Crucially, the SPD-20AV uses a movable mirror (M1) that automatically switches between the D2 and W lamps depending on the set wavelength. The manual often assumes you understand this optical pathway; here’s the simpler reality:
If using tungsten (W) lamps for visible range detection, replace them similarly when energy is low. Flow Cell Care
The official manual tells you what to do; this chapter tells you how to do it better, including the critical step of resetting lamp usage timers.
column volumes through the system before starting the sample sequence. shimadzu spd20a user manual better
Perform hardware validation after installation to ensure compliance. 4. Maintenance and Best Practices
Reset the internal software lamp hour odometer to ensure accurate tracking of consumable lifespans. Flow Cell Care and Flushing
, recognized for its industry-leading noise levels and exceptional baseline stability. Key Performance Features Ultra-High Sensitivity : Achieves a noise level of just Crucially, the SPD-20AV uses a movable mirror (M1)
Never use high-pressure cleaning methods directly on the cell inlet without checking the allowed pressures in the manual. C. Setting Optimal Time Constants (Response)
If you are analyzing compounds that absorb at vastly different wavelengths, utilize the program function to switch wavelengths during the run to maximize sensitivity for each component. 3. Advanced Troubleshooting: Solving Common Issues
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: Usually caused by temperature instability or air bubbles in the flow cell. Ensure the temperature control is active and the system is properly degassed.
The Shimadzu SPD-20A is a high-sensitivity UV-VIS detector designed for the Prominence HPLC series . While the official SPD-20A Instruction Manual
Before adjusting your system, verify these critical operational limits against your current methods: Deuterium ( D2cap D sub 2 ) lamp for UV range (190–600 nm); Tungsten ( ) lamp for visible range (600–700 nm). Wavelength Range: 190 nm to 700 nm. Wavelength Accuracy: ±1 nm. Bandwidth: 8 nm.
Troubleshooting and diagnostics