QUANTITATIVE - 290 ads
Tuesday, September 17, 2019
Hawach Scientific product quality in strict accordance with ISO9001: 2000 quality system certification procedures, and from now on we have exported to more than 120 countries. Overview of qualitative filter paper, analysis laboratory commonly used filter paper as a filter medium,...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, September 12, 2019
Concrete mixer lorry 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...
Hunan Teila Heavy Industry Machinery Service Co., Ltd.
- 411100 - hunan
- +18 1 53 79 28 25
- '073152819056
Thursday, September 12, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Tuesday, September 10, 2019
Qualitative filter papers are widely used for general filtration in the lab. Made of cellulose fiber, they are manufactured from high-quality cotton linters with the treatment of maximizing alpha cellulose. With the highest degree of polymerization, Alpha cellulose is recommended...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, August 15, 2019
Background Technique The wood pulp with a characteristic of single fiber, has been serving as the only raw material of the quantitative filter paper. To improve its filtering accuracy, the pore size has to be reduced, which can increase the filtering resistance and shorten the practical...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Tuesday, August 13, 2019
Filtration is a kind of physical changes which separate solid impurities from the liquid through porous filter media, only fluid can pass by the porous filter media. So the degree of retention determines the separation efficiency. Hawach provides various options to satisfy every laboratory...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, August 09, 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....
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Wednesday, August 07, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Monday, August 05, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, August 01, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Wednesday, July 31, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Tuesday, July 30, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, July 12, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, July 12, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Wednesday, July 10, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Wednesday, July 10, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Monday, July 08, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, July 05, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, July 04, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Tuesday, July 02, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Monday, June 24, 2019
Price : 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...
Hunan Teila Heavy Industry Machinery Service Co., Ltd.
- 411100 - hunan
- +18 1 53 79 28 25
- '073152819056
Monday, June 24, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, June 21, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, June 20, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, June 13, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Wednesday, June 12, 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....
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Friday, June 07, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Thursday, June 06, 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...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33