METHODS - 9082 Annonces

Lundi 05 août 2019

Quantité : 1000 tons - Prix : 720 usd/ton

Cold drawn steel bar SAE1020 1.Product name: Cold drawn SAE1020 steel round bar. 2.Outside Diameter: From 1mm to 400mm 3. Material Grade : SAE1020 4.Main Standards: ASTMA276,ASTMA312,ASTMA213,GB/T14975-200 2,GB/T14976- 2002,GB/T13296-91,JIS 5.Processing methods: Cold Drawn...

Lundi 05 août 2019

QuEChERS method has unique advantages in pesticide residue analysis. Due to the irrational use of pesticides and inadequate supervision of pesticide use, people may suffer from acute or chronic pesticide poisoning after eating pesticide-contaminated food, and even threaten human health...

Samedi 03 août 2019

Quantité : 10000PCS/m - Prix : 25 USD above

Overview Iammeter is a dedicated remote energy monitoring system developed by us, to which you can connect your own Modbus energy meter and then start to monitor the electricity usage for your household electricity system, or commercial electricity system, or industrial electricity...

Samedi 03 août 2019

An air filter housing is a kind of air filtration device, as one of pneumatic three pieces, which are generally used to prevent dust for workshops, plants, operating rooms, laboratories or electronic mechanical communication equipment. - Filtration precision - The key to affect the...

Jeudi 01 août 2019

The flat sheet ceramic membrane is a new type of high temperature plate porous ceramic membrane, which is prepared by high temperature sintering process using inorganic materials such as alumina. Compared with the organic film, ceramic flat membrane has the advantages of good chemical stability...

Jeudi 01 août 2019

Ceramic membranes (Porous Ceramic Membrane & tubular ceramic membrane) are available for microfiltration, ultrafiltration and nanofiltration as single-channel or multiple-channel elements with channel diameters between 2 and 16mm. Their main characteristics of porous tubular ceramic...

Jeudi 01 août 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...

Mercredi 31 juillet 2019

CVD diamond (Chemical Vapor Deposition diamond). The mixture of carbon-containing gas and oxygen is excited and decomposed at a high temperature and a pressure lower than the standard atmospheric pressure to form an active diamond carbon atom, and the deposit is alternately grown...

Mercredi 31 juillet 2019

Sample vials play an important role in the experiments. We'd better not reuse them. If it has to be reused, the cleaning method is very important. It is noteworthy that vial pads must be replaced with new ones. Otherwise, the quantitative results will be affected. And here we will...

Mardi 30 juillet 2019

Since its birth, the QuEChERS method has been widely used in pesticide residue analysis due to its unique advantages and characteristics of fast, simple and cheap. Lehotay et al. established a method, which uses the QuEChERS method to treat samples and analyze 229 kinds of pesticides...

Mardi 30 juillet 2019

This article will focus on the methods of using the bottle-top dispensers. 1. Put the intake pipe into the dispenser and then tighten the nut. 2. Put the drain pipe into the dispenser and then tighten it. 3. Take off the cap of the drain pipe and put it under the drain pipe 4. Adjust...

Mardi 23 juillet 2019

White Portland cement or white ordinary Portland cement (WOPC) is similar to ordinary, gray Portland cement in all respects except for its high degree of whiteness. Obtaining this color requires substantial modification to the method of manufacture, and because of this, it is somewhat...

Mardi 23 juillet 2019

Description of Calcium aluminate cement Calcium aluminate cement, alumina cements or high alumina cements are obtained by the reaction at high temperature of lime (from limestone) and alumina (contained in natural minerals like bauxite). The product obtained after cooling is a hard mineral...

Vendredi 19 juillet 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...

Mardi 16 juillet 2019

Bulk Density Tester BeDensi B1 bulk density testing equipment adopts natural deposition method. Its manufacturing standard meets the criterion of GB / T16913.3-1997- Part III: Determination of bulk density. Measurement: Bulk density Testing sample: except for metal powder Technology...

Mardi 16 juillet 2019

Bulk Density Meter BeDensi B1-S bulk density meter uses Scott capacity meter method to measure bulk density of various metal powder. Manufacturing standard of BeDensi B1-S bulk density test apparatus meets the criterion of GB / T5060-1985 (ISO 3923/2). Measurement: Bulk density Testing sample...

Mardi 16 juillet 2019

Image Particle Size and Particle Shape Analyzer BeVision S1 employs the latest software particle image processing technology for the traditional microscope imaging method, providing intuitive and accurate particle size distribution analysis. BeVision S1 is widely used in particle...

Mardi 16 juillet 2019

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability With the update of the instrument and the...

Mardi 16 juillet 2019

Particle size measurement using static light scattering The particle size distribution as a parameter to specify a powder or dispersion plays a central role in many applications. Examples are construction material (sands, cements), pharmaceutical development, lime stones, ceramics...

Lundi 15 juillet 2019

Syringe filters are widely used in laboratories. The users do not need to change membranes and clean filters, which can save complex and time-consuming preparations. It is very convenient and easy to operate. They are mainly used in sample pre-filtration, clarification, degerming of particles...

Lundi 15 juillet 2019

The sample vials were cleaned according to different contamination levels. Generally, the cleaning method is selected according to the degree of pollution. If the cost is adequate, it is best to use a new one every time. Solution method of cleaning sample vials: 1. Rinse with running...

Lundi 15 juillet 2019

The solid phase extraction cartridges (SPE column, or Solid Phase Extraction Cartridges, or SPE cartridges for short) is a sample pretreatment device for extraction, separation and concentration developed from a chromatography column. Mainly used in sample pretreatment of various foods...

Vendredi 12 juillet 2019

Characteristics of QuEChERS QuEChERS is a pretreatment method for pesticide residue detection. This paper refers to the products produced by our company. Its name comes from the acronyms of the words “Quick, Easy, Cheap, Effective, Rugged, Safe”, which are also the characteristics...

Vendredi 12 juillet 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...

Jeudi 11 juillet 2019

First, the purpose of the request The colorectal flora in water was determined by the membrane method. Second, the basic principles The filter membrane method uses a filter to filter the water sample, and the bacteria are trapped on the filter membrane, and then the filter membrane...

Mercredi 10 juillet 2019

According to the research from the United States Department of Agriculture, the QuEChERS meth od which extracts pesticide from foods is fast, convenient, cheap, effective and secure. When it compares to the traditional SPE method, QuEChERS not only uses less solvent but also adopts...

Mardi 09 juillet 2019

The cleaning of sample vial is very important. Usually, according to the principle of glass instrument washing and the degree of pollution to choose cleaning methods, there is no fixed mode. The specific methods are as follows: Method one: 1. Dry the sample in the sample vial. 2...

Mardi 09 juillet 2019

First, the purpose of the request The colorectal flora in water was determined by the membrane method. Second, the basic principles The filter membrane method uses a filter to filter the water sample, and the bacteria are trapped on the filter membrane, and then the filter membrane...

Lundi 08 juillet 2019

QuEChERS is a pretreatment that has the characteristics of Quick、Easy、Cheap、Effective、Rugged and Safe, which is the reason why it is becoming more and more popular in the new testing methods. It was developed by Professor Anastassiades in 2003, which was used in agricultural testing at first...

Dimanche 07 juillet 2019

Performance characteristics of low temperature chamber： 1. In the refrigeration system, the condensation adopts air cooling mode, which has a wide temperature control range, which can meet the user's various needs. 2. With a unique balanced temperature control method, with stable...