1290 HPLC  

The Agilent 1290 Infinity LC system provides the highest levels of speed, resolution, flexibility and sensitivity for any LC and LC/MS application. 

 

Used Agilent 1290 Infinity Series HPLC System

hplcagilent1290.hplchplc.com/page-461081.html

 

agilent hplc,agilent liquid chromatography,Agilent 1290,Agilent 1290 HPLC , Agilent 1290 LC System,Used Agilent 1290, Infinity Series, HPLC System This ...

----------------------

1290 Infinity Series HPLC

hplcpumps.hplchplc.com/list/1290+Infinity+Series+HPLC.html

 

 Used Agilent 1290 Infinity Series HPLC System · Download Hplc Agilent Technologies1290 Infinity II LC System Brochure and Guide. Downloa

ادامه مطلب  

1100 HPLC  

Introduced in 1995, Agilent's 1100 series HPLC system is considered the world's most popular HPLC. They are incredibly robust machines that can last a long time. Finding a used Agilent 1100 on LabX is easy and maintenance for older machines consists of changing seals, filter solvents, lamps, and the odd part in the vacuum degasser. Parts from the Agilent 1050 are often shared with the Agilent 1100 which make it easy to maintain.

-------------

Agilent Technologies 1100 Series

hplcagilent1100.hplchplc.com/

Used Agilent 1100 Series HPLC with Multiple Wavelength Detector System. 1100 hplc,agilent hplc,hplc system,used hplc,used agilent hplc. HPLC System with ...

-------------

Used Agilent 1100 S

ادامه مطلب  

Agilent HPLC 1260  

The Agilent 1260 Infinity HPLC-Chip/MS system is a re-useable microfluidic chip-based technology for high sensitivity nanospray LC/MS. The Agilent 1260 replaced the Agilent 1200 and delivers results faster to save time and money. 

Agilent Technologies 1260 Series

hplcagilent1260.hplchplc.com/

 

agilent hplc,agilent liquid chromatography,Agilent 1290,Agilent 1260 HPLC , Agilent 1260 LCSystem,Used Agilent 1260, Infinity Series, HPLC System,DAD ...

________________________________

agilent 1260 hplc

watershplc.hplchplc.com/list/agilent+1260+hplc.html

 

This Agilent 1260 HPLC included: Binary pump with switch valve 1260 Binary Pump Thermostatted Column Compartment (TCC SL+)

ادامه مطلب  

Agilent HPLC  

Find great deals on HPLCHPLC.COM for Used and Refurbished  Agilent HPLC in Analytical Lab Instruments. Shop with confidence. 





 ________________________________________
agilent 1200 hplc


hplc.hplchplc.com/list/agilent+1200+hplc.html
 
This HP/Agilent 1200 Series Nano HPLC system has just been moved from a working lab. It comes with the followings: G1379B Degasser with Tray G2226A ...
________________________________________



Agilent Technologies 1260 Series


hplcagilent1260.hplchplc.com/
 
agilent hplc,agilent liquid chromatography,Agilent 1290,Agilent 1260 HPLC , Agilent 1260 LCSystem,Used Agilent 1260, Infinity Series, HPLC System,DAD ...
________________________________________



USED AGILENT HP 1200 HPLC Series SYSTEM


hplccolumn.hplchplc.com/page-461164.html
 
used

ادامه مطلب  

Agilent HPLC 1200  

The Agilent 1200 Series HPLC System was introduced in 2010 with a modular design allowing users to define a configuration ideally suited to meet their HPLC and UHPLC applications and requirements. 

agilent 1200 hplc

hplc.hplchplc.com/list/agilent+1200+hplc.html

This HP/Agilent 1200 Series Nano HPLC system has just been moved from a working lab. It comes with the followings: G1379B Degasser with Tray G2226A ...

