It is well recognized that evaporative light scattering detectors (ELSD) can outperform traditional detectors when analysing non-chromophoric samples by HPLC, as the detection method does not rely on the optical properties of the analyte. ELSD detectors detect all compounds less volatile than the mobile phase, and with the advantage of low temperature operation, the benefits of ELSD compared to UV or RI now apply to an even wider range of HPLC applications.
Polymer Laboratories (PL), now a part of Varian, Inc., is a world leader in the design, build, service, and support of evaporative light scattering detectors, with almost 20 years' experience in this field. PL's ELSDs continue to lead the way in the development of the technology, with the performance of our instruments matched to customers' requirements.
PL Varian's three models of ELSD will deliver you high quality, high sensitivity, state of the art evaporative light scattering detection at an affordable price.
For further information on ELSD applications visit our Technical Bulletin Download section.
| Analysis | PL-ELS 1000 | ||
| HPLC analysis of non-volatile compounds |
Y |
Y | Y |
| HPLC analysis of semi-volatile compounds |
Y |
Y | X |
| Highly volatile compounds |
Y |
X | X |
| Ambient GPC Analysis |
Y |
Y | Y |
| High temperature GPC analysis | X | X | Y |
| Analysis | PL-ELS 1000 | ||
| Light Source | LED 480 nm | LED 480 nm | Tungsten/Halogen Lamp |
| Detector | Photomultiplier tube digital signal processing | Photomultiplier tube digital signal processing | Photodiode |
| Temperature Range Evaporator Nebulizer Heated Transfer Line (opt) |
OFF, 30 - 120 °C OFF, 30 - 90°C Not available |
OFF, 10 - 80 °C OFF, 25 - 90°C Not available |
30 - 300°C 30 - 220°C 30 - 220°C |
| Nebulizer Typical Inlet Pressure Maximum Inlet Pressure Gas Flow Rate |
60 - 100psi 100psi 0.9 - 3.25 SLM |
60 - 100psi 100psi 0.9 - 3.25 SLM |
60 - 100psi 150psi 0 - 2.0 SLM |
| Eluent Flow Rate | 0.2 - 5 mL/min | 0.2 - 5 mL/min | 0 - 5 mL/min |
| Analog Output | 0 - 1V FSD | 0 - 1V FSD | 0 - 1V and 0 - 10V FSD |
Digital Output |
24 bit digital data, 10 or 40 Hz | 24 bit digital data, 10 or 40 Hz | |
| Communications |
Serial I/O (RS232), |
Serial I/O (RS232), |
Serial I/O (RS232), contact closure, TTL, heated transfer line control |
| Operation |
Graphical Vacuum, Fluorescent |
Graphical Vacuum, Fluorescent display and keypad or Windows based PC control |
Detachable IR control pad or Windows-based PC control |
| Power Requirements | 90/120V AC or 220/250V AC, 50/60Hz 2A max |
90/120V AC or 220/250V AC, 50/60Hz 2A max |
90/120V AC or 220/250V AC, 50/60Hz |
| Dimensions (wxdxh) | 200x450x415 mm | 200x450x415 mm | 175x480x430 mm |
| Weight | 13 kg | 13 kg | 15 kg |