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Monday, August 12, 2019

The rapid chromatographic method is a technology widely used in the separation and purification of active target compounds, such as organic compounds, natural products, and biological macromolecules. Rapid chromatographic method has the advantages of easy-operation, low-price, and fast-analysis...

Monday, August 12, 2019

The system of an HPLC column is composed of a liquid, a reservoir, a pump, a sampler, a column, a detector and a recorder. - The packing material of HPLC columns - The packing material has high carbon content, small surface polarity, very low chemical purity and high surface separation...

Thursday, August 08, 2019

Most common SPE cartridges are injection syringes made of polyethylene, in which there are two plugs made of polypropylene or fiberglass, with a certain amount of chromatographic adsorbent (filler) between the two plugs. SPE cartridges without sieve plate 1. Avoid “non-specific adsorption” 2...

Tuesday, August 06, 2019

In recent years, the application of HPLC in inorganic analysis has developed rapidly, and the use of flash columns has been more and more widely because of a method that can rapidly determine heavy metal elements in environmental water samples. Matters needing the attention of flash columns 1...

Thursday, August 01, 2019

There are two different cases of retention time: retention time drift and retention time fluctuations. The former means that the retention time changes only in one direction, while the latter refers to the fluctuation of the retention time without a fixed law. It is often helpful...

Friday, July 19, 2019

Bonded-phase chromatography is a liquid-liquid chromatography method in which a stationary phase is covalently bound to a carrier particle, which overcomes the mechanical shock in the distribution chromatography, the constant loss of the stationary phase and the gradual change of...

Monday, July 08, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Friday, July 05, 2019

When the polarity of the stationary phase is greater than the polarity of the mobile phase, it can be called normal phase partition chromatography or simply normal phase chromatography. If the polarity of the stationary phase is less than the polarity of the mobile phase, it can be...

Thursday, July 04, 2019

Flash column chromatography method is to separate the constituents from the mixture and thus purify it. In a word, flash column chromatography makes the samples go through the column which is filled with gel to achieve separation. In the beginning, the founder of flash column chromatography, Mr...

Thursday, July 04, 2019

(1) When loading and unloading or replacing the HPLC columns, the action should be light and the joint should be tightened properly. Strong mechanical vibration must be prevented to avoid voids in the bed. (2) If the instrument is used for routine analysis, the sample type is limited...

Tuesday, July 02, 2019

The key to regenerating contaminated HPLC columns is to know the nature of the contaminants and to find the right solvent to remove. If contamination is caused by the accumulation of strongly retained materials during repeated injections, simple steps to remove these contaminants...

Friday, June 28, 2019

Stationary Phase & Mobile Phase The stationary phase is used to separate the substances, which is packed into HPLC Column directly; Mobile phase is the carrier, which carries the substances into the stationary phase and goes through the stationary phase. It is gas in the vapor phase...

Friday, June 21, 2019

The cation chromatography column is a kind of high-performance liquid chromatography, which is a liquid chromatography method for analyzing anions and cations. The method has the advantages of good selectivity, sensitivity, rapidity, and simplicity, and can simultaneously measure...

Wednesday, June 19, 2019

Hawach Scientific sorts HPLC out of two series which are Xchroma and Echroma. Xchroma columns possess many and complete types of stationary phase(23 in total) with reliable qualities, while another one is cheaper among lower prices. Essential Technical Parameters Naming Rule It consists...

Friday, June 14, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Friday, May 31, 2019

Flash Columns Series Flash Columns produced by Hawachhas three series as follows. StarFlash Only silica gel columns are optional with another two types of standard and high-grade level which has higher purity degree and better quality than the former. PureFlash Corresponding to silica...

Tuesday, January 09, 2018

Skullcap Scientific Name: Scutellaria baicalensis Common Name: Chinese Skullcap Family: Lamiaceae Part used: Peeled and Dried Root Plant Properties: Antioxidant /Anti-inflammatory allergy /Anti-microbial / Diuresis /Cholagogue /Antipyretic Used For: allergies/respiratory/fever/coughs/diarr hea/ur...

Tuesday, November 08, 2016

Qingdao QY Liquid Crystal Co., Ltd. is a professional manufacturer and exporter of liquid crystal material, liquid crystal monomer,liquid crystal intermediate and Nematic liquid crystal, especially for polymer dispersed liquid crystal (PDLC), pdlc film, switchable pdlc film and smart film...

Saturday, October 15, 2016

Qingdao QY Liquid Crystal Co., Ltd. is a professional manufacturer and exporter of liquid crystal material, liquid crystal monomer,liquid crystal intermediate and Nematic liquid crystal, especially for polymer dispersed liquid crystal (PDLC), pdlc film, switchable pdlc film and smart film...

