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Fruit
Acids and Fatty Acids
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UltraSep ESD FS
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For the separation of small
molecular acids,
especially of fruit acids in food stuffs and similar materials, the packing
UltraSep ES FS was developed. In the simplest case it is possible to use the
method of ion
suppression (Application FS1). If the mixtures of fruit acids cannot be
separated satisfactory in this manner, individual solutions can be achieved by
ion pairing chromatography (IPC; Application FS2).
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UltraSep
ES WAX FS and UltraSep ES
WAXI
FS
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For
the case that special mixtures of mono- and di- or tricarbonic acids cannot be
separated satisfactory by the methodical variants mentioned above, it is
possible to determine the monocarbonic acids separately by the ion exchanger
UltraSep ES WAX FS (Application FS3). Di- and tricarbonic acids will be removed
from the column by back-flushing and, if necessary, separated by UltraSep ESD
FS.
The
weak imino groups carrying ion exchanger UltraSep ES WAXI FS extends the
selectivity of UltraSep
ES WAX FS for monocarbonic acids within the pH range of 3.0 – 3.5 (Application FS4).
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UltraSep ES FS
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With this packing the separation
of homologeous fatty acids by gradient elution is no problem (Application FS5).
For the higher fatty acids we recommend
UltraSep RP18 M500 (Application FS6).
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Examples of
Analyzed Compounds |
Analyzed in Application
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Go to |
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Acetic
acid |
FS1,
FS3, FS4, FS5 |
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Arachinic
acid |
FS6 |
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iso-Butyric
acid
|
FS5 |
FS1 |
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n-Butyric
acid
|
FS5 |
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Caprinic
acid |
FS6 |
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iso-Capronic
acid
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FS5 |
FS2 |
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n-Capronic
acid
|
FS5 |
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Citric
acid
|
FS1,
FS2 |
FS3 |
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Elaidinic
acid |
FS6 |
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Formic
acid
|
FS1,
FS2, FS3, FS4 |
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Fumaric
acid |
FS1,
FS2 |
FS4 |
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Glycolic
acid
|
FS2,
FS3, FS4 |
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Lactic
acid |
FS1,
FS3, FS4 |
FS5 |
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Lauric
acid |
FS6 |
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Malic
acid |
FS1 |
FS6 |
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Myristic
acid |
FS6 |
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Oxalic
acid
|
FS2 |
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Palmitinic
acid |
FS6 |
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Propionic
acid
|
FS5 |
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Quinic
acid |
FS2,
FS3, FS4 |
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Shikimic
acid
|
FS4 |
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Stearic
acid |
FS6 |
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Succinic
acid
|
FS1,
FS2 |
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Tartaric
acid |
FS1,
FS2 |
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iso-Valeric
acid
|
FS5 |
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n-Valeric
acid
|
FS5 |
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Vitamin
C
|
FS3,
FS4 |
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Separation
of carboxylic acids with Polymeric Phases |
POL |
COLUMNS
and PRICES
(€) |
|
Column size (mm) |
250 x 4 |
250 x 3 |
250 x 2 |
125 x 4 |
125 x 3 |
125 x 2 |
UltraSep ESD FS |
360.00 |
340.00 |
355.00 |
320.00 |
295.00 |
290.00 |
UltraSep ES WAX
FS |
250.00 |
225.00 |
245.00 |
220.00 |
195.00 |
215.00 |
UltraSep ES WAX
FSI |
290.00 |
290.00 |
290.00 |
265.00 |
265.00 |
265.00 |
UltraSep ES FS |
220.00 |
220.00 |
240.00 |
195.00 |
195.00 |
205.00 |
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Size (mm)
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10 x 4 |
10 x 3 |
10 x 2 |
Precolumn
cartridges
(Price per pack = 5 pieces) |
170.00 |
170.00 |
170.00 |
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