QUANTITATIVE - 310 Annonces

Jeudi 01 août 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...

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

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...

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...

Vendredi 12 juillet 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...

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...

Mercredi 10 juillet 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...

Mercredi 10 juillet 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...

Lundi 08 juillet 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...

Vendredi 05 juillet 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...

Jeudi 04 juillet 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...

Mardi 02 juillet 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...

Lundi 24 juin 2019

Prix : 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...

Lundi 24 juin 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...

Vendredi 21 juin 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...

Jeudi 20 juin 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...

Jeudi 13 juin 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...

Mercredi 12 juin 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....

Vendredi 07 juin 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...

Jeudi 06 juin 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...

Mercredi 05 juin 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...

Samedi 01 juin 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...

Mercredi 13 juin 2018

Quantité : 1000/month - Prix : 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...

Vendredi 08 juin 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...

Mercredi 23 mai 2018

Quantité : 9999999999 - Prix : 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...

Vendredi 02 février 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...

Jeudi 21 décembre 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...

Samedi 04 novembre 2017

Basic Func tion of 1 Ton Dispenser 1.Quantitative 2.Self-stop 3.High precision measurement 0.3 Accuracy 4.High and low-level alarm 5.Level visualization 6.Pouring function 7.Insulation 8. Anti-explosive 9.Capacity 1000Liters Optional Function of 1 Ton Adblue Dispensers 1. IC card 2...

Samedi 04 novembre 2017

Product introduction 4 Tons Dispenser Basic function 1.Quantitative 2.Self-stop 3.High precision measurement 0.3 Accuracy 4.High and low-level alarm 5.Pouring function 6.Insulation 7.Anti-explosive 8.Capacity 4000Liters Optional Function of 4 Tons Dispenser 1. IC card 2.Printer 3...

Samedi 04 novembre 2017

Product function of New-Blue 40-L Self-Sealing Dispenser Self stop Quantitative Quick Preset dispensing Waterproof and dust-proof Overall p arameter of New-Blue 40-L Self-Sealing Smart Dispenser L*W*H（mm) : 520*309*396 Net weight : 27KG Gross weight : 32KG Basic confi guration of...