General
Solvent delivery method Parallel-type double plunger
Plunger capacity 10µL
Maximum discharge
pressure 40MPa
Flow-rate setting range 0.0001 to 10.0000 mL/min.
Flow-rate accuracy No more than 1% or 0.5µL/min., whichever is greater (0.01 to 2 mL/min.)
Flow-rate precision No more than 0.06% RSD or 0.02 min SD, whichever is greater
Pulsation 0.1 MPa (for water at 1.0 mL/min. and 7MPa)
Constant-pressure solvent
delivery Supported
Plunger rinsing
mechanism product Manual rinsing or automatic rinsing using optional
Safety measures Liquid-leakage sensor, high-pressure/low-pressure limits
Operating temperature
range 4oC to 35oC
Dimensions, weight 260 (W) x 140 (H) x 420 (D) mm, 10 kg
Power requirements 100 VAC, 150 VA, 50/60 Hz
Gradient system LC-20AD/20AT, low-pressure GE specifications
Gradient type Low-pressure mixing
Number of mixed solvents 4 max.
The SPD-M20A PDA detector
Light source Deuterium (D2) lamp, tungsten (W) lamp
Number of diode 512
elements
Wavelength range 190 to 800 nm
Bandwidth, slit width 1.2 nm (high-resolution mode), 8 nm (high-sensitivity mode)
Wavelength accuracy 1 nm max.
Wavelength precision 0.1 nm max
Noise 0.6 X 10-5 AU (under specified conditions)
Drift 5 X 10-4 AU/h (under specified conditions)
Linearity 2.0 AU (ASTM standard)
Functions Contour output, spectrum library, MAX plotting
Cell Optical wavelength: 10 mm, capacity: 10µL, withstand pressure: 12 MPa
Cell temperature-control
range 5oC above room temperature to 50oC
Web control Parameter setting, log management, management of consumable parts, etc.
Buffer memory Approx. 20 minutes of data in the entire wavelength region
Operating temperature
range 4oC to 35oC
Dimensions, weight 260 (W) x 140 (H) x 420 (D) mm, 12 kg
Power requirements 100 VAC, 150 VA, 50/60 Hz
Enhanced Solvent Delivery Specifications
Flow-rate accuracy and precision in the micro-flow rate region have been improved with the addition of a new type of check valve and modifications to the solvent delivery control method. Non-polar organic solvents such as hexane can be delivered stably.
Improved Durability
New and improved plunger seal materials ensure robust, long-lasting performance. A sapphire plunger optimized according to its crystal structure and a precise plunger-holding mechanism help increase the service life of plunger seals and enable stable solvent delivery over long periods.
Space-saving Designs
An optional low pressure gradient valve (LC-20AD/20AT), CBM-20Alite system controller, and a seal wash pump (LC-20AD) can now be installed inside the solvent delivery unit, enabling 4-solvent gradient elution in a compact space.
The SPD-M20A PDA detector
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.
