ResourceSeparations
Ultrapure Water for UHPLC
27 Mar 2016This application note compares the accuracy of results when using LC-MS grade, ULC/MS grade, and ultrapure water to determine a variety of analytes.
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UHPLC and HPLCHigh performance liquid chromatography (HPLC) and ultra high performance liquid chromatography (UHPLC), also known as UPLC, are analytical techniques used to separate, identify and quantitate components of complex mixtures including biological samples such as proteins and lipids as well as chemical mixtures of pesticides, drugs and oils. Both techniques are liquid chromatographic methods but differ by operating pressures (HPLC < 6000 psi < UHPLC ). Components of HPLC and UHPLC systems include columns, detectors, pumps, autosamplers and column heaters. Explore a range of UHPLC and HPLC columns for your specific sample needs including reverse phase, normal phase, ion exchange, HILIC, ion exclusion and size exclusion columns. For more specialized HPLC, explore FPLC, countercurrent LC and simulated moving bed systems. Find the best UHPLC and HPLC equipment in our peer reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Preparative ChromatographyPreparative chromatography equipment is used for purification purposes, separating and collecting compounds eluted from a mixture which can then be subsequently used for further purposes. This can be done in large quantities or small. Preparative chromatography systems are usually low to medium pressure liquid chromatographs that are semi-automated. Explore a range of preparative columns and fraction collectors. Find the best preparative chromatography equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity. Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Particle CharacterizationParticle characterization instruments are used to determine particle size distribution, shape, surface area, zeta potential, density and porosity of particles and materials. Multiple tecchniques are available for determining particle size, shape and count including dynamic light scattering (DLS), laser diffraction, electrozone (Coulter technique), imaging particle analysis and single particle optical sensing. Determine the density of your material with a gas pycnometer or examine its surface area and porosity with gas adsorption analyzers and mercury porosimeters. Find the best particle characterization instruments in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Water PurificationThere are a number of water purification methods available to remove contamination from laboratory water. These systems include demineralization, reverse osmosis, filtration and ultrafiltration. A combination of methods is sometimes necessary to achieve purified water suitable for use in experiments.Ultrapure WaterUltrapure water is the highest purity water and contains the lowest levels of organic and inorganic contaminants, particulates and microorganisms.Chromatography Method DevelopmentChromatography method development is the process of designing and optimizing chromatographic techniques to separate and analyze complex mixtures. This includes selecting appropriate stationary and mobile phases, determining flow rates, and optimizing detection methods. Successful method development is essential for high-quality results in fields like pharmaceuticals, food safety, and environmental analysis. Explore chromatography method development tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.HPLC Method DevelopmentIt is important to develop and validate HPLC methods in order to identify, quantify or purify compounds of interest in the most efficient way. Effective method development ensures optimization, quality control and cost effectiveness.Data AnalysisThe analysis of data is the process of transforming, modeling and evaluating data to discover useful information from experimental results. Water AnalysisAnalytical methods used to test the purity of drinking water include determining the level of contaminants abides to the level set by the Environmental Protection Agency (EPA).HPLCHigh-performance liquid chromatography (HPLC) is a technique for separating, identifying, and quantifying components in mixtures. It is widely used in chemical, pharmaceutical, and environmental analysis to ensure purity and identify unknown compounds. Explore the best HPLC systems in our peer-reviewed product directory; compare products, read reviews, and get pricing directly from manufacturers.LC-MSLiquid Chromatography-Mass Spectrometry (LCMS) is a powerful analytical technique that combines the separation power of liquid chromatography with the detection capabilities of mass spectrometry. It is widely used for qualitative and quantitative analysis of complex mixtures in pharmaceuticals, proteomics, and environmental studies. Browse our peer-reviewed product directory to find the best LCMS systems, compare products, check reviews, and get pricing directly from manufacturers.

