High-performance liquid chromatography (HPLC) systems are used to analyze and/or purify liquid mixtures. Analytical HPLC systems are used in the food safety, pharmaceutical, and manufacturing industries, as well as in medical and research laboratories. Two of the most common types of analytical HPLC systems are normal phase HPLC and reversed phase HPLC. Normal phase uses a polar stationary phase and a non-polar mobile phase to separate components of a mixture, while reversed phase HPLC uses phases with the opposite polarities of normal phase HPLC. The sample liquid is mixed with the mobile phase and run through a column that contains the stationary phase. The way the sample moves through the column is the basis for the analysis.
Considerations for purchasing an Analytical HPLC System
To determine which analytic HPLC system is the best fit for your lab, decide which features will be needed. Multi-solvent or multi-column analysis, stationary phase pore size, possible pump pressures, possible flow rates, and number of wavelength detectors are all factors that can vary.
Find, compare, and request a quote for analytical HPLC systems across leading suppliers at Labcompare; including access to product citations, related published figures, and first-hand reviews from our scientific community.
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| Company | Polymer Char | Polymer Char | Polymer Char |
| Item | Crystallization Elution Fractionation (CEF) | CRYSTEX® QC Instrument for Soluble Fraction | Thermal Gradient Interaction Chromatography (TGIC) |
| Citations | | | |
| Catalog Number | CEF | CRYSTEX QC | TGIC |
| Price | | | |
| Detector(s) | Infrared Detection, Viscometer | Infrared Detector IR4 | Infrared Detection, Viscometer |
| Description | Crystallization Elution Fractionation (CEF) is a new approach for measuring Chemical Composition Distribution (CCD) in polyolefins that combines the separation mechanisms of CRYSTAF and TREF. The instrument includes the capability of performing TREF and TGIC* techniques.
The instrument can analyze Crystallization Elution Fractionation (CEF) is a new approach for measuring Chemical Composition Distribution (CCD) in polyolefins that combines the separation mechanisms of CRYSTAF and TREF. The instrument includes the capability of performing TREF and TGIC* techniques.
The instrument can analyze up to 42 or 66 samples a day with disposable glass vials of 10 or 20 mL. The virtual instrumentation software controls the full process; therefore, no manpower is required.
The concentration of the sample is measured by an Infrared detector, which also provides information about its comonomer content. More information on molar mass composition interdependence can also be obtained by adding a Viscometer detector. Optionally, the TREF column can be replaced by a TGIC* column in order to separate by adsorption and reach the composition range of elastomer resins.
Features - Useful technique for the identification of components in Post Consumer Recyclates (PCR), PP-PE blends, and other recycled polymers
- Fully automated CEF, TREF and TGIC* techniques (CCD measurement).
- No manpower required.
- No handling of solvents.
- Low solvent consumption.
- Automated rinsing at the end of the analysis.
- Subambient operation (down to -20ºC) for low crystallinity samples.
- 42 or 66 samples can be analyzed sequentially and automatically with analysis time as short as 30 minutes per sample for high throughput analysis or as long as desired for high resolution analysis.
- Infrared Detection for outstanding sensitivity in concentration and composition, and carbonyls capability.
- Possibility of adding a Viscometer detector.
- Excellent reproducibility.
- Possibility of performing TGIC* by hanging the column.
... Read More | CRYSTEX® QC measures the Soluble Fraction % (amorphous fraction) in polypropylene and other polyolefin resins.
This instrument is an automated alternative to the traditional wet chemistry method based on xylene solubility, known for being time consuming and requiring constant manual handling ofCRYSTEX® QC measures the Soluble Fraction % (amorphous fraction) in polypropylene and other polyolefin resins.
This instrument is an automated alternative to the traditional wet chemistry method based on xylene solubility, known for being time consuming and requiring constant manual handling of solvent at high temperature. CRYSTEX® QC is easy to operate and obtains the amorphous phase content in a short time. It eliminates the need to handle solvent manually and uses less flammable solvents than Xylene (TCB or oDCB), increasing the safety level in the laboratory.
The instrument automates the entire analysis process, including dissolution, separation of the soluble fraction from the crystalline matrix, and analysis by the online detectors.
All results (concentration, ethylene content and intrinsic viscosity) are obtained for the whole sample, the amorphous fraction, and the crystalline fraction.
Up to 4g of polymer can be analyzed, one sample at a time with CRYSTEX QC.
Features - Included in the ISO 16152:2022 as an automated method for the determination of xylene-soluble matter in polypropylene, alternative to the manual gravimetric method. ISO 16152 is equivalent to the ASTM D5492 and to ISO 6427, Annex B.
- Fully-automated analysis of the soluble (amorphous) fraction in polypropylene and other polyolefins.
- A sample can be analyzed every 2.5 hours (including dissolution and rinsing time) without manual operation.
- No need for accurate weighing of sample nor manual solvent handling.
- No external filtration nor solvent evaporation required.
- Additional measurement of ethylene content and intrinsic viscosity for the fraction, the crystalline fraction, and whole sample.
- For Process /QC laboratories in production plants.
- Compatible with other polyolefin materials such as LDPE, and adaptable to other solubility tests (heptane or hexane solubles).
... Read More | The TGIC Instrument is a fully automated Thermal Gradient Interaction Chromatograph Instrument for measuring Composition Distribution in Elastomers and Low Crystallinity Polyolefin Copolymers. This technique uses carbon-based adsorbents to characterize the composition distribution in polyethylene The TGIC Instrument is a fully automated Thermal Gradient Interaction Chromatograph Instrument for measuring Composition Distribution in Elastomers and Low Crystallinity Polyolefin Copolymers. This technique uses carbon-based adsorbents to characterize the composition distribution in polyethylene copolymers.
Features - Fully automated operation with no manual solvent handling. Integrated vial filling with solvent, sample dissolution and in-line filtration.
- Useful technique for the identification of components in Post Consumer Recyclates (PCR), PP-PE blends, and other recycled polymers
- Fast analysis time of around 2-3 hours including sample dissolution.
- Analysis of up to 42 or 66 samples sequentially, with the possibility of using different methods each one.
- Both TGIC and Crystallization Elution Fractionation analyses can be performed in the same instrument with dedicated software packages.
- Easy incorporation of Polymer Char’s on-line Viscometer for composition molar mass interdependence.
... Read More |
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