Shimadzu SPD-M20A HPLC Photodiode Array Detector (PDA)


  • Shimadzu SPD-M20A Photodiode Array Detector (PDA)
    • Standard Flow Cell
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Item#: 11290
Model: SPD-M20A
Condition: Tested
Manufacturer: Shimadzu

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Shimadzu SPD-M20A HPLC Photodiode Array Detector (PDA)

The SPD-M20A High Performance Liquid Chromatography PDA detector provides users with the most advanced level of sensitivity and stability found in today's PDA detectors. Sharing many of the qualities of the SPD-20A/20AV UV-Vis Detectors, the SPD-M20A attains sensitivity levels approaching the most advanced UV-Vis detectors. It has a high-sensitivity mode with an 8 nm slit width. Using light-source compensation, it offers a noise level of 0.6×10-5 AU, which is comparable to that of traditional UV-VIS detectors.


Greater Baseline Stability
Supplied as standard, a temperature-controlled flow cell eliminates inconsistencies caused by changes in absorbance due to shifts in room temperature. This helps increase the baseline stability and the analysis reliability.

Superior Linearity - 2.0AU
Using newly developed signal processing technology, the stray-light correction function has been enhanced, and the linearity has been improved. This expanded linearity combines with various noise-reduction technologies to provide users with a wide dynamic range and allow for the analysis of your target compound and minor impurities in a single run.

Web Browser Control
The SPD-M20A is equipped with an Ethernet interface and Web-control functions, allowing devices to be monitored and controlled from PCs in the network. As a standalone high-sensitivity multi-wavelength detector, it can be incorporated into non-Shimadzu HPLC systems.


Photodiode array elements512 elements
Light sourceDeuterium lamp, Tungsten lamp
Measurement wavelength range190 – 800 nm
Wavelength accuracy± 1 nm
Element resolution1.2 nm / element
Slit width1.2 nm, 8 nm; slit switching possible
Spectral resolution1.4 nm or less (using 253.7 nm low voltage Mercury lamp emission line, 1.2 nm slit)
Noise level± 0.3x10-3 AU/h or less
Drift0.5x10-3 AU/h or less
Temperature coefficient0.5x10-3 AU/℃ or less (250 nm, 600 nm, air cell, time constant 2 sec)
Analogoutput 4 channels
Analog output range0.5, 1, 1.25, 2, 2.5, 4 AU/V (selectable)
Voltage output range-0.1 – 1.0 (V)
Safety featuresTemperature sensor: 100℃ (lamp housing heat protection)
Temperature fuse: 116℃ (power supply circuit board protection)
Leak sensors: Leak detection at flow cell and tubing joints
Lamp coversensor Lamp automatically extinguished if the cover is removed (UV light protection, high voltage protection)
Operating conditions4 – 35℃, 45 – 85% humidity, no condensation
Dimensions and weightW 260 x H 140 x D 420 mm; 12 kg
Power requirements100/120/220-240 VAC, 150 VA, 50/60 Hz


Standard Flow Cell Specifications:
Optical path length10 mm
Cell volume10 µl
Pressure resistance12 MPa
Wetted surface materialsSUS316L, quartz glass, PFA
Inlet tubingI.D. 0.25 mm x length 550 mm
Outlet tubingI.D. 0.25 mm x length 250 mm
Cell temperature controlYes
Cell temperature control settingsOFF, 9 – 50℃ (in 1℃ steps), set at ambient +5℃ or above
Cell temperature control precision0.1  

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Shimadzu SPD-M20A HPLC Photodiode Array Detector (PDA)

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