AFFECTS - 2007 Annonces

Mardi 24 septembre 2019

Hawach scientific provide high-quality MCE Grid membrane filter and the products have been exporting to more than 120 countries and area. MCE Grid membrane filter is a kind of mixed cellulose wafer film with mesh, which is mainly used to count the bacterial colony after culture, and...

Lundi 23 septembre 2019

The reason for the QuEChERS matrix effect in the liquid state is generally considered to be due to the non-volatile components in the matrix and the substance to be tested, which competes in the ionization process. The matrix effect in gas phase temperament is generally attributed...

Lundi 23 septembre 2019

Let's take a look at two common adsorbents for adsorption chromatography. Polyamide The polyamide adsorbent can be divided into nylon 6 (polycaprolactam) and nylon 66 (polyhexamethylene adipamide), which are hydrogen bond adsorption and semi-chemical adsorption. There are many amide...

Vendredi 20 septembre 2019

Silica matrix HPLC columns are generally compatible, but organic polymer matrix columns may expand or contract in some solvent combinations, which will affect their chromatographic behavior. Wash each solvent system at least 20 volumes. Because some solvent systems are highly viscous...

Jeudi 19 septembre 2019

Quantité : 1 - Prix : Product: 1-100 yuan

BMC/SMC Moulding Description: We mainly use SMC injection molding and pressure molding as the methods. When designing the flow channel and parting surface, we think that the cavity pressure should be as small as possible, especially some small ribs, as well as the smooth exhaust,...

Mercredi 18 septembre 2019

Performance comparison of Pu sandwich board ,rock wool and glass wool composite board Due to the improvement of fire protection requirements for buildings, the market situation of rock wool composite board and glass wool composite board with better flame retardant grade is better in recent years...

Mercredi 18 septembre 2019

It is well known that a large number of high-tech industries are inseparable from dust-free purification workshops, such as CCL circuit substrate copper clad laminates, PCB printed circuit boards, photoelectric LCD panels and LEDs, power and 3C lithium batteries, and some pharmaceutical...

Mardi 17 septembre 2019

Quantité : 1pc - Prix : US $1 - 3,000 / Set

Basic information This underground gate valve is used as a two-way closed circuit device. Features 1. No need for sluice Wells, which reduces the amount of installation work; 2. Does not affect the traffic, and underground parts of the integration, effectively prevent theft; 3. Stem...

Lundi 16 septembre 2019

Reversed phase chromatography (RP) is the most widely used technique in high-performance liquid chromatography (HPLC) up to now, mainly because it is suitable for the analysis of most of them. Nonpolar substances and many ionizable and ionic compounds. Most stationary phases used...

Mardi 03 septembre 2019

Chemical properties of the chromatographic column could affect the performance of the C18 HPLC column. Performance factors of C18 HPLC columns: bonding type Single tooth bonding can improve the mass transfer rate and accelerate column balance. Double tooth bonding can increase the...

Lundi 02 septembre 2019

This 8 colors logistics label flexo printing machine is suitable for printing paper, paperboard, high-grade self-adhesive label and so on. It is a auxiliary equipment of multi-color printing machine. At first glazing, it can increase the brightness of the product and the storage time...

Vendredi 30 août 2019

Reduced.bore Threaded.ends: ANSI.B2.1.BS. 21,DIN259/2999.JIS.130202/130203 Internal.entry.blow-out.proof.stem Material: .CF8M.CF8.CF3M.WCB Pressure.rating: .2000PSI.WOG Pressure.test: .API.598 Lever.handle.with.locking.device Penglai Huande Steel Valve CO.,LTD can provide you with...

Jeudi 29 août 2019

Quantité : 1 - Prix : 0-50000

We are one of the professional air quality monitoring equipment suppliers, please always feel free to contact. The atmosphere is the basic condition for our survival. Air pollution has become a serious problem that affects human health and threatens human survival because of the persistent...

Samedi 24 août 2019

Quantité : 500KK/Mont - Prix : USD 3.1 Above

Everyone knows that driving power is the core of LED lighting. LED lighting lamps are known as energy-saving, intelligent and long service life. But these basically rely on good driving power. There has been a joke in the industry: If 100 LED lamps broke, 99 ascribe to the driving power supply...

Samedi 17 août 2019

Quantité : 500kg

We can offer different Voltage of Line Post Insulator for Transmission Line. Such as Long Rod Insulator, Rod Insulator and Pin Type Insulator. Contact us get more details about Line Post Insulator, such as TDS, Application Method, OEM etc. We can supply different type of Line Post Insulator...

Samedi 17 août 2019

Quantité : 500kg

The silicone rubber insulation coating is made from special silicone rubber, high-performance material and other polymers by polymer blending technology. Its basic structural unit is silicon - oxygen chain while its side chain is connected by silicone with another organic radical group...

Jeudi 15 août 2019

We need to check if the temperature of the pipette </ a>is different from the temperature difference between the pipette and the tip, which affects the accuracy of the pipette. In general, when the temperature of the removed liquid does not match the temperature of the tip and the pipette...

Jeudi 15 août 2019

In the detection of air pollution, taking samples with glass fiber extraction thimble is a common method. And here we will focus on one reason having an influence on weighing the extraction thimbles, which is the air humidity. As we all know, the environment when analyzing is limited...

Mercredi 14 août 2019

Physical properties of the chromatographic column could affect the performance of C18 HPLC columns. - Performance factors of C18 HPLC columns: - Silica gel purity Class A silica gel has high residual silica hydroxyl with a negative charge and high metal content on the acidic surface...

Samedi 10 août 2019

Quantité : Proofing b - Prix : 200-1500CNY

Custom high frequency pcb from professional high frequency pcb company china shenzhen with factory price in low cost. The high frequency of electronic equipment is a development trend, especially in the development of wireless networks and satellite communications, the high-speed...

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...

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...

Lundi 05 août 2019

One of the main factors affecting the life of the liquid chromatographic column is the mobile phase. There are three aspects of the mobile phase factors. The pH value of the Mobile Phase The fillers of different substrates apply to different pH value range. Under normal temperature...

Samedi 03 août 2019

An air filter housing is a kind of air filtration device, as one of pneumatic three pieces, which are generally used to prevent dust for workshops, plants, operating rooms, laboratories or electronic mechanical communication equipment. - Filtration precision - The key to affect the...

Jeudi 01 août 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...

Lundi 15 juillet 2019

Quantité : 1 - Prix : $36.78

What Are Some Tips For The Maintenance Of Human Hair Extensions? Have you taken remy hair extensions? Do you know how to take care of hair extensions? Here are some tips about how to maintain the hair extensions. It can be used for more than 3 months if you can take good care of it...

Lundi 15 juillet 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...

Lundi 15 juillet 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...

Samedi 13 juillet 2019

Temperature control range：-85 ° C ~ 125 ° C Power range：3.5kW~10kW Temperature control accuracy：±0.2°C Semiconductor Temperature Control Applications: 1. Widely used in high and low temperature testing of semiconductor equipment. Electronic equipment high temperature and low temperature...

Jeudi 04 juillet 2019

(1) When loading and unloading or replacing the HPLC columns, the action should be light and the joint should be tightened properly. Strong mechanical vibration must be prevented to avoid voids in the bed. (2) If the instrument is used for routine analysis, the sample type is limited...