CHEMISTRY - 390 Anuncios

Sábado 12 junio 2021

Prime steel billets are the second stage product in steel production. They belong to hot rolling and directly made and formed in the process of steel smelting, belonging to the category of casting semi-finished products. Their final products involve deformed steel rods, wires, and...

Martes 25 mayo 2021

Zhongtian East Fluorine Silicon Material Co., Ltd.,liquid silicone rubber manufacturers, mainly engaged in organic silicon monomer, research and development of fluorine silicon new materials and silicone sealant. Silicone fluid have unique properties because they are not products...

Viernes 14 mayo 2021

Cantidad : more than - Precio : 3000-6500 euro per M

General Introduction of Steel Billets Prime steel billets are the second stage product in steel production. They belong to hot rolling and directly made and formed in the process of steel smelting, belonging to the category of casting semi-finished products. Their final products involve...

Viernes 14 mayo 2021

Cantidad : 100 - Precio : 145,00 €

bicicleta eléctrica 36v 10ah batería de rack trasero batería 36v reention brillo tipo de rack especificación de la batería: Modelo Junda-J009 Química LiNiCoMnO2 Voltaje nominal 36V Capacidad nominal 10Ah Peso Aproximadamente 3,5 kg / 4,5 kg Caja exterior plateado o negro Dimensión...

Jueves 01 octubre 2020

General Introduction of Steel Billet Prime steel billets are the second stage product in steel production. They belong to hot rolling and directly made and formed in the process of steel smelting, belonging to the category of casting semi-finished products. Their final products involve...

Viernes 28 agosto 2020

Cantidad : 100 unités - Precio : Grande taille: 3000

ACADÉMIE CHINOISE DES SCIENCES MILITAIRES ET DÉVELOPPEMENT CONJOINT CDC DE CHINE. PRODUIT DÉSIGNÉ DU COMITÉ DE TRAVAIL TCM SCIENCE DE LA VIE. LE PREMIER PURIFICATEUR D'AIR GRAPHENE COVID-19 AU MONDE. STÉRILISATEUR DE VIRUS À EFFET TOTAL GRAPHÈNE. SAINT PATRON DE LA SANTÉ. VIRUS NEMESIS...

Martes 05 mayo 2020

Cantidad : 1500 litre

Hola señora y señor; Nuestra empresa ECOLAND es una empresa especializada en la extracción de aceite de nopal precioso instalado en Túnez. De hecho, tenemos una cadena de extracción de petróleo bien instalada en una fábrica con un área de más de 300 m² con todo el equipo necesario...

Lunes 20 enero 2020

1. Why does the retention time sometimes drift and sometimes change rapidly when analyzed by HPLC? How to solve it? About drift ① The temperature control is not good. The solution is to use a constant temperature device to keep the HPLC column temperature constant. ② The mobile phase...

Martes 14 enero 2020

Filter paper can be qualitative and quantitative. In the application of analytical chemistry, after the inorganic compound is separated by filtration to separate out the precipitate, the residue collected on the filter paper can be used to calculate the loss rate during the experiment...

Jueves 09 enero 2020

Hawach Scientific specialized in filtration products for more than decades years. All our filter papers are made from the imported membrane in the cleanroom. Before release to market, the products are consigned to the QC department for random inspection. In analytical chemistry, the...

Viernes 03 enero 2020

The vacuum filters are mainly applied for filtration of mobile phase of High-Performance Liquid Chromatography, particulate and microbiological contamination. They are the basic instruments in the chemistry lab. Particularly, the glass solvent filter can make filtration of all kinds...

Jueves 12 diciembre 2019

Hawach bottle-top dispenser is an instrument for measuring liquid medicine. To ensure that your bottleneck dispenser has a long service life, some maintenance, and cleaning work can be done in the following situations: the pipette piston is not flexible; the dispensing of some restrictive...

Sábado 16 noviembre 2019

Cantidad : 8000kgs - Precio : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond micro powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. The lapping and polishing efficiency of the detonation-synthesized polycrystalline...

Sábado 26 octubre 2019

Cantidad : 8000kgs - Precio : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. The lapping and polishing efficiency of the detonation-synthesized polycrystalline diamond...

