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A Brief Introduction of QuEChERS

Thursday, July 04, 2019

As an acronym for Quick, Easy, Cheap, Effective, Rugged and Safe, the method of QuEChERS achieves as a variety of sample preparation and clean-up techniques for the analysis of multiple pesticide residues in the field of agriculture. Originally designed for the analysis of fruits and vegetables...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Hawach 7 Steps Help You Choose the Right Filter Paper

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
Classification of Filter

Tuesday, July 02, 2019

In this article, we want to clarify the syringe filter. Each of the different syringe filters is applied to the specific product Which the various syringe filter is worth seeing more and what are the right steps and methods to have a try. Classification by membrane The filtration...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Cleaning Silica Gel Bonded HPLC Columns

Tuesday, July 02, 2019

The key to regenerating contaminated HPLC columns is to know the nature of the contaminants and to find the right solvent to remove. If contamination is caused by the accumulation of strongly retained materials during repeated injections, simple steps to remove these contaminants...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 100020 B2B Services
Business Setup in China

Monday, July 01, 2019

With the accession to WTO, China is becoming a more and more international market. Most of the Fortune 500 multinational companies have come to China and achieved significant growth as a result. Not limited to multinationals,, thousands of small and medium size companies have china...

Lee & Lee Associates

  • 100020 - beijing
  • 86 10 6593 5066
How to Clean A Bottle-top Dispenser for Long-term Storage

Monday, June 24, 2019

Today, we're going to show you how to clean a bottle-top dispenser. Before we get it started, let's prepare a bottle of neutralization liquid, a bottle of distilled water, a bottle of the ethanol-glycerol mixture, a soft brush and a pipe cleaner. Now, let's follow the steps below...

Hawach Scientific Co.,Ltd.

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

Monday, June 24, 2019

Vacuum filtrations are based on the principle that oil and water vaporization temperature is different (water vaporization temperature is lower than oil vaporization temperature) under the same pressure. Vacuum filtrations are a kind of paper filter equipment with the features of...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 201505 Equipment goods
Energy Recovery Ventilator Heat Pump

Sunday, June 23, 2019

Nowadays, the standards of people's living are improving, not only to install air-conditioning, floor heating, and better-conditioned homes,but also to install ventilator, dehumidification and other equipment. A person with insights who is more environmentally conscious, and also...

How to Use the Pipette?

Friday, June 21, 2019

1. Capacity setting For the adjustable pipette, it is usually operated in the range of 10% to 100%. The optimal pipetting capacity is in the range of 35% to 100%. At this time, it is less affected by the operation technique and can better protect the pipetting. Accuracy and precision...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
The Solution To Clarify Your Solvent And Sample – Syringe Filter

Friday, June 21, 2019

We can always hear such a conversation between those researchers. “Hey, buddy, what is your purity degree of the end products today?” “Damn it. Such a low degree that I cannot even use for the next step. Any better methods for clarifying raw materials?” Then there comes Hawach syringe filter...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Introduction of Sampling System for Cationic Chromatographic Columns

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
How does SPE Cartridge Work?

Friday, June 21, 2019

Normally SPE cartridge has two basic adsorption modes: target compound adsorption mode, impurity adsorption mode; 5 operation modes: gravity operation, manual positive pressure, centrifuge, negative pressure and positive pressure mode. Now let's review the whole process step by step...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Easy to Understand the QuEChERS

Wednesday, June 19, 2019

Take the example of pear test to check whether a pear is up to the standard. Prepare the environment The first step: Suitable Acetonitrile salting-out extraction environment was prepared. Make the pears into a puree, take 10g to QuEChERS centrifuge tube of 50ml. Add extract solution...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 214115 Construction goods
Chiller/Chilled System

Tuesday, June 18, 2019

Industrial chiller is also known as industrial water cooled chiller, screw chiller, fluid cooler, produced by Wuxi LNEYA chiller Company as professional top chiller manufacturers and supplier of cold water machine, deep refrigeration industry, with its high-quality customer service...

China 214115 Construction goods
Glycol Cooling Heating Control System

Tuesday, June 18, 2019

Application: The tested object is attached to a test platform adapter. The inside of the part was cooled and heated by an aqueous solution of ethylene glycol. The test component needs to undergo a specific temperature profile and record changes in temperature. Temperature variations...

Hawach High-Performance Extraction Thimbles

Tuesday, June 18, 2019

A more efficient way to extract compounds from solid materials—Soxhlet extraction (also known as sand extraction). In the laboratory, Soxhlet extractor uses solvent reflux and siphon principle, so that the solid substance is continuously extracted by pure solvent, which saves solvent...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Installation of the HPLC Column

Tuesday, June 11, 2019

The installation of the HPLC column should be carried out in the following three steps: a. Unpack the HPLC column and confirm the type, size, date of manufacture, and solvent stored in the column. b. Unscrew the sealing plug from the joints at both ends of the column and put it back...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 523960 Shoes and leather
Athletic Shoes Insoles Stylish Step PU Poron Foam Insoles ZG-332

Monday, June 10, 2019

Athletic Series Insole Poron Foam Insoles ZG-332 - Improve step balance and foot strength. - Anti-skidding, shock-absorbing and depressurizing. - Reduce the damage to the foot due to vibration. - Applicable for all kinds of sport shoes, hiking shoes and working shoes. - Can help reduce...

