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Test-Chromatograms from Fused-Silica Nanocolumns |
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Using LC Nanocolumns easily improves the mass sensivity by a factor of up to
5000 compared with a 4.6 mm id column.
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1.)
Dimension: 150 mm x 75 µm
Phase: Reprosil-Pur C18-AQ, 3 µm
Part.No.: R13.aq.s150.075
Batch-No.: 120305 86401
Eluent: ACN / water (70 /30)
Flow rate: 200 nl / min.
Pressure: 90 bars
Detection: UV 254 nm
Result:
Peak 1: Nitrobenzene , RT 2.96 min. N/m = 70 000
Peak 2: Biphenyl, RT 6.8 min.N/m = 120 000
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2.)
Dimension: 200 mm x 75 µm
Phase: Reprosil-Pur 300 ODS-3, 3 µm
Part.No.: R33.93.s200.075
Batch-No.: 280905 16001
Eluent: ACN / water (70 /30)
Flow rate: 200 nl / min.
Pressure: 100 bars
Detection: UV 254 nm
Result:
Peak 1: Nitrobenzene, RT 4.65 min. N/m = 54 000
Peak 2: Biphenyl, RT 7.9 min. N/m = 95 000
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Increase of Mass Sensivity depending of inner column-diameter |
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Column-
id (mm) |
Flow
(µl/min)
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Increase of Sensivity |
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4.6 |
1000 |
1 |
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2.0 |
200 |
4 |
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1.0 |
40 |
21 |
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0.5 |
10 |
85 |
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0.3 |
3 |
235 |
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0.1 |
0.5 |
2100 |
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0.075 |
0.3 |
3760 |
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Prices for Capillary Columns in Euro |
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Fused Silica capillary columns with |
50 µm, 75 µm, 100µm, 150 µm id |
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Stainless steel GLT-columns with |
0.3mm0.4mm 0.5mm 0.75mm id |
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Prices for all kind of silica HPLC-phases:
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For polymeric phases (Poros, Hamilton): + 50 Euro extra.)
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Column-Length in mm: |
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40 |
125 |
150 |
200 |
250 |
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Part-no.: |
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..s04xxx |
..s12xxx |
..s15xxx |
..s20xx |
..s25xxx |
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Inner diamter 50 µm – 0.75 mm: |
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355,- |
370,- |
375,- |
380,- |
400,- |
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Bulk material on request
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up |
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