Shimadzu Spd20a User Manual Jun 2026

The SPD-20A can monitor two different wavelengths simultaneously (e.g., 210 nm and 254 nm) by rapidly alternating the internal mirror mechanisms. Note that using dual-wavelength mode slightly increases baseline noise compared to single-wavelength mode due to the shared sampling time. 5. Maintenance: Lamp and Flow Cell Replacement

Allow the detector to warm up for at least 30-60 minutes to ensure baseline stability.

Regularly flush the cell with appropriate solvents to prevent contamination, especially after analyzing complex matrices.

Check if the lamp is at the end of its life, or if the solvent contains dissolved air (requires degassing). shimadzu spd20a user manual

Start the HPLC pump to flush the flow cell with your mobile phase at the method's flow rate. Ensure no air bubbles are trapped inside the cell.

Monochromator initialization failed during startup calibration.

Enables simultaneous monitoring of two different wavelengths to verify peak purity. 2. Installation & Setup Maintenance: Lamp and Flow Cell Replacement Allow the

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Forces the current absorbance reading to 0.0000 AU. Standard Startup Sequence

Gently pull the plastic lamp power connector out of its socket. Start the HPLC pump to flush the flow

Regular maintenance is essential to avoid downtime and ensure peak performance. Deuterium ( D2cap D sub 2 ) Lamp Replacement D2cap D sub 2 lamp has a limited lifespan (usually ∼2000tilde 2000

If the baseline is noisy or the sensitivity is low, purge the flow cell with appropriate solvent (e.g., methanol or water). 4. Maintenance Procedures for Optimal Performance Regular maintenance is crucial for the longevity of the A. Lamp Replacement

is a renowned Prominence HPLC UV-Vis detector, widely praised for its exceptional sensitivity, stability, and versatility in analytical laboratories . Whether you are running routine pharmaceutical analysis or complex research projects, understanding how to operate and maintain this detector is crucial for producing reliable data. This guide serves as an extensive overview of the Shimadzu SPD-20A