This refurbished Waters Delta Prep 4000 Preparative Chromatography System comes with the Waters Prep LC Controller, Waters 2487 Dual ? Absorbance detector and Waters Prep pump supplied. The Waters PrepLC 4000 System offers high resolution and preparative capacity – from hundreds of milligrams to grams per run and the best price/performance ratio of any preparative HPLC system. This Waters PrepLC 4000 system is ideal for dedicated preparative LC applications where high sample volumes can be cleaned, fractions collected and the column automatically rinsed before the next run. The system can also be used to check the purity of fractions - all using the same system. This refurbished Waters Prep 4000 system is in excellent condition. Several available. We have special expertise in analytical devices. Perfomance. 110 or 220V AC. temperatures. Operation: 4° – 40° C. Storage: 0° – 50° C. Maximum pressure. 4000psi (0.5-150ml/min). Surfaces in contact with liquids. 316 stainless steel, Teflon, sapphire, ruby. Sealing material. Filled PTFE. Exits. 4 event outputs (+12 or ground). 1 holding exit. 1 graph output (%A, %B, %C, %D, flow). 1 pressure outlet. Entrances. 1 injector. 1 Stop Flow. 1 holding entrance. Waters 2487 Dual Absorbance UV/Vis Detector. Specification. wavelength range. 190 to 700 nm. Bandwidth. <5 nm. Wavelength accuracy. +1.0 nm. Wavelength repeatability. +0.1 nm. Single ? Dry noise. <5 µAU. (at 230 nm, 1 second digital filter, 30 second segments, 10 Hz data plan, analytical cell). Wet noise. <8 µAU. (at 230 nm, 1 second digital filter, 30 second segments, 10 Hz data rate, analytical cell). Dual channel noise (dry). <35 µAU. (measured at 230 nm, runs from 230 to 280 nm with 2 second filter at 1 Hz data rate; dry, analytical cell). Dual channel noise (wet). <45 µAU. (measured at 230 nm, running from 230 to 280 nm with 2 second filter at 1 Hz data rate; 1 ml/min flow of acetonitrile, analytical cell). Linearity. <5% at 2.5 AU, propylparaben at 257 nm. Drift. 1.0 x 10^-4 AU/hr. max (?T = +2°C/hr. ). Thermal drift. 1.0 x 10^-4 AU/°C max (?T = +2°C/hr. ). Sensitivity adjustment range. 0.0001 to 4.0000 ADV. Filter settings area. Single wavelength: 0.1 to 5.0 seconds. Dual wavelength: 1 to 50 seconds. Time constant. Up to 5.0 second Hamming filter. Digital data rates. 1,2,5,10,20,40,80 Hz (single channel). 1.2 Hz (dual channel). Analogue output data rates (Single ? mode). 10,20,40,80 Hz (Channel A). 10 Hz only (Channel B). Lamp source. 30W high brightness deuterium lamp, 0.5nm aperture, pre-aligned 2000 silicon photodiodes (same pair). Secondary filter. Automatic for wavelengths > 370 nm. Wavelength calibration filter. Erbium filter, used at startup or on request. Flow cell. TaperSlit flow cell design. Nitrogen flush. Flush connection available on the optics bench. light path. 10 mm (standard analysis). Cell volume. 10 µL (standard analysis). Pressure limitation. 6895 kPa (69 bar, 1000 psi). Materials. 316 stainless steel, quartz glass, Tygon. Operating temperatur. 4 to 40°C. Operating humidity. 20% to <95%, non-condensing. Transport and storage temperature. -30 to +60 °C. Transport and storage humidity. 0% to <95% non-condensing Labprocure is responsible for this device.