Data You Want to See Many biochemistry applications require information at specific, important wavelengths, instead of a full spectrum analysis. For example, the Bradford, BCA and Lowry assays for protein analysis rely on specific wavelengths. LEDspec is ideally suited for oceanographic applications such as detecting nM concentrations of nitrite/nitrate, phosphate and iron using WPI’s LWCC sample cells. Two or four independent channel FIA detection systems can be assembled using a LEDspec-2 or LEDspec-4, respectively. LEDspec and LEDspecUV are stand-alone LED-based biophotometric detection systems designed to give you the information you want to see. Now you can conduct flow analysis and single-scan applications with high precision and a large dynamic range. LEDspec can be equipped with up to 7 LEDs of different wavelengths. Its noise (< 0.1 mAU peak to peak) and drift performance (<0.5 mAU/h) exceeds that of a CCD or photodiode array detection system at a fraction of the cost. LEDspec uses dual–beams to reduce light source drift. Conventional single beam spectrometers notice baseline drift caused by warm up, temperature stability and bulb aging. A reference channel in the LEDspec corrects for baseline while you make sample measurements. LEDSPEC SPECifiCAtiOnS OPTICAL BASICS CHANNELS DETECTOR SPECTRAL BANDWIDTH (FWHM) DYNAMIC RANGE DETECTOR RESOLUTION NOISE (PEAK TO PEAK) WARMUP TIME FIBER OPTIC INPUT DRIFT DIGITAL INPUTS AND OUTPUTS ANALOG OUTPUT DIMENSIONS (W*H*D) WEIGHT INTERFACE MAINS LED-based multiple wavelength detector with build-in reference channel 2 or 4 Photodiode 10 nm (LEDs >400nm) 4 nm (260, 280, 340nm LEDs) 0-3 AU 24 Bit < 0.1 mAU Instant 600 μm < 0.5 mAU/h 8/8 +/- 10 V, scaleable output 290 x 80 x 250 mm (11.4” x 3.2” x 9.9”) 2 kg (2.2 lbs) USB 100 – 240 V / 50 - 60 Hz Data Collection and Analysis Now, you can analyze output data with LEDspec's easy-to-use software and export chromatographs directly to your PC (via USB) in Microsoft® Excel format. Software provides: l Full computer control of LEDspec l Continuous flow or single-shot analysis of up to four independent channels simultaneously or sequentially. l Immediate calibration and analysis (mean and standard deviation) of up to four channels LEDSPEC-2 LEDSPEC-4 89273 89272 89274 89245 89246 89247 89248 89275 89276 89249 PERiPRO-4LS MiniStAR LEDspec biophotometric detection system (VIS), 2 channel, 3 LED modules (choose when ordering) LEDspec biophotometric detection system (VIS), 4 channel, 3 LED modules (choose when ordering) LED module, 260 nm LED module, 280 nm LED module, 340 nm LED module, 400 nm LED module, 450 nm LED module, 540 nm LED module, 560 nm LED module, 600 nm LED module, 650 nm LED module, 700 nm Peri-Star Pro, 4-channel, low rate, small tubing (see page 166) Miniature Peristaltic Pump, 1-channel (see page 168) SPECTROSCOPY World Precision Instruments UK: Tel: +44 (0)1462 424700 • wpiuk@wpi-europe.com www.wpiinc.com Germany: Tel: +49 (0)30-6188845 • wpide@wpi-europe.com US: Tel: 941-371-1003 • sales@wpiinc.com 193