Sensitive, universal HPLC detection. Low temperature technology.
Light scattering detector Sedex 80LT
Article number: A0754The Light Scattering Detector Sedex 80LT was developed for HPLC applications. Common fields of application include the analysis of non-UV active compounds such as: sugars, fats, surfactants, polymers, pharmaceuticals, amino acids or peptides as well as natural compounds. The analytes are being detected after evaporation of the mobile phase and thus become nearly independent from eluent composition.
The low temperature technology works in three steps: 1. Nebulization of the effluent and dicsrimination in favor of small mist droplet fraction in order to minimize background noise; 2. Evaporate the eluent at low temperatures to avoid thermal decomposition of delicate analytes; 3. Gas supported focussing of the analyte stream to increase sensitivity during light scattering detection and to avoid contamination of the optical unit.
| Detection | |
|---|---|
| Detector type | high sensitivity photomultiplier |
| Light source | selected high effciency blue LED (470 nm), elapsed-time counter |
| Sensitivity | < 5 ng caffein (LOD) |
| Maximum data rate | analog: 40 Hz, digital: 30 Hz |
| Nebulizer | |
| Gas | nitrogen preferred |
| Gas flow rate | < 3 l/min |
| Gas inlet pressure | 3.5 bar (51 psi) |
| HPLC flow rate | HPLC nebulizer: 100 µl/min–2 ml/min Chiral chromatography nebulizer: 0.8 ml/min–5 ml/min Flash chromatography nebulizer: 100 µl/min–5 ml/min |
| Maintenance | easily accessible from the front for cleaning |
| Heated zone | |
| Temperature range | ambient to 100 °C |
| Communication | |
| Gain | factor 1 to 2048 in 12 steps (2 1 to 2 11) |
| Filter | moving average (0–10 seconds) |
| Analog outputs | 0–1 V |
| Analog control input | contact closure for ready, auto-zero |
| Control | RS-232 |
| Power-down methods | shut-off: gas, LED, heating and/or PMT cleaning mode |
| Technical parameters | |
| Display | liquid crystal |
| General | |
| Power supply | 230 V/50 Hz, 1.7 A; 115 V/60 Hz, 1.8 A |
| Dimensions | 250 mm x 480 mm x 550 mm (W x H x D) |
| Weight | 18.5 kg |
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Light Scattering Detector Sedex 80LT | Sensitive, universal HPLC detection. Low temperature technology. |
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Replacement LED | A07541 | for Sedex 80 / Sedex 85 |
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Light scattering detector Sedex 85LT | A0754-1 | highly sensitive, universal ELSD detection for HPLC, low temperature technology, supports high data rates |
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Light scattering detector Sedex 85LT | A0754-2 | highly sensitive, universal ELSD detection for UHPLC, low temperature technology, supports high data rates |
Technical data are subject to change without notice.