Mardi 13 août 2019
Pipettes are widely used in the laboratory. Proper operation and use of pipettes can improve work efficiency. What are the six common operational misunderstandings of pipettes? Pipettes are widely used in laboratories. The correct operation and the use of pipettes can improve work efficiency...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Mardi 13 août 2019
Laboratory vacuum filtration equipment is specially designed for laboratory workers to maintain solid-liquid separation of liquid samples. Operation Procedures of Diaphragm Vacuum Pump 1. Put the glass filter flask on the stainless steel workbench, and insert the silica gel plug of...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Mardi 13 août 2019
In the labs, experimenters always take samples with fiberglass extraction thimbles. And weighing the extraction thimbles is quite important for the results of the experiments. Does the cooling time have obvious influences when weighing the extraction thimbles that are taken out of the ovens...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Mardi 13 août 2019
Adjustable bottle-top dispensers are divided into two types: internally-mounted type and externally-mounted type. They use reciprocating motion of syringe and two single acting pistons to make liquid quantity, directional movement and liquid adding. Internally-Mounted Type Bottle-Top...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Mardi 13 août 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
Mardi 13 août 2019
Syringe filter is suitable for filtering a small number of samples in the laboratory because of its low adsorbability. The low adsorbability ensures a large amount of recovery of small or high-value samples. The shell of the filter will not pollute the samples. It has stable quality...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
Syringe filter is a kind of filter connected to the front of the syringe. When the experimenters deal with the chromatographic samples with syringe filter, they should pay attention to avoiding bringing impurities in the process of filtration. One reason for the appearance of such...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
With the continuous development of the sample vials, more and more types and functions of the sample vials appear in laboratory analysis. The capacity of sample vials is bigger and bigger. The sampling speed of the sample vials is faster and faster. The sampling accuracy is higher and higher...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
The rapid chromatographic method is a technology widely used in the separation and purification of active target compounds, such as organic compounds, natural products, and biological macromolecules. Rapid chromatographic method has the advantages of easy-operation, low-price, and fast-analysis...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
The filter capsules are ready-to-use units for the filtration of media containing particles. They are also used for removing biologicals in pharmaceutical and biotechnology applications. Other applications are like easy sample preparation, separation of cell debris, filtration of...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
The system of an HPLC column is composed of a liquid, a reservoir, a pump, a sampler, a column, a detector and a recorder. - The packing material of HPLC columns - The packing material has high carbon content, small surface polarity, very low chemical purity and high surface separation...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lundi 12 août 2019
Solid phase extraction principle Solid phase extraction is a separation technique that combines selective retention, selective elution, and the like. When a complex sample solution passes through the sorbent, the sorbent selectively retains the aimed compound and a small number of...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Samedi 10 août 2019
Quantité : 1000000 / - Prix : RMB0.055-0.07/pc
Model: SYPD-B gray and white paper straws Colour: Grey with white polka dot Size: Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch) Weight: 1.2g per pcs (±0.02) Packing: Normal in single colour: 500pcs/ OPP bag, 5000pcs/Carton Mix maximum 20 colors per case. We can customized...
NINGBO JIANGBEI SHENYU INDUSTRY & TRADE CO.,LTD
- 315030 - Ningbo
- +86 574 87653647
Samedi 10 août 2019
Quantité : 1000000 / - Prix : RMB0.055-0.07/pc
Patterned drinking straws Type: Event & Party Supplies Feature: Disposabel, Eco-Friendly Printing: Health water ink, Size: (Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch) We can custom size as per customer's request Weight: 1.2g per pcs ( ±0.02) Colour: Metallic...)
NINGBO JIANGBEI SHENYU INDUSTRY & TRADE CO.,LTD
- 315030 - Ningbo
- +86 574 87653647
Samedi 10 août 2019
Quantité : 1000000 / - Prix : RMB0.055-0.07/pc
Model: SYPD-B gold polka dot straws Colour: Black with gold polka dot Size: Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch) Weight: 1.2g per pcs (±0.02) Packing: Normal in single colour: 500pcs/ OPP bag, 5000pcs/Carton Mix maximum 20 colors per case. We can customized...
