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Publications

T&T GPC/SEC: Strategies to Save Solvent
Tetrahydrofuran (THF) - a widely used solvent in gel permeation chromatography/size-exclusion chromatography (GPC/SEC) - is set to be classifi ed as carcinogenic as proposed by the Committee for Risk…
Language
Publication Number
20431
Publication Type
Tip&Trick
Source
The Column
Year
2015
Publication date
07.08.2015
Issue
8
Author
J. Preis, D. Held
T&T GPC/SEC: System Peaks or Ghost Peaks in GPC/SEC
Extraneous peaks, unrelated to the solute to be characterized, are quite common in gel permeation chromatography/size-exclusion chromatography (GPC/SEC), especially when refractive index (RI)…
Language
Publication Number
20466
Publication Type
Tip&Trick
Source
The Column
Year
2019
Publication date
16.01.2019
Issue
2
Author
D. Held, F. Gores
T&T GPC/SEC: Systematic errors in GPC/SEC/GFC
GPC/SEC results and their validity are crucial in many applications, e.g. as part of QC/QA tests in pharmaceutical applications or for the registration of polymeric products or formulations with…
Language
Publication Number
20481
Publication Type
Tip&Trick
Source
The Column
Year
2019
Publication date
21.10.2019
Issue
10
Author
D. Held, P. Kilz
T&T GPC/SEC: Temperature effects in GPC/SEC
Temperature effects in GPC/SEC are very often misunderstood and discussed without keeping the specialties of GPC/SEC in mind. From a thermodynamically point of view the GPC/SEC separation mechanism is…
Language
Publication Number
20316
Publication Type
Tip&Trick
Source
The Column
Year
2009
Publication date
21.08.2009
Issue
8
Author
T. Hofe, D. Held
T&T GPC/SEC: The Art of Analyzing High Molar Mass Samples
GPC/SEC is a method that can be used for a variety of samples with molar masses ranging from only a few hundred up to several million daltons. While handling of low molar mass samples is straight…
Language
Publication Number
20419
Publication Type
Tip&Trick
Source
The Column
Year
2014
Publication date
10.06.2014
Issue
6
Author
D. Held
T&T GPC/SEC: The importance of molar mass distributions
Why are molar mass distributions (MMD) important and what is the difference between a molar mass distribtution and a chromatogram?
Language
Publication Number
20254
Publication Type
Tip&Trick
Source
The Column
Year
2007
Publication date
31.08.2007
Issue
8
Author
D. Held
T&T GPC/SEC: UGPC? Making GPC/SEC faster
Ultra-HPLC (UHPLC) provides a new potential for method development and analysis. It is achieved by using sub-2 µm particle size column packing at increased linear velocities. The advantage of UHPLC…
Language
Publication Number
20324
Publication Type
Tip&Trick
Source
The Column
Year
2010
Publication date
10.04.2010
Issue
4
Author
D. Held, G. Reinhold, P. Kilz
T&T GPC/SEC: Understanding positive and negative detector signals
What are typical detectors in GPC/SEC? What are the differences between these detectors and their signals? Are negative detector signals possible and how can they be avoided? Application guide -…
Language
Publication Number
20288
Publication Type
Tip&Trick
Source
The Column
Year
2008
Publication date
04.12.2008
Issue
10
Author
D. Held, P. Kilz
T&T GPC/SEC: Upside Down - Inverse GPC for Pore Size Distributions
Gel permeation/size-exclusion chromatography (GPC/SEC) is the standard method for separating samples by molecular size and determining molar mass distributions. However, GPC/SEC instruments can also…
Language
Publication Number
20448
Publication Type
Tip&Trick
Source
The Column
Year
2016
Publication date
11.03.2016
Issue
2
Author
D. Held, P. Kilz
T&T GPC/SEC: UV-vis Detection
The most commonly applied detector in gel permeation chromatography/size-exclusion chromatography (GPC/SEC) is the differential refractive index detector, RI. How UV-vis detection, if applicable, adds…
Language
Publication Number
20464
Publication Type
Tip&Trick
Source
The Column
Year
2018
Publication date
15.08.2018
Issue
8
Author
D. Held
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