Agilent 1200 Series Variable Wavelength Detectors Performance Characteristics: Faster results, improved sensitivity and absolute data security
This document presents a technical evaluation of the Agilent 1200 Series Variable Wavelength Detectors (VWD) and the high-speed VWD SL Plus. It compares their performance against an earlier model, highlighting improvements in optical design, data sampling rates, and baseline stability for applications ranging from conventional to ultra-fast HPLC.
Key performance metrics analyzed include noise levels, drift behavior, limit of detection (LOD) using anthracene, signal-to-noise ratios, and the ability to detect impurities at low concentrations. The text details how the new series achieves superior results through features like built-in electronic temperature control and high sampling rates up to 160 Hz.
| Wavelength range (Deuterium lamp) | 190 to 600 nm |
|---|---|
| Maximum sampling rate (VWD SL Plus) | up to 160 Hz |
| Sampling rate (Standard VWD) | up to 20 Hz |
| Noise improvement factor vs earlier model | 3.4 times better |
| Drift improvement factor vs earlier model | 2.4-fold improvement |
The limit of detection was determined to be 0.228 pg based on a 5 pg injection.
It is recommended to use the Agilent 1200 Series VWD SL Plus for rapid resolution and ultra-fast LC.
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