Waters 2420 ELS, Detector

Optics. Optical bench with heating element (constant temperature of 50°C).
light source. Multi-color tungsten halogen lamp, front mounted,
factory set, can be installed by user. Timer for the lamp.
History of lamp on time and serial number.
Calibration lamps. Adjustment/normalization of photomultiplier tubes
to compensate for wear over time. Detector.
Photoelectric multiplier. Adjustment of the FEU unit.
Individually for each FEU unit via integrated diagnostics