3.7 Preparation
3.7.4 Sample
Pretreatment
(1) Filter samples without fail if they may contain fine dust.
Dust can clog column and deteriorate it.
(2) Remove foreign matter from samples without fail.
Foreign matter can lower the reliability of data, e.g.
generating abnormal peaks etc.
(a) Example of Filtering Samples
Dust in sample can be removed easily as follows.
Take sample into a syringe, attach cartridge type
0.45
μ
m membrane filter, and perform filtering.
See the figure at left.
NOTE
: There are various ways of filtering sample.
Filter the sample in the way suitable for the
sample amount.
Filtering by cartridge
type 0.45
μ
m
membrane filter.
Filtered clean sample
(b) Example of Removing Foreign Matter from
Sample
For example, when analysis is performed with a
reversed phase column (e.g. ODS column),
foreign matter can be removed as follows.
Take sample into a syringe, attach a normal
phase cartridge, and perform filtering. See the
figure at left.
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Содержание CHROMASTER 5160
Страница 54: ...3 17 Fig 3 3b Connecting with the Chromaster 5260 Autosampler Injection valve Syringe valve Port4 ...
Страница 165: ...INDEX 3 U UI Pad 2 6 UTLTY 2 7 3 18 W Wiring covers 2 4 APPENDIX 1 19 Z Zero pressure calibration 3 18 ...
Страница 190: ...APPENDIX 3 2 Log book Means the information containing records of instrument operating conditions ...
Страница 221: ...3 1 Replacement Procedure b Replace the fuse with a new one and then attach the fuse holder by pressing it 3 2 ...
Страница 244: ......
Страница 406: ......
Страница 433: ...SAFETY 10 SAFETY SUMMARY WARNING and CAUTION Labels on Instrument 7 Before Turning on Xenon Lamp Front View ...
Страница 999: ...Retaining screws Fixing bracket Appended Fig 1 5 Removal of Fixing Brackets APPENDIX 1 13 ...
Страница 1016: ......
Страница 1022: ...Sample rack A component part on which a sample is set Logbook A historical record of instrument operation APPENDIX 3 2 ...