_____________________________________

USED AGILENT HP 1200 HPLC Series SYSTEM

hplccolumn.hplchplc.com/page-461164.html

used hplc,agilent 1200, 1200 hplc,used agilent 1200 hplc,on sale hplc. We offer an Agilent Technologies 1200 Series HPLC System in excellent working ...

____________________________

ادامه مطلب  

waters hplc  

Whatever your application, Alliance® HPLC, BreezeTM 2 HPLC, and AutoPurificationTM systems offer you proven solutions for all of your HPLC requirements - for today and the future. These systems are synonymous with dependable, routine performance and versatility.

Alliance HPLC Providing versatile, dependable performance for analytical labs, the Alliance HPLC family meets the rigorous requirements of routine chromatography and the performance standards of new-product research and method development.

Breeze 2 HPLC Comes with a pump, detector, injector, and is pre-configured for different levels of HPLC. It includes Breeze Software, an intuitive interface that is easy to set-up, learn, and use.
waters


waters.hplchplc.com/list/waters.html
 
Waters Alliance HPLC THAT WORKS AS HARD AS YOU

ادامه مطلب  

Chromatography terms / analyte / Analytical chromatography / bonded phase / chromatogram /...  

The analyte is the substance to be separated during chromatography. It is also normally what is needed from the mixture.
Analytical chromatography is used to determine the existence and possibly also the concentration of analyte(s) in asample.
A bonded phase is a stationary phase that is covalently bonded to the support particles or to the inside wall of the column tubing.
A chromatogram is the visual output of the chromatograph. In the case of an optimal separation, different peaks or patterns on the chromatogram correspond to different components of the separated mixture.
 Plotted on the x-axis is the retention time and plotted on the y-axis a signal (for example obtained by a spectrophotometer, mass spectrometer or a variety of other detectors) corresponding to the response creat

ادامه مطلب  

column chromatography principle  

When a mixture of mobile phase and sample to be separated are introduced from top of the column, the individual components of mixture move with different rates.Those with lower affinity and adsorption to stationary phase move faster and eluted out first while those with greater adsorption affinity move or travel slower and get eluted out last.
The solute molecules adsorb to the column in a reversible manner. The rate of the movement of the components is given as follows
R= Rate of movement of a component / Rate of movement of mobile phase. i.e. it is the ratio of distance moved by solute to the distance moved by solvent.
source:studyread.com/

ادامه مطلب  

HPLC (high performance liquid chromatograph ) Instrument Operation  

General components of a high performance liquid chromatograph.
HPLC solvent delivery systems.
How automatic injectors work.
Common HPLC detectors.
Downlod powerpoint file about hplc instrumentation .
source:Philadelphia University

ادامه مطلب  

Shimadzu Refractive Index LC Detector 20A (RID-20A)  

Inheriting the stability and extensibility that are the strengths of the Prominence series, the new Shimadzu Refractive Index LC Detector 20A (RID-20A) model of differential refractive index detector is designed with a new reference-cell auto-purge feature and validation support function.

Specifications :

 
Pressure Relief Valve :
The RID-20A incorporates various safety features. Its maximum pressure is five times that of former Shimadzu products and, as a standard feature, it incorporates a sensor that detects leakage from the cell unit. For extra safety, a pressure relief valve that prevents problems related to back-pressure irregularities is also available as an option.

ادامه مطلب  

Troubleshooting HPLC- Loss in Response for Some, but Not All Analytes  

Just as in GC applications, patterns in your HPLC chromatography can exhibit telltale signs that point toward probable sources of error.  In this brief series of posts, we will look at possible scenarios that you may encounter in the laboratory and how you might approach resolving those difficulties.
We occasionally get calls or emails from folks that are seeing lower than expected response for peaks of interest. This may be a matter of method development if you have not done this analysis previously. Suggestions in the post are provided assuming you are working with an established method and have had successful results over an extended period of time (until recently). These suggestions also assume that the response is low for quantitation standards as well as in prepared QC samples. If

