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Friday 09 August 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 09 August 2019

Filter Paper is a tool commonly found in chemical laboratories for separation of two-phase, and usually round in shape. To filter two phases so as to separate and purify matter, most of the filter paper is made of cotton fiber and is made in different ways for different purposes....

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...

Monday 05 August 2019

Hawach filter paper is used for removing contaminated particles from liquids and gases. The design of a filter paper must try its best to strike a balance among various indexes so as to effectively protect the system to be filtered. Production of a filter paper It is that a variety...

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...

Wednesday 31 July 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...

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...

Monday 15 July 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 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...

Wednesday 10 July 2019

A bottle-top dispenser is a device installed at the mouth of a solvent bottle to take a large amount of solution and has been constantly updated and improved to meet the growing operational requirements of the laboratory for more than ten years. There are two kinds of bottle-top dispensers...

Wednesday 10 July 2019

The biggest feature of filter paper is paper with good filtration performance. At present, the filter papers produced in China mainly include quantitative analysis filter paper, qualitative analysis filter paper and chromatographic qualitative analysis filter paper. Quantitative filter...

Monday 08 July 2019

Hawach Scientific is a modern enterprise contains well integration of R&D, production, sales, and after-sales services. We have a sales team for filter paper, after more than 16 years promotion, the high praise from the market for our quality and services, filter papers have various...

Friday 05 July 2019

1. Product No., for example BIO-1. 2. Pore size and flow rate, The bigger pore size, the quicker flow rate. Fast: 60-100S/100ML @ 80-120μm Medium: 100-160 S/100ML@30-50μm Slow：160-200 S/100ML @ 1-3 μm But filter paper is different from filter membrane, the pore size cannot be a certain value...

Thursday 04 July 2019

Hawach Scientific have Qualitative filter paper and Quantitative filter paper, Wet-strengthened filter paper and Asphalt filter paper, right now we also have filter paper for Extraction. Just as mention before, we are a professional manufacturer for filter paper, we have the regular...

Tuesday 02 July 2019

1. Product No., for example BIO-1. 2. Pore size and flow rate, The bigger pore size, the quicker flow rate. Fast: 60-100S/100ML @ 80-120μm Medium: 100-160 S/100ML@30-50μm Slow：160-200 S/100ML @ 1-3 μm But filter paper is different from filter membrane, the pore size cannot be a certain value...

Monday 24 June 2019

Precio : USD44,000 to USD17,0

Concrete mixer pump truck is a special truck used to transport concrete used in construction, Because of its appearance, it is often called the field screw truck, olive truck. These trucks are equipped with cylindrical agitators to carry the mixed concrete. During the transportation...

Monday 24 June 2019

When using filter paper, we should pay attention to the fact that when the filter paper is not displayed on the paper box of the filter paper, the precipitation should be paid attention to when using the quantitative and qualitative analysis filter papers. (1) Natural filtration is...

Friday 21 June 2019

The cation chromatography column is a kind of high-performance liquid chromatography, which is a liquid chromatography method for analyzing anions and cations. The method has the advantages of good selectivity, sensitivity, rapidity, and simplicity, and can simultaneously measure...

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...

Thursday 13 June 2019

Hawach Scientific work for filter paper for more than 16 years, we are happy to see our products exported to the United States, UK, Germany, Dubai, Thailand, South Korea, and other countries. We are not satisfied with our present achievement, this year our R&D department have good news...

Wednesday 12 June 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....

Friday 07 June 2019

As mentioned before, Hawach Scientific is a dedicated manufacturer who focuses on R&D, manufacture, and marketing of micro-porous filtration and laboratory consumables products under ISO9001 quality management system. Today we'd like to introduce you how to purchase filter paper from Hawach...

Thursday 06 June 2019

As one of the useful sample preparation technique, solid phase extraction can prevent many problems, such as incomplete phase separations, recoveries with poor quantity, waste of expensive fragile glassware, and extra disposal of organic solvents, which you may occur if you use the...

Wednesday 05 June 2019

Here we talk about the following four kinds of common filter papers about their constitution and characteristic that we can distinguish them. The first one is PP filter paper. PP filter paper is made from polypropylene as the raw material through a proprietary hot melt process, which...

Saturday 01 June 2019

General Categories of Filter Papers All the Filter Papers of Hawach Scientific Co., Ltd are made of cotton fiber, which can also be divided into qualitative filter papers and quantitative filter papers. The former can be confirmed its compositions and possesses a standard level and...

Wednesday 13 June 2018

Cantidad : 1000/month - Precio : 1000-10000USD/set

1. Keep workplace clean 2. Only need 1 operator, 2-4 times faster than manual work 3. Filling Speed: 1 g/s~8g/s(adjustable) 4. Accurate quantitative precision can be 0.01g Model DF2-1 DF2-2 Filling nozzles 2 2 Filling material 90, 80, 70, 60, 50 down (dry) Dimension Main body tank: 2...

Friday 08 June 2018

Product features of automatic harness taping machine. 1. The equipment is durable and compatible with different types of adhesive tape (such as duct tape, PVC tape, etc.). 2. Keep flat and wrinkle-free, and ensure that each coil of duct tape is covered with 1/5-1/2 of the previous lap...

Wednesday 23 May 2018

Cantidad : 9999999999 - Precio : Negotiable

DVTCK5263 CNC Double Column Vertical Lathe in china 1. The most advanced production technology of vertical lathe, modularization design and analysis of infinite elements are adopted to integrate machine, electricity and hydraulics the advanced technology, which represents high-precision...

Friday 02 February 2018

Introduction to Pellet Packing Machine Pellet packing is usually the last step in pellet production line. Pellet packing done by manpower will decrease labor intensity and working efficiency in large scale production. Here you can opt pellet packing machine also named weighing and...