ANALYTICAL - 357 Annonces

Monday 30 September 2019

Pendulum mill is also called as suspension roller or Raymond mill. It is a "ring and roller" powder-making mill equipment, which is combined with air flow screening and pneumatic conveying. The pendulum grinding mill belongs to the roundel immovable mill and has high universality...

Sunday 29 September 2019

The paper of the filter paper is loose and has strong absorption of liquid. Analytical laboratories often use filter paper as a filter medium that separates the solution from the solid. More importantly, during the manufacturing process of quantitative analysis filter paper, the pulp...

Thursday 26 September 2019

Along with the rapid improvement of domestic technology, the QuEChERS analytical method is no longer just applied in the pesticide residue detection on food and fruits, but also used for the extraction and purification of cereal samples with low moisture content. Moreover, it is also...

Thursday 19 September 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...

Thursday 19 September 2019

The filter paper used in the analytical laboratory performs a strong absorption effect for liquids, which can separate the solution from the solid. The filter paper produced domestically could be divided into three types, including qualitative filter paper, and quantitative filter paper...

Friday 13 September 2019

Some samples (such as avocado, peanuts, olive oil, etc.) contain more fat. Due to the limited solubility of fat in acetonitrile, the recovery rate of some fat-soluble pesticides (such as HCB, DDT, etc.) is reduced. How to overcome the low experimental results caused by fat? You can...

Thursday 12 September 2019

Cellulose extraction thimbles are highly recommended as the high-quality sample reservoirs for quality control, research, and analytical applications especially when solvent extraction of solids and semi-solids need to be carried out. And the use of a Soxhlet extractor loads the safe...

Thursday 12 September 2019

Hawach Scientific is the production of filter paper professional manufacturers with advanced production technology and perfect testing equipment. Quantitative filter paper is suitable for a wide range of critical gravimetric analytical filtration procedures. In the manufacturing process...

Tuesday 03 September 2019

The basic principle of SPE cartridges is that the liquid sample is made to pass through the adsorbent to retain the tested substance, and then the impurities are washed away with appropriate strength solvent, and then the tested substance is eluted with a small amount of good solvent...

Thursday 29 August 2019

Quantité : 1 - Prix : 0-50000

We are one of the professional air quality monitoring equipment suppliers, please always feel free to contact. The atmosphere is the basic condition for our survival. Air pollution has become a serious problem that affects human health and threatens human survival because of the persistent...

Thursday 22 August 2019

QuEChERS is an extraction method for pesticides in fruits and vegetables. It is also a cleanup method we use to remove sugars, lipids, organic acids, proteins, pigments, and excess water. After the publication of the original QuEChERS method in 2003, QuEChERS has been practiced all...

Friday 16 August 2019

The membrane filters of different materials have different characteristics. Here are as follows: - Nylon (NY) Material - Features: hydrophilic, resistant to some organic materials, not strong acid, protein binding capacity is high, so it is not suitable for protein recovery. Application...

Friday 09 August 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...

Wednesday 07 August 2019

Each analyst needs filter paper, which is a product with high consumption in the laboratory. Filter paper is commonly used in analytical laboratories as a filter medium to separate the solution from the solid. Basic introduction The paper is loose and has strong absorption performance to liquid...

Tuesday 06 August 2019

Quantité : 100000TM - Prix : 50USD

Uses of Diethanolamine Diethanolamine similar to triethanolamine (T775580) is used as a surfactant. It also has the potential to be a corrosion inhibitor by means of chemisorption. Definition of Diethanolamine ChEBI: A member of the class of ethanolamines that is ethanolamine having...

Thursday 01 August 2019

QuEChERs is a sample treatment and purification technology for the detection of multiple pesticide residues in high-water-content food. Because it simplifies the previously complex extraction procedures and expands the scope of the extracted pesticide residues, QuEChERs becomes an...

Thursday 01 August 2019

Quantitative filter papers are widely used for quantitative and gravimetric analysis in the lab. To make them ash-less and achieve high purity, a special production process with acid is required in production, washing with HF or HCl acids, cleaning with demineralized water followed...

Tuesday 30 July 2019

Quantitative filter paper or qualitative filter paper, it is a question. While at the very beginning, we can distinguish from the literal meaning between quantitative and qualitative. Quantitative refers to fixed quantity, more about physical properties. Qualitative refers to fixed quality...