ادامه مطلب  

Troubleshooting HPLC- Loss in Response for all Analytes  

Just as in GC applications, patterns in your HPLC chromatography can exhibit telltale signs that point toward probable sources of error.  In this brief series of posts, we will look at possible scenarios that you may encounter in the laboratory and how you might approach resolving those difficulties.
We occasionally get calls or emails from folks that are seeing lower than expected response for peaks of interest. This may be a matter of method development if you have not done this analysis previously. Suggestions in the post are provided assuming you are working with an established method and have had successful results over an extended period of time (until recently). These suggestions also assume that the response is low for quantitation standards as well as in prepared QC samples. If t

ادامه مطلب  

Shimadzu UV-VIS SPD-20A/20AV LC Detectors  

Offering dual-wavelength mode
The SPD-20A/20AV is a UV-VIS detector that takes sensitivity to the limit (Noise level 0.5 x 10(-5) AU), and offers wide linearity (2.5AU). SPD-20A: Wavelength range: 190 to 700nm The SPD-20AV has a mode that allows the deuterium lamp and tungsten lamp to be lit simultaneously, enabling high-sensitivity wavelength-programming detection fro ultraviolet light and the entire visible-light range. Wavelength range 190 to 900nm.

ادامه مطلب  

Shimadzu Photodiode Array SPD-M30A LC Detector  

Supports diverse applications from HPLC to UHPLC
The SPD-M30A detector achieves a 0.4×10-5 AU noise level. The SR-Cell (Sensitivity and Resolution Cell) significantly cuts peak dispersion. This model supports analysis from conventional LC to ultra-fast and UHPLC analysis. The optional high-sensitivity cell has an 85 mm optical path length and is able to detect trace components that were conventionally difficult to detect. The TC-Optics function further improves baseline stability.

ادامه مطلب  

Principle of HPLC:High Performance Liquid Chromatography (HPLC) : Principle, Types, Instrumentation and Applications  

Chromatography is a technique to separate mixtures of substances into their components on the basis of their molecular structure and molecular composition. This involves a stationary phase (a solid, or a liquid supported on a solid) and a mobile phase (a liquid or a gas). The mobile phase flows through the stationary phase and carries the components of the mixture with it. Sample components that display stronger interactions with the stationary phase will move more slowly through the column than components with weaker interactions. This difference in rates cause the separation of variuos components. Chromatographic separations can be carried out using a variety of stationary phases, including immobilized silica on glass plates (thin-layer chromatography), volatile gases (gas chromatography

ادامه مطلب  

Conquer Scientific Company  

Fatih Büyüksönmez , CEO of Conquer Scientific: Conquer Scientific, we are simply dedicated to supporting researchers with high-quality, pre-owned instruments at the lowest possible cost. While we specialize in ion, gas, and liquid chromatographs, mass spectrometers, and microplate readers, we offer a wide range of laboratory instruments in all other fields. At Conquer Scientific, we strive to provide our customers with excellent service and support, whether it is assisting with setup, repairing instruments, or simply providing guidance through a smooth ordering process. It is our goal to become a one-stop resource for the research community for all your laboratory instrument needs.
Conquer Scientific was established in 2007. Since then, it has grown exponentially, owing to our understa

ادامه مطلب  

Troubleshooting HPLC- Tailing Peaks  

As in the previous posts for this series, these suggestions assume that you are working with an established method and had successful results in the past. If a method is rugged, it is developed to minimize tailing by using a stationary column phase that is base-deactivated as well as appropriate modifiers and pH adjustment in the mobile phase as needed.  Keep in mind that if the method is not as rugged as it should be, change(s) in the method might be advised if tailing continues to be an ongoing problem.

