SAMPLES - 8655 Anuncios
Lunes 12 agosto 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
Lunes 12 agosto 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
Domingo 11 agosto 2019
Product name : Metal Dice Material : solid metal material(zinc alloy,brass,aluminium alloy etc.) , LOGO : we can make you customize logo on the dice,printed or engraved with colour Size 8-35mm,or you can make any of your customize size,just personal preference TYPE: D4...
SueGao Craft Industrial Co., Limited
- 541000 - Guilin
- +8607737598312
Sábado 10 agosto 2019
Cantidad : Proofing b - Precio : 200-1500CNY
Half hole pcb: The walls of the PTH holes on the PCB are plated with Half-hole formed by smooth and complete metal forming.The Half hole process on the edge of the board is already a mature process in PCBSKY PCB manufacturing processing. How to control the quality of the product after...
Shenzhen Huhe Circuits Co.,Ltd.
- 518103 - Fuyong Street
- +15 9 76 88 36 32
Sábado 10 agosto 2019
Cantidad : 1000000 / - Precio : 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
Sábado 10 agosto 2019
Cantidad : 1000000 / - Precio : 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
Viernes 09 agosto 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
Jueves 08 agosto 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
Jueves 08 agosto 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
Jueves 08 agosto 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
Jueves 08 agosto 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
Jueves 08 agosto 2019
Most common SPE cartridges are injection syringes made of polyethylene, in which there are two plugs made of polypropylene or fiberglass, with a certain amount of chromatographic adsorbent (filler) between the two plugs. SPE cartridges without sieve plate 1. Avoid “non-specific adsorption” 2...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Miércoles 07 agosto 2019
Food safety testing is a major issue related to people's livelihood. In recent years, the QuEChERS method has been widely used in the pretreatment of food safety detection samples. In addition, the method has been applied to trace analysis. QuEChERS Application The international application...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Miércoles 07 agosto 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
Martes 06 agosto 2019
Membrane syringe filters are used to clarify small-volume sample solutions generally. The housing is well-designed to spread the sample solution over the entire surface of the membrane so that maximum membrane capacity is used. And the construction without any glue or binders helps...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Martes 06 agosto 2019
Sample Vials are an essential tool in the lab. These general purposes of glass vials are to provide exceptional resistance to heat shock and chemical leaching. Our sample vials are always used in the field of a biological agent, cosmetics, high-value chemistry. And we have high-quality...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Martes 06 agosto 2019
In recent years, the application of HPLC in inorganic analysis has developed rapidly, and the use of flash columns has been more and more widely because of a method that can rapidly determine heavy metal elements in environmental water samples. Matters needing the attention of flash columns 1...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Martes 06 agosto 2019
HPLC is more suitable for the separation and analysis of substances with the high boiling point, poor thermal stability, physiological activity, and relatively large molecular weight. Hawach HPLC columns are widely used in the analysis of nucleic acid, peptide, lactones, polycyclic...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Martes 06 agosto 2019
Ion-exchange solid phase extraction is widely used in biological samples and environmental monitoring. During the extraction process, the pH of the sample is adjusted so that the solute is easily ionized. The solute is exchanged from the resin by changing the pH or increasing the...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lunes 05 agosto 2019
Cantidad : 900 tons - Precio : 2300 usd/ton
304 stainless steel sheet specification: Item Name: Cold rolled/ Hot rolled stainless steel sheet Standard: ASTM,AISI,DIN,EN,GB,JIS Grade: 201, 304, 310S,316,316L,430,409 Thickness: 0.273mm-40.0mm,or customized Width: 1000mm,1219mm,1500mm,or customized Edge: Slit edge/Mill...
Glory diamond industry limited
- 450000 - zhegnzhou
- +8613526452280
Lunes 05 agosto 2019
Vacuum Filtration is a device for accelerating water filtration by negative pressure caused by air extraction. It's a filtering product that most lab customers will be used for suspension detection in water extraction filtration, microbial limit detection extraction filtration, chromatographic...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Lunes 05 agosto 2019
QuEChERS method has unique advantages in pesticide residue analysis. Due to the irrational use of pesticides and inadequate supervision of pesticide use, people may suffer from acute or chronic pesticide poisoning after eating pesticide-contaminated food, and even threaten human health...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Viernes 02 agosto 2019
Syringe filter is a kind of disposal filter cartridge, which is attached at the end of injector for using. It is optional to use syringe needles, if it is possible, it could be installed in the end. It is generally made of plastic shells and thin films which acts as filters. Due to...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Viernes 02 agosto 2019
The vial is a relatively small glass tube or vial, usually with a vial cap. Bottle bottoms are generally flat, rather than having a spherical bottom like a test tube. When choosing a vial, customers should mainly choose from several aspects, such as material, color, volume, diameter...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Viernes 02 agosto 2019
Flash column pressure has something to do with the form of silica gel, the mesh number, the synthesis condition of filler, the condition of column packing, the mobile phase, and the temperature when analyzing. Different manufacturers' new flash columns, their column pressures may...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Viernes 02 agosto 2019
Usually, the sample contains something that is not of interest to the analyst. Salt, lipids, lipid-containing substances, humic acid, hydrophobic proteins, and other biological substances are some substances that may interact with the HPLC column in use. These substances have less...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Jueves 01 agosto 2019
QuEChERs is a sample treatment and purification technology for the detection of multiple pesticide residues in high-water-content food. Because it simplifies the previously complex extraction procedures and expands the scope of the extracted pesticide residues, QuEChERs becomes an...
Hawach Scientific Co.,Ltd.
- 710077 - Xi'an
- +86 29 89284429
- +15 1 02 91 81 33
Miércoles 31 julio 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
Miércoles 31 julio 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
Miércoles 31 julio 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