EXPERIMENTS - 591 Anuncios

Miércoles 31 julio 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...

Martes 30 julio 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...

Lunes 15 julio 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...

Lunes 15 julio 2019

Laboratory data show that the optimum flow rate of silica gel flash columns is decided by the length and width of columns and the property of gel. To be more specific, longer and narrower columns will provide more theoretical plates which are able to affect the flow rate. When referring...

Viernes 12 julio 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...

Jueves 11 julio 2019

1. Aspiration and drainage Vertical aspiration; the tip of the tip is immersed in the liquid surface below 3mm. The tip of the tip is pre-flushed in the liquid before the aspiration; slow suction and slow release; if the amount is small when the liquid is discharged, the tip of the...

Jueves 11 julio 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...

Martes 09 julio 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...

Lunes 08 julio 2019

Nowadays customers are now more concerned with the quality of the filter, especially the extractable level of the filter media. A low backgrounding and super clean filter media with no or extremely low HPLC extractables can keep the experiment without unwanted column peak. In Hawach Scientific...

Lunes 08 julio 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...

Lunes 08 julio 2019

People should face are a lot of problems when using SPE cartridges. As a consequence, we will talk about why the cartridge has a low recovery rate in the experiments. The first reason for the low recovery rate is that the target object does not remain sufficiently on the fillers....

Domingo 07 julio 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...

Viernes 05 julio 2019

The product mainly includes two parts: extraction boxes and purification boxes. Extraction boxes include salt bags and 50 ml centrifugal tubes. Due to the high transportation cost of 50 ml centrifugal tubes and the general unacceptability of customer laboratories, more customers will...

Viernes 05 julio 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...

Jueves 04 julio 2019

The silicon hydroxyl group with strongly polar on the surface of glass sample vials will adsorb the samples. Based on such reasons, people produce hydrophobic glass surface through silylating the sample vials in order to eliminate the adsorption of the sample vials, which is widely...

Miércoles 03 julio 2019

Chromatographic analysis technology has been widely used nowadays. It is quite important to clean the chromatographic sample vials carefully. When the number of samples is enormous, a large number of chromatographic sample vials need to be cleaned during the experiments. If the sample...

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...

Lunes 01 julio 2019

Usually, there are two essential properties that end users are the most—extractability of the impurities and advantages of microporous polymer membranes. Extractability of The Impurities Scientific laboratories mostly apply the membrane product to filter samples, mobile phase, and...

Lunes 24 junio 2019

When selecting the customer, it is recommended to first confirm the vacuum and pumping speed required for the experiment, or you can choose according to the application. The main uses of Standard Diaphragm Vacuum Pumps include the following: 1. Vacuum drying oven: It is suitable...

Miércoles 12 junio 2019

When filter paper is used in experiments, it is mostly used together with filter funnel and Brinell funnel. The filter papers should be folded into a suitable shape before using. But it should be noted that do not over fold, because this will lead to the breakage of filter paper....

Viernes 07 junio 2019

If you want to dispense an aliquot of liquid from bottles, the bottle-top dispensers always provide the best results for your lab in the way of productively dispensing and no reagent wasting. Depending on what you need, the important factors of choosing the bottle-top dispenser include...

Miércoles 05 junio 2019

Some customers will react to their own PCR experiments. During the experiment, a large amount of long-term pipetting work has caused a great burden on their hands and caused certain damage! In fact, this situation is not uncommon, but everyone has not noticed it. As early as the end...

Miércoles 05 junio 2019

Some customers will react to their own PCR experiments. During the experiment, a large amount of long-term pipetting work has caused a great burden on their hands and caused certain damage! In fact, this situation is not uncommon, but everyone has not noticed it. As early as the end...

Miércoles 05 junio 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...

Martes 02 abril 2019

- Industrial High Temperature Heat Pump Overview - Industry 90℃ high temperature heat pump water heater this is newest technology in the air source heat pump line, by R410A + R134a refrigerant combine inside, using Mitsubishi R410A DC inverter compressor as the first stage and R134a...

Domingo 18 noviembre 2018

Cantidad : TRÈS GRAND - Precio : TRÈS COMPÉTITIF

troducción Abierto a la innovación y a la competitividad, sensible a la modernización, cuidadoso del desarrollo económico de la región de Souss Massa; la sociedad HL PRIMEURS favorece un enriquecimiento a la cultura calidad. Nuestra sociedad quiere alcanzar sus objetivos con una eficiencia...

Martes 28 agosto 2018

Cantidad : at least 4 - Precio : USD 10-470

The JMZ-T series anti vibration mount is the new designed model, which is designed especially for the military use. Comparing with the wire rope isolators, this model is small and tinny, which has no worrying about the space limits. The max static load of the JMZ-T Series anti vibration...

Sábado 04 agosto 2018

Cantidad : 100 - Precio : USD2000-5000

- Performance characteristics of low temperature test 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...

Sábado 04 agosto 2018

Cantidad : 100 - Precio : USD2000-5000

- Heating Circulator UC series with function from high temperature to cooling process, from 300℃~50℃. - Equipped with heating cooling container, with large heat transfer area, fast heat-up and cool-down, small heat transfer oil demand. - the heating cooling circulator Can heat-up...

Miércoles 20 junio 2018

Cantidad : 1piece - Precio : USD2100

1.Description of hydraulic piston dead weight tester pressure calibrator: YS series Piston DWT is a high accuracy high reproducibility and high reliability of the standard pressure measuring instruments based onPascal's law and the principle of hydrostatic equilibrium produced. Mainly...