2998 Photodiode Array (PDA) Detector
Ultimate chromatographic sensitivity in photodiode array detection
Adding spectral conformation to your absorbance detection while maintaining high sensitivity and a wide linear dynamic range can be a challenge. The Waters 2998 Photodiode Array (PDA) Detector is designed to do just that while complementing your LC and LC-MS systems.
The uniquely integrated software and optics innovations of the 2998 PDA Detector deliver no-compromise chromatographic and spectral sensitivity and noise specification as low as 10 μAU. For routine analyses, the 2998 PDA Detector is reliable and easy-to-use, with enhanced software control for simultaneous 2D and 3D operation with either Empower or MassLynx Software – making it the ideal detector for any lab application, from compound identification to method development.
Specifications
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Wavelength range |
190 to 800 nm |
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Wavelength accuracy |
±1 nm (via patented Erbium filter) |
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Wavelength repeatability |
±0.1 nm |
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Bandwidth |
1.2 nm |
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Photodiodes |
512 |
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Digital resolution |
1.2 nm/pixel |
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Linearity range |
≤5% at 2.0 AU, propylparaben, 257 nm, dry analytical flow cell |
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Baseline noise |
≤10 x 10-6 AU peak to peak, 254 nm, 2 points/s, 1.0 s, 30 s segments, bandwidth 3.6 nm (3-pixel bunch), dry analytical flow cell |
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Drift |
≤1.0 x 10-3 AU/hour, 254 nm, 2 points/s, 1.0 s, 30 s segments, bandwidth 3.6 nm (3-pixel bunch), dry analytical flow cell |
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Sampling rate |
Up to 80 points/s |
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Light source |
Deuterium arc lamp Warranty: 2000 hours or one year (whichever comes first) |
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Flow cell design |
Patented TaperSlit |
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Path length |
10 mm (analytical flow cell) |
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Flow cell volume |
8.4 μL (analytical flow cell) |
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Pressure limit |
1000 psi (analytical flow cell) |
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Wetted materials |
Alliance HPLC/ACQUITY Arc: 316 stainless-steel, fused silica, PEEK, fluoropolymer ACQUITY Arc Bio: fluoropolymer, fused silica, MP35N, PEEK, titanium |
Overview
- Enhanced software control provides flexibility for simultaneous 2D and 3D operation with either Empower or MassLynx Software
- High-quality spectral resolution by operating at a fixed optical resolution of 1.2 nm
- Capable of determining spectral homogeneity, yielding confidence in method specificity
Recommended Use: Ideal for spectral conformation in absorbance detection for any lab application, from compound identification to method development.
Features Header
Superior linearity
The 2998 PDA Detector offers more than 4.5 orders of linear dynamic range allowing for simultaneous quantification of high-, and low-level components within a single chromatographic separation. Detector sensitivity and spectral resolution can be optimized by adjusting the digital resolution
Reliable co-elution detection
The 2998 PDA Detector combined with Empower software employs powerful capabilities for determining spectral homogeneity, yielding confidence in method specificity. The 2998 PDA Detector is compatible with Empower and MassLynx setup, status monitoring, and diagnostics that are easily accessible through the software’s intuitive console and easy-to-learn interface.
Optical and digital resolution and definitive compound identification
The 2998 PDA Detector operates at a fixed optical resolution of 1.2 nm, providing high-quality spectral resolution. The low detector noise performance allows you to operate at maximum digital resolution and not sacrifice linearity.
Distinguishing between compounds is also critical for your lab. While most PDA detectors can distinguish between compounds possessing comparatively large spectral differences, the 2998 PDA Detector can differentiate between the spectra of closely related compounds.