With troubleshooting, as always, it is critical to note when the change occurred and how it might correlate to changes in the system.  Equally important is to change one thing at a time to identify the source(s) of difficulty. The following are examples of things that could contribute

ادامه مطلب  

Troubleshooting HPLC- Loss in Response for Some, but Not All Analytes  

Patterns in your HPLC chromatography can exhibit telltale signs that point toward probable sources of error.  In this brief series of posts, we will look at possible scenarios that you may encounter in the laboratory and how you might approach resolving those difficulties.
When some, but not all of your peaks are low, and you are analyzing multiple analytes, the number one rule is to look for trends. As mentioned in the previous post for this series, when you have only one analyte, or a handful of very similar analytes, the following may also apply. Again in this post, the assumption is that you are using an established working method and that you see a loss in response for every sample or standard that is injected. If you are only seeing the problem with samples and not your quantitation

ادامه مطلب  

HPLC Column | Agilent ZORBAX PrepHT Small Molecule Separations LC Column  

ZORBAX optimized phases are now available in preparative dimensions as PrepHT columns. These columns are 21.2 mm and larger in diameter with 5 µm and 7 µm particles to provide high resolving power. They are also available in various lengths to allow optimum resolving power and speed of analyses. In preparative chromatography, it is important to obtain high purity and high recovery along with high throughput. Agilent ZORBAX PrepHT columns have a broad range of selectivities to achieve these objectives.
Features Of Agilent ZORBAX PrepHT Small Molecule Separations LC Column:
Easy scale-up from analytical to preparative scale with ZORBAX phases
Fast preparative separations, up to 2000 mg
5 to 7 μm particles for high efficiency and high yield
Easy to install finger-tight connections seal

ادامه مطلب  

HPLC Column | Agilent Prep Small Molecule Separations LC Column  

[caption id="" align="aligncenter" width="475"] Agilent Prep Small Molecule Separations LC Column[/caption]
Agilent Prep LC Columns are designed for high loadability to purify milligram to gram quantities of products. Column dimensions are available for most preparative sample types ranging from high throughput samples generated in drug discovery to lab scale prep and up to some pilot scale sample preparation. Preparative sized columns are available in 21.2, 30 and 50 mm internal diameters with lengths ranging from 50–250 mm. Columns are available in 5 and 10 µm particle sizes with very high efficiency in every dimension.
Features Of Agilent Prep Small Molecule Separations LC Column:
High loadability for maximum sample purification
Easy scalability from 4.6 mm id to 50 mm id for rapid

ادامه مطلب  

HPLC Column | Agilent Load & Lock Small Molecule Separations LC Column  

Agilent offers a complete range of Load & Lock column systems for laboratory and process preparative LC. They are designed to enable users to easily and quickly pack their own preparative high efficiency columns. This is the right solution for applications ranging in scale from discovery (milligrams) to production (multi-kilos) of pharmaceutical compounds, peptides, and natural products. Our Load & Lock columns have a unique fluid/sample distribution system to maximize productivity. It is the only system that provides dynamic axial compression (DAC) and static "locked" axial compression (SAC) and is designed for easy operation to deliver greater convenience.
Features Of Agilent Load & Lock Small Molecule Separations LC Column:
Mobile packing station supports three different co

ادامه مطلب  

HPLC Chemiluminescent Nitrogen Detector (CLND)  

Similar to FL, but instead of using a light source to excite the analyte atoms, the excitation is initiated by chemical reaction. Since it is not relied on the external excitation source, the noise is small, results in high signal to noise ratio, i.e. it provides even higher sensitivity than FL.
The Chemiluminescent Nitrogen Detector (CLND) for use with high-performance liquid chromatography (HPLC) allows for the low-level detection of nitrogen-containing compounds with simple quantitation. The nitrogen selective detector’s equimolar response (i.e., equal response for nitrogen independent of its chemical environment) allows for any nitrogen-containing compound to be quantitated as long as the number of nitrogens are known. The HPLC–CLND provides a new detection method for analy

