This article acts as an expert guide, designed to supplement the , offering a deeper dive into maintenance, optimization, and troubleshooting to ensure your chromatographic results are always accurate.
as standard. This regulates the cell temperature from 5°C above ambient up to 50°C, neutralizing baseline drift caused by room temperature fluctuations. Superior Linearity : Offers a wide dynamic range with linearity up to
Understanding the physical limits and capabilities of your hardware prevents experimental errors and instrument damage. Key Performance Metrics Deuterium ( D2cap D sub 2 ) lamp for UV range; Tungsten ( ) lamp for visible range (on the SPD-20AV model). Wavelength Range: 190 nm to 700 nm. Noise Level: shimadzu spd20a user manual better
While most users control the SPD-20A via chromatography data software (such as LabSolutions, Empower, or Chromeleon), the front panel keyboard offers powerful diagnostic commands.
The manual dedicates several pages to wavelength accuracy and spectrum scanning. In practice, many users set a single wavelength (e.g., 254 nm) and forget about it. This article acts as an expert guide, designed
The manual warns against high pressure in the flow cell. However, it often understates the effectiveness of passive cleaning .
Adjust the (typically 10 Hz or 20 Hz depending on your peak widths). Superior Linearity : Offers a wide dynamic range
for a recurring error message?
The SPD-20A is highly versatile. To get the best data, move beyond default settings.
: Open your software instrument control panel or navigate the module front-panel keypad. Check the box for Acquisition Channel 1 ON , assign your primary detection wavelength (e.g., 280 nm), and switch the lamp parameter from OFF to D2 .