hours). Replace it when sensitivity drops significantly or when the detector fails to calibrate. Turn off the power and let the lamp cool.
The deuterium lamp has a limited lifespan (approx. 2000 hours). shimadzu spd20a user manual
Check hours : Press the button on the front panel until "Lamp Hour" is displayed. Flow Cell Care : hours)
The manual details how to collect data at two wavelengths simultaneously: shimadzu spd20a user manual