Friday 12 July 2019

Hawach Scientific mission is to work with our customers to make the world healthier, cleaner and safer. We help our customers accelerate research in the life sciences, solve complex problems and challenges in the analytical field, promote the development of medical diagnostics, accelerate...

Friday 12 July 2019

Note on the filter paper box that when using the quantitative and qualitative analysis filter paper to filter the precipitate: 1. Generally uses natural filtration, using the filter paper body and the ability to retain solid particles to separate the liquid and solid; 2. Because the...

Friday 12 July 2019

Today, Hawach want to talk about the pre-treatment process for pesticide residue detection from the perspective of food safety – QuEChERS, and also tell you how to pre-treat pesticide residue food. Introduction The present analytical methods and determining techniques, pre-treatment...

Thursday 11 July 2019

With the development of society and technology, chromatographic analysis theory has also been developing rapidly. HPLC column has now been widely applied in every field of laboratory analysis. HPLC column gathers function of both detection and separation. With the right choice, use...

Thursday 11 July 2019

With the development of society and technology, chromatographic analysis theory has also been developing rapidly. HPLC column has now been widely applied in every field of laboratory analysis. HPLC column gathers function of both detection and separation. With the right choice, use...

Tuesday 09 July 2019

The reversed-phase HPLC columns may be repeatedly injected into a sample containing a strongly retained material, and in particular, the sorbent components such as large molecular weight or hydrophobic biological flow proteins and strong alkaline substances may be adsorbed on the silica medium...

Monday 08 July 2019

HPLC is the separation of sample components between the column packing and the mobile phase for mass exchange. Therefore, the mobile phase is required to have the following characteristics: a. the flow relative to the sample has a certain solubility, to ensure that the sample components...

Thursday 04 July 2019

Manufactured from the same raw materials as the ashless grades, the qualitative filter paper is suited for ordinary filtration when we need to determine materials by using qualitative analytical techniques in the lab, with the features of fast flow rate due to their structure. Qualitative...

Friday 21 June 2019

Normally SPE cartridge has two basic adsorption modes: target compound adsorption mode, impurity adsorption mode; 5 operation modes: gravity operation, manual positive pressure, centrifuge, negative pressure and positive pressure mode. Now let's review the whole process step by step...

Thursday 20 June 2019

Extraction is often susceptible to matrix interference. One analytical method is fine in this matrix but can become problematic in another matrix. If we encounter such a situation, how can we improve the QuEChERS method to overcome it? For pesticide residues, most of the food samples...

Thursday 20 June 2019

Filter paper has excellent filtration property and strong absorption performance on liquid. Scientific workers use filter paper as a kind of media in analytical laboratories to separate solution from solid. Currently, there are mainly three kinds of filter papers which can be purchased...

Tuesday 11 June 2019

Solid phase extraction (SPE) is a separation process by which compound that is dissolved or suspended in a liquid mixture, thereby being separated from other compounds in the mixture according to their physical and chemical properties. There are 4 general functions as below: 1.Matrix...

Wednesday 05 June 2019

Hawach summarized the advantages of QuEChERS in eight aspects. 1. Recovery Rate QuEChERS technology has the advantage of high recovery rate. Experimental data show that the recovery rate of large quantities of polar and volatile pesticides by QuEChERS is above 85%. 2. Accuracy Laboratory...

Friday 27 October 2017

Building material combustion calorific value calorimeter Mainly used for the detection of stone, wood, concrete, evenly dispersed mineral wool and polymers and other building materials, the determination of calorific value of fuels, used in building research and technical supervision...

Saturday 14 October 2017

Quantité : MOQ 5 TONS - Prix : USD 1760 PER TON

Quick Details Classification: Ammonium Organic Salt CAS No.: 6009-70-7 Other Names: NO MF: CH3COONH4 EINECS No.: 214-202-3 Place of Origin: China (Mainland) Purity: 99.6% MIN Appearance: White Crystal Application: Used for safety explosive , analytical reagent and organic synthesis...

Tuesday 15 August 2017

Quantité : 100 - Prix : 1,00 €

La chromatographie en phase gazeuse (GC) est une technique analytique pour une grande variété d'identification et de quantification des composés organiques volatils et / ou semi-volatils. C'est une technique indispensable pour le laboratoire d'analyse pour analyser une variété de...