Tuesday, August 30, 2016

Price : 10,00 €

Within those famous vinyl phenyl silicone resin manufacturers and suppliers in China, RUNHE is the most reliable. You are welcomed to wholesale low price vinyl phenyl silicone resin from our factory and check the quotation with us.Vinyl Phenyl Silicone MQ ResinProduct Name：Vinyl Phenyl...

Friday, July 08, 2016

Quantity : 50 tons pe

Plant Sources Roots and stems of Cactus (Opuntia dillenii Haw) Bioctive Ingredients tetrahydroisoquinoline, phenyl-containing chain hydrocarbon amines, malic acid, succinic acid, mucus, triterpenoid saponin Stems contain quercetin-3-glycoside, resins, proteins, etc. CAS Number...

Thursday, May 26, 2016

E-mail: sales@liquidcrystals.cn sales@canaanchem.com http://www.liquidcrystals.cn http://www.canaanchem.com Qingdao QY Liquid Crystal Co., Ltd. is a professional manufacturer and exporter of liquid crystal material, liquid crystal monomer,liquid crystal intermediate and Nematic...

Thursday, April 07, 2016

D-P-Methyl Sulfone Phenyl Ethyl Serinate CAS NO .: 36983-12-7 Product Usage: Chemical intermediates, pharmaceutical intermediates English D-P-Methyl Sulfone Phenyl Ethyl Serinate Formula C12H17NO5S Molecular weight 287.33 Appearance light yellow to white crystalline powder...

Thursday, November 28, 2013

Quantity : 1 - Price : 1,00 €

2-amino-5-chlorophenyl)phenyl-methanon Synonyms: (2-amino-5-chlorophenyl)(phenyl)methanon e; Aminoketone; Benzophenone, 2-amino-5-chloro- (8CI); 5-Chloro-2-aminobenzophenone;Benzophenon e, 2-amino-5-chloro-; (2-amino-5-chloro-phenyl)-phenyl-methano ne; (2-Amino-5-chlorophenyl)phenylmethanone. ..

Thursday, November 28, 2013

Quantity : 1 - Price : 1,00 €

2-Phenylbenzimidazole-5-sulfonic acid Synonyms: 1H-Benzimidazole-5-sulfonicacid, 2-phenyl- (9CI); 5-Benzimidazolesulfonic acid, 2-phenyl- (8CI); 2-Phenyl-5-sulfobenzimidazole; Phenylbenzimidazole sulfonic acid; Ensulizole;Eusolex 232; Neo Heliopan Hydro;Novantisol; Parsol HS; CAS No...

Thursday, January 10, 2013

Quantity : 1 - Price : 2 000,00 €

Rubber Antioxidant 6PPD(4020) Chemical name: N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenyl enediamine Molecular Formula: C18H24N2 Molecular Weight: 268 Product standard: (HG/T3644-1999) CAS No.: 793-24-8 Product Specification: Item Qualified Grade Appearance ...

Friday, September 14, 2012

Quantity : 300 tons p - Price : USD 2900/ton

rubber antioxidant 4010NA/IPPD Specification: CAS No.: 101-72-4; EINECS No.: 202-969-7; Chemical name: N-isopropyl-N'-phenyl-p-phenylenediamine ; Appearance: purple-brown granule; Melting point min: 70.0; Heating loss(%max): 0.50; Ash content(%max): 0.30. Main identity: ...

Friday, September 14, 2012

Quantity : 300 tons p - Price : USD 2900/ton

rubber antioxidant 4020/6PPD Quality specification: CAS No.: 793-24-8; EINECS No.: 236-199-8; Chemical name: N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenyl enediamine; Appearance: purple-brown granule; Melting point(min): 46.0; Heating loss(%max): 0.50; Ash content(%max): 0.30. Main identity...

Friday, June 22, 2012

Quantity : 100 tons/y - Price : On demand

Our company offers for sale one of the most typical products of Bulgarian origin - Rose flower water. Package: Plastic barrels of 220 kg net each. Appearance: Transparent or opalescent liquid Color: Colorless Aroma: Of Rose Content of essential oil: Not less than 0.025% Identity...

Monday, May 31, 2010

Talniflumate Synonyms: 2-[[3-(Trifluoromethyl)phenyl]amino]-1,3 -dihydro-3-oxo- 1-isobenzofuranyl 3-pyridinecarboxylic acid ester CAS NO.: 66898-62-2 Empirical Formula: C21H13F3N2O4 Chemical Structure: Usage: Antiinflammatory & analgesicLocation : zhongnan road,wuhan,hubei,China, 430064 wuhan...