NINGBO JIANGBEI SHENYU INDUSTRY & TRADE CO.,LTD
- 315030 - Ningbo
- +86 574 87653647
Samedi 10 août 2019
Quantité : 1000000 / - Prix : RMB0.055-0.07/pc
Type: Event & Party Supplies Feature: Disposabel, Biodegradable, Eco-Friendly water-proof Material: 100% Food Grade Biodegradable Paper Printing: Eco-friendly water ink, flexo print Size: (Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch) We can custom size as per customer's...)
NINGBO JIANGBEI SHENYU INDUSTRY & TRADE CO.,LTD
- 315030 - Ningbo
- +86 574 87653647
Samedi 10 août 2019
Quantité : 1000000 / - Prix : RMB0.055-0.07/pc
Model: SYST-B Colour: Brown and black stripe Size: Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch) Weight: 1.2g per pcs (±0.02) Packing: Normal in single colour: 500pcs/ OPP bag, 5000pcs/Carton Mix maximum 20 colors per case. We can customized packing as below: Paper bag/...
NINGBO JIANGBEI SHENYU INDUSTRY & TRADE CO.,LTD
- 315030 - Ningbo
- +86 574 87653647
Vendredi 09 août 2019
First, we need to determine if there is a leak in the pipette. 1. Detection method: 1) Visual inspection: first pipette the liquid using the pipette to be tested, then let it stand vertically for 15 seconds to see if there is a slow flow of droplets. If there is a droplet flowing out slowly...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Vendredi 09 août 2019
Vacuum pump use precautions The function of the vacuum pump is to remove gas molecules from the vacuum chamber and reduce the gas pressure in the vacuum chamber to achieve the required vacuum. In general, there is a large range from atmospheric to very high vacuum, and so far no vacuum...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Vendredi 09 août 2019
- Some Tips In QuEChERS D-SPE? - Why choose anhydrous magnesium sulfate as a water remover? In the d-SPE purification process, the moisture content plays a crucial role in the purification effect of PSA. The lower the moisture content, the better the purification effect of PSA. Experiments...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Vendredi 09 août 2019
As a matter of fact, the quartz fiber extraction cannot be accessible in China, so Hawach has to design the other two products—cellulose and glass fiber exaction thimbles whose relevant parameters are respectively introduced as follows. Cellulose Exaction Thimble It is composed of...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Vendredi 09 août 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
Vendredi 09 août 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
Vendredi 09 août 2019
Reversed-phase chromatography (RPC) contains any chromatographic method using a non-polar stationary phase. The word “reverse” has a historical background. In the 1970s, most liquid chromatography was performed on unmodified silica or alumina. Their surface chemistry is hydrophilic...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
More than 90% of gas chromatographic problems occur in the inlet, and it is necessary to see which problems may occur in the inlet. Problem No.1: Leak If there is a leak, the pressure on the inlet may not be maintained, and the instrument will alarm. If the problem cannot be solved in time...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
As a single-use filter cartridge, Syringe filters are utilized to remove particles from the sample prior to high-performance liquid chromatography (HPLC). The scientists like to attach them to the end of the syringes for general filtration, as syringe filters are affordable and convenient...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
Considering the comparative simplicity and maturity of the glass vial, customers rarely complain about its quality. However, the applicability of the autosamplers is actually essential to big manufacturing companies. Severely in terms of International Standard, vials of Hawach are...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
Flash columns adopt high-capacity silica gel for precise filling, which has very excellent separation and purification performance. The specific surface area of high-capacity spherical silica gel is 40% higher than that of ordinary spherical silica gel, and the sample loading is twice...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
The membrane filter is widely used in today's life, including ultrafiltration membrane, microporous membrane, nanofiltration membrane, microfiltration membrane, mesopore fiber ultrafiltration membrane, etc. Role of the membrane filter 1. Treatment of solute separation and concentration...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jeudi 08 août 2019
Chromatography is a separation and analysis method and the separation is the core. Therefore, HPLC columns are the heart of the chromatographic system. The requirements for the column are high efficiency, good selectivity and fast analysis speed. Generally, the column length of about...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
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