Friday 14 April 2017

Quantité : 2 MT

Name: Yttrium chloride anhydrous CAS: 10361-92-9 Molecular formula: YCl3 Specifications: YCl3 / RECl3: > 99%, Yttrium chloride products accounted for the content of rare earth chloride> 99%, H2O <0.5%</p> Packing: 5kg / bag vacuum packaging, topical iron drum 50kg / barrel...

Saturday 04 March 2017

Tige de carbure de silicium est faite de carbure de silicium hexagonal verte de haute pureté comme matière première principale, selon un certain ratio de blancs de traitement, la 2200 ℃ haute température silicification recristallisation frittage et fait de tige en forme de tube,...

Saturday 04 March 2017

Tige de carbure de silicium est faite de carbure de silicium hexagonal verte de haute pureté comme matière première principale, selon un certain ratio de blancs de traitement, la 2200 ℃ haute température silicification recristallisation frittage et fait de tige en forme de tube,...

Saturday 04 March 2017

Tige de carbure de silicium est faite de carbure de siliconium hexagonal verte dehautepuretécommematièrepremièreprincin cale，selon un certain ratio de blancs de traitement，la 2200℃hautetempératuresilicificationrecri stallisation frittage et fait de tige en forme de tube，àhautetempératurenonmétalli...

Saturday 04 March 2017

Tige de carbure de silicium est faite de carbure de silicium hexagonal verte de hautepuretécommematièrepremièreprincipal e，selon un certain ratio de blancs de traitement，la 2200℃hautetempératuresilicification recristallisation frittage et fait de tige en forme de tube，àhautetempérature...

Saturday 07 May 2016

- Quick Details - - CAS No.: 7783-6-4 - Other Names: Hydrosulfuric acid, Hydrothionic acid, Sulfhydric acid - MF: H2S - EINECS No.: 231-977-3 - Place of Origin: Sichuan, China (Mainland) - Grade Standard: Industrial Grade - Purity: 99.999%, 99.999% - Appearance: Colorless...

Thursday 28 January 2016

Product Name: SHMP Specifications: 68.0% Product Category: Sodium Salt Sodium Hexametaphosphate(SHMP) 1.Specification: Specifications Industrial Grade Food Grade Total phosphate, as P2O5%≥ 68.0 68.0 Inactive phosphate, as P2O5%≤ 7.5 7.5 Iron, as Fe %≤ 0.05 0...

Tuesday 17 November 2015

AC single phase 2 stage filter/EMI filter AC single phase 2 stage filer/EMI filter, EMC filter, AC filter, AC single phase filter, Electromagnetic filter Features and Application of AC single phase 2 stage filter 1.High security and reliability,high performance filters 2.Excellent...

Tuesday 17 November 2015

AC single phase 3 stage filter/EMI filter, EMC filter, AC filter, AC single phase filter, Electromagnetic filter Features and Application of AC single phase 2 stage filter 1.High security and reliability, high performace filters 2.Good performance of suppressing common mode and...

Friday 11 September 2015

Quantité : 1 - Prix : 1,00 €

Ce est de haute qualité des cartes marquées pour le contact lentille, comme ces cartes UV marquée sont faites de haute qualité de l'encre et faits par la machine de marquage plus habiles et les travailleurs. cette nouvelle encre UV sont plus marquée cartes de meilleure qualité que...

Friday 11 September 2015

Quantité : 1 unit - Prix : 1 USD

description Ce est une nouvelle clé marque de voiture de la caméra Porsche, vous pouvez l'utiliser pour vous aider à faire fonctionner avec le poker analyseur. Il peut être utilisé pour toutes les générations de smoothsayer de poker et scanners de poker. A Fonction: Il est une...

Thursday 13 August 2015

Quantité : 1 - Prix : USD300

FA-B Analytical Balance   Features: - Electromagnetic balance sensor - External calibration weight. - Automatic Calibration System. - Whole taring. - 4-level shockproof. - Counting function - Adopting large blue backlighting LCD screen (120*55 mm), which has complete display functions...