Dongguan Zhiguo New Material Technology Co., Ltd.

  • 523960 - dongguan
  • 0769 85031810
China 523960 Shoes and leather
Wholesale Super Soft PU Synthetic Insole For Child ZG-475

Monday, June 10, 2019

- Insole For Kids ZG-475 - 1. Anti-Microbial Top Fabric: Reduces heat and friction while performing strenuous activity, keeping your feet healthier and more comfortable. 2. An ideal orthotic for preventing and alleviating pain associated with plantar fasciitis and other common foot conditions...

Dongguan Zhiguo New Material Technology Co., Ltd.

  • 523960 - dongguan
  • 0769 85031810
China 510000 Equipment goods
MJ-WD350R SMT Assembly Lead Free Wave Soldering Equipment

Monday, June 10, 2019

Features The latest streamline design allows for easy operation and convenient maintenance. The automatic conveying power system, with non-level frequency conversing speed adjustment and auto synchronous board feeding functions. Using scanning spray nozzle, Japanese nozzles and rodless...

Guangdong Moje intelligent Equipment Co,.LTD.

  • 510000 - Guangzhou City
  • 020 89817005
China 510000 Equipment goods
MJ-SL400 Automatic PCB Loading Machine, Full Automatic Pcb Magazine Loader In SMT Line

Monday, June 10, 2019

Features The operation panel words are simple and clear, the alarm is exact, PCB conveying buffer distance is adjustable. PLC control system ensures the stable operation without interference, and the software can offer the sound safety protection measures for machine with the reasonable...

Guangdong Moje intelligent Equipment Co,.LTD.

  • 510000 - Guangzhou City
  • 020 89817005
China 541299 Equipment goods
Ball Mill

Friday, June 07, 2019

- The Handling Materials and Main Types of Ball Mill: - Ball mill is a key equipment for grinding materials, widely used in powder-making production line such as cement, silicate sand, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and...

Guilin Mining Machinery Co., LTD.

  • 541299 - Guangxi Province
  • 0773 6812095
How Does Vacuum Filtration Work?

Friday, June 07, 2019

Vacuum filtration is an operation of evacuating the air below the filter paper to maintain the pressure differential across the filter medium. It increases the rate of filtration through the force on the solution over gravity. When setting vacuum filtration, the first step is fitting...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
Why do We Recommend Bottle-Top Dispensers?

Friday, June 07, 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...

Hawach Scientific Co.,Ltd.

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

Friday, June 07, 2019

Syringe filters are one of the types of filters. The structure design of the syringe filter is precise and the liquid is filtered smoothly. Internal space design is reasonable, so the residue rate is very low. In addition, the syringe filter has the following characteristics. Characteristics...

Hawach Scientific Co.,Ltd.

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

Thursday, June 06, 2019

The fast liquid chromatography column optimization function, or “GO” function, converts the linear gradient into a step gradient and optimizes the elution conditions near the confirmed elution peak. First, purify a small portion of the sample with a small column and wait until the...

Hawach Scientific Co.,Ltd.

  • 710077 - Xi'an
  • +86 29 89284429
  • +15 1 02 91 81 33
China 523960 Shoes and leather
Winter Insoles For Boots

Sunday, June 02, 2019

Insoles designed for cold weather while wearing winter boots. The feet of the person are far away from the heart, the blood circulation of the feet is poor, the fat accumulation under the skin is less, the heat preservation ability is also weak, and the subcutaneous fat layer of the foot is thin...

Dongguan Zhiguo New Material Technology Co., Ltd.

  • 523960 - dongguan
  • 0769 85031810
China 310000 Equipment goods
Wax Crayon Making Machine

Wednesday, May 15, 2019

- Details or Advantage 1.CANDID have a professional team that could design the most suitable crayon making machine according to customer requirement, including molding machine, packing machine, mold, raw material. We can offer all equipment and material to the customer with high-grade...

HANGZHOU CANDID I/E CO.,LTD.

  • 310000 - Hangzhou
  • +86 0579 87031097
China 310000 Equipment goods
Single Color Rubber Eraser Making Machine

Wednesday, May 15, 2019

- - Details or Advantage - 1. Candid eraser making machine Heating ring use cast aluminum 2. We especially installed the Heating ring heat protection cover 3. Candid eraser making machine is used TWIDEC (Tai wan) temperature control device 4. We use international band inverter...

HANGZHOU CANDID I/E CO.,LTD.

  • 310000 - Hangzhou
  • +86 0579 87031097
China 310000 Equipment goods
C Ring Making Machine

Wednesday, May 15, 2019

- - Main Parameters - 1. Out put: 150pcs/min 2. Wire diameter: Φ1.6-3.0mm 3. Space required: 2m(L)*2m(W) 4. Total power: 2.0KW 5. Suitable material: Galvanized wire 6. Current source: 380V,3P,50HZ 7. Dimension: 2000x1000x1600 mm 8. Weight: 500Kg - - Details or Advantage - 1...

HANGZHOU CANDID I/E CO.,LTD.

  • 310000 - Hangzhou
  • +86 0579 87031097
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