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Bottle-Top Dispensers Features And Tips

Thursday, August 01, 2019

Hawach bottle-top dispensers help to simplify the routine liquid transfer operation and are widely used in all kinds of liquid reagents – buffer solution, medium, vitamin solution, acid, alkali, salt solution or a variety of polar solution. Bottle-top dispensers can meet the needs...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Several Attentions about Using and Maintaining Chromatographic Columns

Thursday, August 01, 2019

It is important for the experimenters to use and maintain chromatographic columns correctly. They should focus on many some things so as to protect the columns in the using process. Here we talk about several attentions. Avoid changing pressure and temperature dramatically and any...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Selection and Sample Loading Mode of Flash Column

Wednesday, July 31, 2019

- The Selection Principle of Silica Gel Column - Commonly, the maximum sample loading volume of a silica gel column is about 1/20 of the volume of the column's silica gel. However, as a practical matter, specific sample loading volume should be decided by each constituent's degree...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Model Of Solid Phase Extraction

Wednesday, July 31, 2019

Solid phase extraction (SPE), developed in the 1970s, can replace the traditional liquid-liquid extraction in many fields and has been applied more and more widely in the laboratory. The common solvent of SPE Hexane, isooctane, tetrahalide carbon, trihalomethane, dihalomethane, tetrahydrofuran...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Learn About Vacuum Filtration Pumps

Tuesday, July 30, 2019

Increasing the rate of filtration through the force on the solution over gravity, vacuum filtration is an operation of evacuating the air below the filter paper to maintain the pressure differential across the filter medium. It is widely applied in the laboratory for various tests...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Use Of Silica Gel Flash Columns

Monday, July 15, 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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Use of Microporous Membrane

Monday, July 15, 2019

Laboratory workers use a membrane to filter two phases. Actually, the membrane is a kind of media. According to different aperture sizes, filter membranes can be divided into the microporous membrane, ultrafiltration membrane, nanofiltration membrane a nd reverse osmosis membranes...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
What are the Advantages and Principles of the SPE Cartridges?

Monday, July 15, 2019

The solid phase extraction cartridges (SPE column, or Solid Phase Extraction Cartridges, or SPE cartridges for short) is a sample pretreatment device for extraction, separation and concentration developed from a chromatography column. Mainly used in sample pretreatment of various foods...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Introduction of Vacuum Filtration

Friday, July 12, 2019

Hawach vacuum filtration device is a kind of equipment which uses vacuum negative pressure as a driving force to realize solid-liquid separation. In structure, the filter section extends along the horizontal length direction and can complete filtering, washing, drying, and regeneration...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Indonesia 70111 B2B Services
Mimaki JV33 / JV5 Print Head - M007947 - 1440 dpi - 8 kHz

Thursday, July 11, 2019

The Mimaki JV33/JV5 printhead is either used in 4-colours or 6-colours and has a minimum, variable droplet size of 1.5 pico litre (max. droplet size is 21 pico litre). The typical firing frequency for this print head is 8 kHz. It is a new generation printhead that allows fast speed...

PT. Printheadunit

  • 70111 - Banjarmasin
  • +62 (0511) 3359368
Indonesia 70111 B2B Services
JV34-260 Print Head ID Set - M010792

Thursday, July 11, 2019

The JV34-260 Printhead ID Set can be used in 4-colour or 8-colour printers and has a minimum, variable droplet size of 1.5 pico litre (max. droplet size is 21 pico litre). The typical firing frequency for the JV34-260 Printhead ID Set is 8 kHz. The JV34-260 Printhead ID Set solvent...