ادامه مطلب  

Agilent 1260 Infinity II Multiple Wavelength LC Detector  

Reliable, simultaneous quantification of primary compounds, by products and impurities
The diode array design of the Agilent 1260 Infinity II Multiple Wavelength Detector offers very low detector noise (less than ± 7 μAU) for precise quantification of trace levels, regardless of the number of signals recorded. Over a wavelength range from 190 to 950 nm, simultaneous detection of up to eight compound-specific wavelengths for optimum selectivity is provided. High-speed UV detection with up to 120 Hz data rates keeps pace with the analysis speed of fast LC.
Features:
Increased sensitivity and selectivity - with simultaneous acquisition of up to eight compound-specific wavelengths.
Low detection limits - low noise front-end electronics and special flow cell design deliver lowest detection

ادامه مطلب  

Agilent 1290 Infinity II Refractive Index LC Detector  

The 1290 Infinity II Refractive Index Detector is equipped with an ultralow dispersion microflow cell, which significantly reduces run times for higher sample throughput and improved resolution. Lower solvent consumption means much lower cost of analysis. A high-performance detector of choice for accurate, reproducible, routine analysis of polymers and other compounds that aren’t detectable by UV.
Features Of Agilent 1290 Infinity II Refractive Index LC Detector:
Shorter run times – for considerably higher sample throughput.
Ultralow dispersion – for improved sample definition and resolution.
Reduced solvent consumption – for significant savings in analysis cost.
Ideal tool for polymer analysis – consistent molecular weights, micro or analytical scale.
Excellent sensitiv

ادامه مطلب  

HPLC Column | Agilent ZORBAX Eclipse Amino Acid Analysis (AAA) LC Column  

The ZORBAX Eclipse AAA high efficiency HPLC column rapidly separates amino acids following an updated and improved protocol for use with the Agilent 1100 HPLC. Total analysis from injection to injection can be achieved in as little as 14 min (10 min analysis time) on the short, 7.5 cm column and 24 min (16 min analysis time) on the 15 cm column length. Exceptional sensitivity (5 - 50 pmol with DAD,FLD) and reliability are achieved using both OPA and FMOC derivitization chemistries in one fully automated procedure using the Agilent 1100 HPLC instrument. Eclipse AAA columns are used for high resolution rapid analysis of 24 amino acids. The Eclipse AAA is use tested for amino acid analysis (AAA). The Eclipse AAA uses well known OPA and FMOC derivatization techniques.
Features Of  Agilent ZOR

ادامه مطلب  

Agilent 1260 Infinity II Variable Wavelength LC Detector  

Sensitive, fast and even more analyte information with dual wavelength capabilities
The Agilent 1260 Infinity II Variable Wavelength Detector offers lowest baseline noise and drift, resulting in lowest detection limits for robust quantification of trace level components. Even more sample information can be acquired in dual-wavelength mode. Time-programmable wavelength switching provides optimum sensitivity and selectivity for your applications.Highest productivity can be achieved with fast analysis at up to 120 Hz data rates.
Features Of Agilent 1260 Infinity II Variable Wavelength Detector:
Robust quantification of trace level components -lowest baseline noise and drift results in lowest detection limits.
More analyte information per run- withdual-wavelength capabilities.
High-resoluti

ادامه مطلب  

Reversed Phase Chromatography (RPC)  

Reversed phase HPLC (RP-HPLC) has a non-polar stationary phase and an aqueous, moderately polar mobile phase. One common stationary phase is a silica which has been surface-modified with RMe2SiCl, where R is a straight chain alkyl group such as C18H37 or C8H17. With such stationary phases, retention time is longer for molecules which are less polar, while polar molecules elute more readily (early in the analysis). An investigator can increase retention times by adding more water to the mobile phase; thereby making the affinity of the hydrophobic analyte for the hydrophobic stationary phase stronger relative to the now more hydrophilic mobile phase. Similarly, an investigator can decrease retention time by adding more organic solvent to the eluent. RP-HPLC is so commonly used that it is oft

