CHEMISTRY - 390 Annonces

Samedi 12 juin 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...

Mardi 25 mai 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...

Vendredi 14 mai 2021

Quantité : more than - Prix : 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...

Vendredi 14 mai 2021

Quantité : 100 - Prix : 145,00 €

vélo électrique 36v 10ah arrière rack batterie pack batterie 36v reention brilliance rack type spécification de batterie: Modèle Junda-J009 Chimie LiNiCoMnO2 Tension nominale 36V Capacité nominale 10 Ah Poids Environ 3,5 kg / 4,5 kg Boîtier extérieur argent ou noir Dimension 160...

Jeudi 01 octobre 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...

Vendredi 28 août 2020

Quantité : 100 unités - Prix : 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...

Mardi 05 mai 2020

Quantité : 1500 litre

Bonjour Madame et Monsieur ; Notre société ECOLAND est une société spécialisée dans l'extraction de l'huile précieuse de figue de barbarie installée en Tunisie. En fait, on dispose d'une chaine d'extraction d'huile bien installée dans une usine de superficie plus de 300m² avec toutes...

Lundi 20 janvier 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...

Mardi 14 janvier 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...

Jeudi 09 janvier 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...

Vendredi 03 janvier 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...

Jeudi 12 décembre 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...

Samedi 16 novembre 2019

Quantité : 8000kgs - Prix : 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...

Samedi 26 octobre 2019

Quantité : 8000kgs - Prix : 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...

Samedi 12 octobre 2019

Quantité : 8000kgs - Prix : 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...

Mercredi 25 septembre 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...

Jeudi 19 septembre 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...

Mercredi 18 septembre 2019

Quantité : 20GP - Prix : 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...

Jeudi 12 septembre 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...

Jeudi 12 septembre 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...

Mercredi 14 août 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...

Vendredi 09 août 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...

Mercredi 07 août 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...

Mardi 06 août 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...

Lundi 15 juillet 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...

Jeudi 04 juillet 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...

Lundi 01 juillet 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...

Mercredi 29 mai 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...

Jeudi 09 mai 2019

Quantité : 1500Square - Prix : 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...

Mercredi 06 mars 2019

Quantité : 10'000 lit

Nous pouvons attendre une production annuelle de 10'000 litres. Utilisée dans l'industrie parmaceutique, parfumerie et cosmétique. Localisation : Route de la Plantay, 5, 1163 Etoy, Personne à contacter : Marco Zottich, +41 7 89 53 91 08