DU-8800DS Double Beam UV/VIS Spectrophotometer
The DU-8800DS Double Beam UV/VIS Spectrophotometer is an advanced analytical instrument designed with a double beam optical system to ensure stability and accuracy during long-term measurements. With a fixed bandwidth of 1.8 nm, it is ideal for research, biochemical, and pharmaceutical laboratory applications.

Specification
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Model: DU-8800DS
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Wavelength Range: 190–1100 nm
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Spectral Bandwidth: 0.5/1/1.5/2/4/5 nm adjustable
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Optical System: Double Beam, Blazed Holographic Grating (1200 lines/mm)
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Wavelength Accuracy: ±0.3 nm
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Wavelength Repeatability: ≤0.2 nm
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Wavelength Setting: Auto, 0.1 nm resolution
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Photometric Range: 0–200%T, -0.3–3A, 0–9999C
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Photometric Accuracy: ±0.002A (0–0.5A), ±0.003A (0.5–1A), ±0.3%T (0–100%T)
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Photometric Repeatability: ≤0.001A (0–0.5A), ≤0.002A (0.5–1A), ≤0.2%T (0–100%T)
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Stray Light: ≤0.05%T (220/360 nm)
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Scan Speed: High, Medium, Low; up to 2000 nm/min
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Baseline Flatness: ±0.001A
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Stability: ±0.001A/h (500 nm, 0A)
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Noise: ≤0.2%T/3min (250/500 nm, 0%T); ≤0.3%T/3min (250/500 nm, 100%T)
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Sample Compartment: Supports 5–100 mm cuvettes
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Detector: Silicon Photodiode
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Lamps: Tungsten & Deuterium (pre-aligned)
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Display: Graphic LCD (128×64 dots)
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Keypad: 30-key alphanumeric membrane keypad
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Output Ports: USB & RS232
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Printer: Mini serial printer; PC printer support
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PC Software: PC scanning software
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Power Supply: AC 90–250 V, 50/60 Hz
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Dimensions: 545 × 468 × 245 mm
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Weight: Net 21 kg / Gross 25 kg
Description
Features of DU-8800DS
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Double beam design ensures low drift, low noise, and low stray light
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High-speed MCU and high-precision AD with large storage capacity
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Large LCD display (320×240 dots)
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8 nm bandwidth complies with Pharmacopoeia requirements
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Real-time storage of data and curves
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Online software upgrade capability
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Independent lamp control (Tungsten/Deuterium)
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Easy replacement with pre-aligned lamps
Functions of DU-8800DS
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Photometric measurement
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Quantitative analysis (standard curve)
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Wavelength scanning (spectrum scan)
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Time scan (kinetics)
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DNA/Protein test
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Multi-wavelength test
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System utility functions