SPD-20A/20AV UV-Vis Detector
Prominence HPLC UV-Vis Detectors
Part of the SPD-20 Series, which also includes the SPD-M20A Photo Diode Array Detector, the SPD-20A/20AV UV-Vis detectors offer an exceptional level of sensitivity and stability. Taking sensitivity to the limit, the SPD-20A/20AV has a noise level of 0.5×10-5 AU max., making it the world's most sensitive UV-Vis detector (ASTM Standards). One mode of the SPD-20AV allows both the deuterium and tungsten lamps to be lit simultaneously, enabling high-sensitivity wavelength-programming detection for ultraviolet light and the entire visible-light range.
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 - 2.5AU
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.
Internal Validation Protocol
The incorporation of a low-pressure mercury lamp for wavelength calibration ensures simple calibration in the ultraviolet region.
Monitor two components in the UV or VIS range simultaneously
Simultaneous D2 and W lamp Illumination
Available with the SPD-20AV, users can eliminate warm-up time and baseline disturbances during wavelength programming between the UV and Visible range. With both lamps lit, high-sensitivity analysis throughout the full wavelength spectrum is ensured.
|Light source||Deuterium (D2) lamp||Deuterium (D2) lamp, tungsten (W) lamp|
|Number of diode elements||None|
|Wavelength range||190 to 700 nm||190 to 900 nm|
|Bandwidth, slit width||8 nm|
|Wavelength accuracy||1 nm max.|
|Wavelength precision||0.1 nm max|
|Noise||0.5 X 10-5 AU (under specified conditions)|
|Drift||1 X 10-4 AU/h (under specified conditions)|
|Linearity||2.5 AU (ASTM standard)|
|Functions||Dual-wavelength detection in the range 190 to 370 nm and upwards of 371, ratio-chromatogram output, wavelength scanning|
|Cell||Optical wavelength: 10 mm, capacity: 12µL, withstand pressure: 12 MPa|
|Cell temperature-control range||5oC above room temperature to 50oC|
|Web control||Parameter setting, log management, monitor detector output, management of consumable parts, etc. Parameter setting, log management, management of consumable parts, etc.|
|Buffer memory||Refer to CBM-20A/Alite|
|Operating temperature range||4oC to 35oC|
|Dimensions, weight||260 (W) x 140 (H) x 420 (D) mm, 13 kg|
|Power requirements||100 VAC, 160 VA, 50/60 Hz|