EXPERIMENTAL - 342 ads

Tuesday, September 10, 2019

1. Advantages and disadvantages of commonly used extraction solvents Acetonitrile: easy to salt out; compatible with LC/MS; difficult to concentrate Acetone: not easy to salt out; easy to volatilize, concentrate Ethyl acetate: immiscible with water; less extraction of impurities;...

Thursday, August 15, 2019

In the detection of air pollution, taking samples with glass fiber extraction thimble is a common method. And here we will focus on one reason having an influence on weighing the extraction thimbles, which is the air humidity. As we all know, the environment when analyzing is limited...

Friday, August 09, 2019

- Some Tips In QuEChERS D-SPE? - Why choose anhydrous magnesium sulfate as a water remover? In the d-SPE purification process, the moisture content plays a crucial role in the purification effect of PSA. The lower the moisture content, the better the purification effect of PSA. Experiments...

Friday, August 09, 2019

What is the bottle-top dispenser? During a scientific experiment, a bottle-top dispenser can indicate its excellent precision and high-repetition of separating operation without wasting solvents. While handling with some corrosive liquids or solvents, it provides safety assurance...

Friday, August 09, 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, August 07, 2019

This product is just what you need, except for the extremely special cases in those days, and when you want to try new technology, you use this economical and practical model, the material is very secure, and it is also easy to purchase, so it is the best choice in the laboratory...

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...

Monday, August 05, 2019

Category of extraction thimbles In terms of the material, extraction thimbles series in Hawach are divided into three main types – cellulose and glass fiber extraction thimble. However, the quartz one can not be manufactured in China, so the other two are currently occupying all thimbles...

Monday, July 15, 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...

Friday, July 12, 2019

Hawach ensures the accuracy of each sample vial and cap specification, from the initial design to the final photoelectric scanning inspection process, our strict tolerance control throughout the entire manufacturing process. Integrity, cleanliness, and uniformity of a sample vial...

Thursday, July 11, 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...

Tuesday, July 09, 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...

Monday, July 08, 2019

Single-Channel Manual Pipette Features Tip the pop-up button for one-handed operation. The handle hook can be easily attached to the palm of your hand. Clear readings. The tip retracting rod and nozzle can be removed for easy cleaning and maintenance. Rotatable dispensing head makes...

Friday, July 05, 2019

The equipment and equipment in the laboratory are as comprehensive as the natural world. They say that the sparrows are small and complete, but in the laboratory, the same small but indispensable instrument has a micropipette</ strong> for biochemistry. An essential tool for...

Tuesday, July 02, 2019

Stainless Steel Filtration System Product Introduction Hawach stainles s steel filtration system is widely used in research units, inspection and quarantine institutions, quality monitoring institutions, natural mineral water industry, drinking water industry, the pharmaceutical industry...

Monday, July 01, 2019

This is a useful weapon for experimental analysts to filter micro-samples quickly and effectively, such as sample pre-filtration, clarification, and filtration of particles, liquids, and gases sterilizing, etc. The structure of Hawach syringe filter The structure of Hawach syringe...

Tuesday, June 18, 2019

As an indispensable experimental instrument for laboratory liquid operation, the bottle-top dispenser has the following characteristics. (1) The setting operation is simple, and the protective gloves can be worn to operate directly in the process of operation. In addition, it has...

Friday, June 07, 2019

QuEChERS method was originally applied to extract pesticides from fruits and vegetables. Whether under AOAC or EN stipulations, according to our products' Application and Test Report, we can see that the combination of salting out and d-SPE-purification in the initial liquid-liquid...

Wednesday, June 05, 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, December 14, 2018

- Fireproof Aluminum Composite Panel - Fireproof aluminium composite panel refers to a new type of decorative materials which has a series of excellent performance. It has been widely applied in curtain wall, indoor and outdoor decoration and other fields since it's created opening...

Friday, December 14, 2018

- PE Aluminum Composite Panel - PE aluminum composite panel is generally used for interior wall decoration. Polyester paint (PE): >0.016mm measured with a film thickness meter and wiped with butanone 100 times without exposure.The PE coating formed on the surface of the composite...

Tuesday, July 17, 2018

VR Virtual Experience Training System for Electric Safety Accidents This project is to appear the accident at scene, it can make students enjoy realistic experience about the injuries and damages; the viewers can see all kinds of breakdown during the simulation of real scene, they...

Thursday, December 21, 2017

Building material decomposition smoke density testing machine for the stability of the material smoke smoke toxic hazard classification, does not apply to non-stable smoke smoke toxic hazard classification. Standards compliant: GB / T20285-2006 "Hazardous Classification of Tobacco...

Friday, December 15, 2017

Quantity : 1-10 - Price : 10 000,00 €

Zhejiang YOUJI Machinery Technology Co.,Ltd. valve test bench JWT type welding type hydraulic valve testing bench, to both sides of the host frame seal disc and welding the inner hole of the valve for positioning and welding groove of the valve is sealed. By moving the machine...

Saturday, November 04, 2017

Technical Parameters： It's great significant for AFC-133 filter test bench to optimize and develop filter materials, ensure quality assurance of the production process. Dust capacity and filtration efficiency are the most interesting properties of filter material properties, depending...

Friday, October 27, 2017

Plate thermal conductivity tester is used to test the thermal conductivity of refractory insulation, ceramic fiber, felt, textile, plate, brick and other materials at different temperatures. Plate thermal conductivity tester Standards compliant: GB / T 17911-2006 "Test method for...

Friday, October 27, 2017

Building material decomposition smoke density testing machine for the stability of the material smoke smoke toxic hazard classification, does not apply to non-stable smoke smoke toxic hazard classification. Standards compliant: GB / T20285-2006 "Hazardous Classification of Tobacco...

Friday, October 27, 2017

According to GB / T8626, ISO11925 development, suitable for the absence of external radiation conditions, with a small flame directly impact the vertical placement of the sample to determine the flammability of building products. Applicable to category B, C, D, E, Bfl, Cfl, Dfl and...

Friday, October 27, 2017

According to GB / T8626, ISO11925 development, suitable for the absence of external radiation conditions, with a small flame directly impact the vertical placement of the sample to determine the flammability of building products. Applicable to category B, C, D, E, Bfl, Cfl, Dfl and...

Friday, October 27, 2017

Rubber wheel abrasive wear tester-According to ASTM G65-04 standard, under certain test conditions, the use of sliding friction in the form of engineering plastics, powder metallurgy, alloy bearings and other performance. main feature: 1. consists of two parts: host and control system; 2...