Tuesday 06 January 2015

Quantité : 1 - Prix : 1,00 €

Ce est un dernier modèle de téléphone mobile iPhone, ce est l'iPhone 6, il est très, très populaire dans le monde, mais maintenant nous avons déjà l'iPhone 6 caméra de téléphone mobile, si ce est une copie iPhone 6, et il a toutes les fonctions de l'iPhone 6 . Ce est une caméra pour...

Sunday 04 January 2015

Quantité : 1 - Prix : 1,00 €

Ce sont nos nouveaux Une qualité des lentilles de contact et UV nouveau grade B lentilles de contact UV pour UV dos d'encre de marquage cartes jeu de poker. Ils sont de qualité supérieure de nouvelles lentilles de contact, ils sont de couleur rouge clair, taille environ 10 mm. Ils...

Sunday 04 January 2015

Quantité : 1 - Prix : 1,00 €

comme pour les lentilles de contact UV, ils sont capables de voir encre UV cartes marquées plastique, UV mahjong d'encre, l'encre UV plastique marquage des cartes à jouer de poker, des verres, des enveloppes peintes, Domino marquée, marqués cartes en papier et ainsi de suite. Baguettes...

Sunday 04 January 2015

Quantité : 1 - Prix : 1,00 €

Ce est nouveau écouteurs bluetooth, mais il est miro-oreillette sans fil avec Bluetooth. Il est petit émetteur et petit écouteur, de sorte que vous pouvez le prendre avec vous partout. Écouteurs Bluetooth peuvent être utilisés pour le téléphone mobile, il vous suffit de tourner...

Saturday 20 September 2014

Technical Parameter: Automatic moisture tester GM-MZS/ MS Working power supply AC220V±10% 50Hz Microwave input power ≤1400W microwave output power ≤900W microwave frequency 2450MHz infrared power ≤1200W Weighing range of balance total moisture: ≤310g ...

Saturday 16 November 2013

Quantité : 10000000 - Prix : US$25

CAS: 1344-28-1 Specifications: 1. Item No.: VK-L10G Appearance: White powder Crystal: Alpha phase Purity: 99.999% Partical size, nm: 10-20nm 2. Item No.: VK-L30G Appearance: White powder Crystal: Alpha phase Purity: 99.999% Partical size, nm: 30-60nm Application: 1. Transparent ceramics...

Thursday 24 October 2013

Quantité : 10000000 - Prix : US$26.8

Specifications: Item No.: VK-L10 Appearance: White powder Crystal: Alpha phase Purity, min: 99.99% Partical size: 10-20nm Application: 1. Transparent ceramics: High pressure sodium lamp, EP- ROM window. 2. Li- Ion batteries, include LMO, LCO and LFP etc. 3. High strength alumina ceramic...

Tuesday 15 October 2013

Quantité : 10000000 - Prix : USD25

Specifications: 1. Item No.: VK-L30 Appearance: White powder Crystal: Alpha phase Purity, min: 99.99% Partical size, nm: 30-60nm 2. Item No.: VK-L20Y Appearance: White powder Crystal: Gamma phase Purity, min: 99.99% Partical size, nm: 10-20nm Application: 1. Transparent ceramics:...

Tuesday 15 October 2013

Quantité : 10000000 - Prix : USD25

Property: Our company adopts international advanced dispersion crafts to disperse 5-10nm nano alumina dioxide powder in water,forming highly dispersed,stabled and uniform nano alumina dioxide hydrophobic slurry.The slurry is activer and easier to add than powder.And the product has...

Saturday 12 October 2013

Quantité : 3000 - Prix : 100,00 €

Product Name: Gentian extract Latin Name: Radix Gentianae Part Used: Root and stem Ingredient: Amarogentin, Gentiopicrin Specification 4: 1; 10: 1; 3%, 5%, 8%; Analytical method: HPLC; TLC Appearance: Yellow Brown powder Extract Method: Grain / Water Brand Name ：Hunan Nutramax Inc...

Friday 29 March 2013

Quantité : MOQ is 1 k - Prix : based on the order

Poudre d'oxyde cuivreux: QQNANO-Cu2O-20 (20nm) - pureté ≥ 99,5% 1) Couleur: jaune 2) N ° CAS: 1317-39-1 3) la taille moyenne des particules: 20 nm 4) La pureté ≥ 99,5% 5) la surface spécifique: 52.46 m2 / g 6) Dispersion: aucune agglomération dur, peuvent être dispersés dans...