PT. Printheadunit

  • 70111 - Banjarmasin
  • +62 (0511) 3359368
Pipette Precautions

Thursday, July 11, 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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Filter Cartridges

Thursday, July 11, 2019

Filter cartridges are purification equipment, with long service life, strong pollution capacity and low pressure and other characteristics, which are suitable for pharmaceutical, food, petroleum, electronic, chemical, metallurgical and textile industries. Features of filter cartridges 1...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Determination of Coliforms in Water by Filter Membrane Method

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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
QuEChERS Methods

Wednesday, July 10, 2019

According to the research from the United States Department of Agriculture, the QuEChERS meth od which extracts pesticide from foods is fast, convenient, cheap, effective and secure. When it compares to the traditional SPE method, QuEChERS not only uses less solvent but also adopts...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Features and Applications of Cellulose Extraction Thimbles

Wednesday, July 10, 2019

Cellulose extraction thimbles are widely used in Soxhlet extractors. Soxhlet extraction is a widely used technology to analyze lipids or pesticides in food and soil materials and others. Soxhlet extraction is the continuous extraction of the required components in the solid mixture...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
What is the Bottle-Top Dispenser?

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
The Method Of Cleaning Sample Vial

Tuesday, July 09, 2019

The cleaning of sample vial is very important. Usually, according to the principle of glass instrument washing and the degree of pollution to choose cleaning methods, there is no fixed mode. The specific methods are as follows: Method one: 1. Dry the sample in the sample vial. 2...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Melt-Blown Filter Cartridges (MBPP)

Tuesday, July 09, 2019

Melt-blown filter cartridges are shaped filter cartridges, which made of non-toxic and odorless polypropylene particles after heating, melting, spinning, traction. Melt-blown filter cartridges are not only used in water purification, but also have excellent chemical compatibility...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Determination of Coliforms in Water by Filter Membrane Method

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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
How to Clean the HPLC Columns

Tuesday, July 09, 2019

The reversed-phase HPLC columns may be repeatedly injected into a sample containing a strongly retained material, and in particular, the sorbent components such as large molecular weight or hydrophobic biological flow proteins and strong alkaline substances may be adsorbed on the silica medium...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Overview of SPE Technique

Monday, July 08, 2019

SPE Technique Introduction SPE(Solid-phase Extraction), is an increasingly popularized technology of sample pretreatment, which is established on the basis of traditional LLE(Liquid-liquid Extraction). Combined with the substance interaction mechanism that like dissolves like, and...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Hawach Flash Chromatography Column

Monday, July 08, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Preparation of Mobile Phase of HPLC Column

Monday, July 08, 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...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Oilless Diaphragm Vacuum Pump

Friday, July 05, 2019

Hawach scientific is a professional vacuum pump manufacturers, product quality through a number of international standards, and exported to more than 120 countries all over the world. More detail information and quotation about the products contact with info@hawach.com. Diaphragm...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Benefits of Bottle-Top Dispenser

Friday, July 05, 2019

Generally speaking, bottle-top dispenser which is a scientific device could improve the wide application, safety performance, speed and reliability. In addition, it could save your time and work, even protect you and your samples. To be more specific, the advantages of the bottle-top...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
C8 HPLC Columns

Thursday, July 04, 2019

C8 HPLC columns are used to isolate many organic compounds, which are one of the reversed phase silica gel columns. The maintenance of C8 HPLC columns requires organic solvents. Chromatographic grade methanol is recommended and different brands of chromatographic columns should be...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Polymeric HLB SPE Cartridges

Thursday, July 04, 2019

The filler of polymeric HLB SPE cartridges produced by a special copolymerization technology contains a certain proportion of the hydrophilic group and the hydrophobic group. Hydrophobic divinyl benzene structures retain nonpolar compounds and hydrophilic n-vinyl pyrrolidone structures...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The History Of Flash Column Chromatography

Thursday, July 04, 2019

Flash column chromatography method is to separate the constituents from the mixture and thus purify it. In a word, flash column chromatography makes the samples go through the column which is filled with gel to achieve separation. In the beginning, the founder of flash column chromatography, Mr...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Introduction and Classification of Capsule Filter

Thursday, July 04, 2019

Brief introduction of the capsule filter The bag filter is also called abandoned filter. Its shell is made of high-temperature polypropylene material. The inner filter core is made of folded filter core welded together by hot fusion. It is suitable for filtering small doses of liquid...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
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