downward drift of baseline. recommended measures are recommended. the new chromatographic column has just been installed on the instrument. what are the types of base gas chromatographic columns? the polarity and non-polarity of gas chromatography columns are mainly divided into three types: column types, separation order, and column temperature. 1 、 different column types: the columns of non-polar fixing liquid of gas chromatography columns include hydrocarbons and siloxanes; the columns of polar fixing liquid of gas chromatography columns are mainly polyethylene glycols. 2 、 different separation orders: the separation order of non-polar columns of gas chromatography columns is mainly based on the boiling point of the test solution, while the separation order of polar columns of gas chromatography columns is also related to the polarity of the substance in addition to the boiling point. 3 、 different pillar temperatures: navigation village home page about product service news contact number: 0 2 9 8 7 5 4 1 5 5 3 corporate email: 4 1 6 1 9 1 5 0 4 @ q q . c o m friendly links: 1 6 8 8 shop link company address: 3rd floor, aimi industrial park, no. 5 1 1 daqing road, lianhu district, xi'an city, shaanxi province C o p y r i g h t 2 0 1 2 2 0 2 2 , xi'an pengzheng group, A l l R i g h t s R e s e r v e d shaanxi I C P preparation 2 0 2 2 0 0 4 3 0 2 no. 1 manager zhao of diancun: manager cai: manager yang: : jiuyun intelligent station construction | bathroom ＄ instruct

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