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.

Features:

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.

Specifications:

Photodiode array elements	512 elements
Light source	Deuterium lamp, Tungsten lamp
Measurement wavelength range	190 – 800 nm
Wavelength accuracy	± 1 nm
Element resolution	1.2 nm / element
Slit width	1.2 nm, 8 nm; slit switching possible
Spectral resolution	1.4 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
Drift	0.5x10^-3 AU/h or less
Temperature coefficient	0.5x10^-3 AU/℃ or less (250 nm, 600 nm, air cell, time constant 2 sec)
Interface	Ethernet
Analog	output 4 channels
Analog output range	0.5, 1, 1.25, 2, 2.5, 4 AU/V (selectable)
Voltage output range	-0.1 – 1.0 (V)
Safety features	Temperature 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 cover	sensor Lamp automatically extinguished if the cover is removed (UV light protection, high voltage protection)
Operating conditions	4 – 35℃, 45 – 85% humidity, no condensation
Dimensions and weight	W 260 x H 140 x D 420 mm; 12 kg
Power requirements	100/120/220-240 VAC, 150 VA, 50/60 Hz

Standard Flow Cell Specifications:
Optical path length	10 mm
Cell volume	10 µl
Pressure resistance	12 MPa
Wetted surface materials	SUS316L, quartz glass, PFA
Inlet tubing	I.D. 0.25 mm x length 550 mm
Outlet tubing	I.D. 0.25 mm x length 250 mm
Cell temperature control	Yes
Cell temperature control settings	OFF, 9 – 50℃ (in 1℃ steps), set at ambient +5℃ or above
Cell temperature control precision	0.1