ادامه مطلب  

Shimadzu Photodiode Array SPD-M20A LC Detector  

General-purpose model
The SPD-M20A is a general-purpose model incorporating a deuterium lamp. The light-source compensation function achieves a noise level of 0.6×10-5AU. Cell temperature control ensures baseline stability.
Key Benefits:
Noise level of 0.6×10-5 AU
Superior Linearity - 2.0AU
Ethernet interface & web control functions
Can be incorporated into non-Shimadzu HPLC systems
Light source: Deuterium (D2) lamp, tungsten (W) lamp
Wavelength range: 190 to 800 nm
Wavelength accuracy: 1 nm max.
Wavelength precision: 0.1 nm max
Cell temperature control range: 5°C above room temperatre to 50°C
Operating temperature 4°C to 35°C
Power requirements: 100 VAC, 150 VA, 50/60 Hz
The SPD-M20A PDA is the third member of the UV-Vis absorbance detectors. The M20A, like

ادامه مطلب  

Shimadzu CDD-10AVP Conductivity LC Detector  

Handles a Wide Variety of Analysis Options
The CDD-10AVP conductivity detector achieves an even higher level of sensitivity and makes it possible to perform a wide variety of analysis scenarios with a single unit. An option card enables the simultaneous 2-channel measurement of anions and cations, and a suppressor option allows expansion to a suppressor system for ultra-high sensitivity work. Organic acids can be analyzed using Shimadzu's unique post-column pH-buffered electroconductivity method.
Low noise, low drift and wide dynamic range assure proven performance of the Shimadzu VP series HPLC. Data acquired by the CDD-10AVP is transferred to the SCL system controller via an optical fiber interface and are digitally processed by workstation. By adding the optional cell (dual kit NS

ادامه مطلب  

Shimadzu RF-20A/RF-20Axs Fluorescence LC Detector  

The RF-20A/20AXS fluorescence detectors offer world-leading sensitivity and ease-of-maintenance. The RF-20AXS is a high-sensitivity model that incorporates a temperature-controlled cell with a cooling function as standard.

RF-20A / Standard model:
The RF-20A, which offers best-in-class sensitivity, features a water Raman S/N ratio of at least 1200, as well as excellent ease-of-use with such features as maintenance from the front panel and adoption of a long-life lamp.

RF-20AXS / Achieves World-Leading Sensitivity :
Offering world-class levels of sensitivity and easy maintenance, the RF-20AXS features a water Raman S/N ratio of at least 2000 and a temperature-controlled cell with a cooling function. This maintains a constant detector cell temperature, even if the room temperature

ادامه مطلب  

Hplc Agilent Technologies 1290 Infinity II LC System  

Welcome to the infinitely better liquid chromatography system. Innovative new technology delivers more resolution per time,more sensitivity and more flexibilityThe debate is over. The advantages of smaller particles—speed, resolution and sensitivity—were developed 40 years ago. The technology took a giant step forward in 2003 when Agilent introduced the first totally porous sub-2 μm particle columns, the ZORBAX Rapid Resolution High Throughput (RRHT) columns. The availability of other advanced particle columns provided additional ways to achieve further gains in separation power per time by using higher flow rates.
Today, about a dozen vendors offer dedicated UHPLC systems. All of them operate at different pressures, flow rates, system volumes, temperatures and detector sensit

ادامه مطلب  

Shimadzu Evaporative Light Scattering LC Detector LTII (ELSD-LTII)  

In the history of high-performance liquid chromatographs, which dates to the early 1960s, refractive index detectors (RI detectors) have often been used as general-purpose detectors. RI detectors enable the detection of components that do not possess UV absorbance and give a proportional relationship between the heights of detected peaks and the quantities of detected components. So, in comparison with absorbance detectors (UV detectors), they offer advantages such as the ability to ascertain unknown component quantities and obtain molecular weight distributions for macromolecules. On the other hand, they also have various disadvantages. For example, they cannot be used for gradient analysis, the baselines they produce are susceptible to the influence of fluctuations in the ambie

ادامه مطلب  
صفحات ادامه نتايج:  1