Sábado 12 octubre 2019

Cantidad : 8000kgs - Precio : USD0.025 - USD1.05

1) Properties Detonation-synthesized polycrystalline diamond micro-powder The structure resembles the rare natural polycrystalline black diamond, metallic-grey, superior toughness, self-sharpening. Monocrystalline vs polycrystalline diamond：The lapping and polishing efficiency of...

Miércoles 25 septiembre 2019

The pipette is a kind of accurate instrument for quantitative transferring and weighing liquid in biology and chemistry laboratories. The most relative element to keep the pipette accurate is tightness. There are several main factors affecting the tightness of the pipette. The first...

Jueves 19 septiembre 2019

The determination of 10 plant polyphenols in tobacco samples by solid phase extraction and high-performance liquid chromatography as below: Plant polyphenols are important substances in tobacco. The content of polyphenols in tobacco has an important influence on tobacco quality. Therefore...

Miércoles 18 septiembre 2019

Cantidad : 20GP - Precio : 5USD

Calcined Bauxite manufacturers produce Calcined Bauxite by firing (heating) the superior grade Bauxite at high temperature (from 850℃ to 1600℃). This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57 % to 58 % in raw Bauxite, Calcined...

Jueves 12 septiembre 2019

Vacuum filtration is a chemistry technique that can allow for a greater rate of filtration in the lab. In normal filtration, the gravity can provide the force drawing the liquid through the filter paper, but a pressure gradient performs this function in vacuum filtration, offering...

Jueves 12 septiembre 2019

As an important branch of chromatography, high-performance liquid chromatography (HPLC) has become an important application of separation and analysis technology in the fields of chemistry, medicine, industry, agriculture, commodity inspection, and law inspection. Features of high-performance...

Miércoles 14 agosto 2019

Flash column chromatography is an alternative to long column chromatography developed in 1978. This method aims to separate the components from the mixture and thereby purify it. It is built from existing long column chromatography techniques and is time-consuming and often unsatisfactory...

Viernes 09 agosto 2019

Reversed-phase chromatography (RPC) contains any chromatographic method using a non-polar stationary phase. The word “reverse” has a historical background. In the 1970s, most liquid chromatography was performed on unmodified silica or alumina. Their surface chemistry is hydrophilic...

Miércoles 07 agosto 2019

Pipe ttes are often used to remove a small amount of liquid in the laboratory. Micropipette first appeared in 1956, invented by Schnitger who is a scientist of the Institute of physiology and chemistry, Germany. Pipettes of different specifications are equipped with different sizes...

Martes 06 agosto 2019

Sample Vials are an essential tool in the lab. These general purposes of glass vials are to provide exceptional resistance to heat shock and chemical leaching. Our sample vials are always used in the field of a biological agent, cosmetics, high-value chemistry. And we have high-quality...

Lunes 15 julio 2019

All the technique cores of HPLC from Hawach Scientific are focused on the characteristics of the chromatogram column. Quality Recognition This is shown as the fact that terminal customers have published more than 500 papers on those journals at home and abroad. For famous oversea journals...

Jueves 04 julio 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...

Lunes 01 julio 2019

The aim of flash column chromatography is to separate components from the mixture and purify it. Briefly, flash column chromatography allows samples to be separated through columns filled with gels. Flash column chromatography has been widely used in organic chemistry since its inception...

Miércoles 29 mayo 2019

The CTE chloropac system is typically used for small to medium production capacities, while PPE system is typically used for larger production capacities of sodium hypochlorite. The Advantages for Applying Concentric Tubular Electrodes (CTE) Electrolyzer as Following: 1. Self-Cleaning...

Jueves 09 mayo 2019

Cantidad : 1500Square - Precio : US $4.25-6.6/ Square

AVAILABLE COLOR: clear, ultra clear, bronze, grey, etc. Customized BACK PAINT: green, blue, gray; Coating: Double Coating THICKNESS: 2mm, 3mm, 4mm, 5mm, 6mm, 8mm SIZE: 609mmx914mm, 914mmx914mm, 914mmx1220mm, 1220mmx1830mm, 1830mmx2440mm, 1524mmx2134mm, 2140mmx3300mm, 2440mmx3660mm etc...

Miércoles 06 marzo 2019

Cantidad : 10'000 lit

Podemos esperar una producción anual de 10'000 litros. Se utiliza en la industria de productos farmacéuticos, cosméticos y perfumería. Ubicación : Route de la Plantay, 5, 1163 Etoy, Persona a contactar : Marco Zottich, +41 7 89 53 91 08