These purified Waters AllianceHT 2790 and 2795 HPLC systems come with a Waters 2996 PDA detector. We also have other Waters HPLC detectors as options:. - Waters 996 photodiode array detector. - Waters 2996 PDA detector. - Waters 2998 PDA detector. - Waters 2487 dual wavelength detector. - Waters 474 scanning fluorescence detector. - Waters 2475 Fluorescence Detector. - Waters 410 refractive index detector. - Waters 2410 RID. - Waters 2414 RID. This reconditioned Waters Alliance 2790 HPLC system is in excellent condition. Solvent management:. - Number of solvents: One to four, three with vacuum degassing. - Solvent conditioning: vacuum degassing, three solvents plus rinsing solution. - Typical operating flow range: 0.050 to 5.000 mL/min in 0.001 mL/min increments. - Programmable flow range: 0.000 and 0.010 to 10.000 mL/min in 0.001 mL/min increments. - Compressibility compensation: Automatic and continuous. - System delay volume: <400 µL, independent of back pressure, 1 mL/min. - Plunger seal flushing: Integrated, active, programmable. - Gradient profiles: Eleven (11) gradient curves (including linear, step (2 curves), concave (4 curves) and convex (4 curves)]. - Dry/Wet priming: Automatic, front panel controlled. - Flow rise: Time ( 0.01 to 30.00 min in 0.01 min increments) to achieve maximum flow rate. - Maximum operating pressure: 5000 psi (345 bar) at 0.010 to 3.000 mL/min; programmable upper and lower limits . - Composition range: 0.0 to 100.0% in 0.1% increments. - Composition accuracy: ±0.5% absolute, independent of back pressure (proportioning valve pair test [degassed methanol: methanol/propylparaben, 2 mL/min, 257 nm ]). - Composition precision: ?0.15% RSD or ?0.02 min SD, whichever is greater, based on retention time (Degassed 60% Methanol: 40% Water Dial-a-Mix, 1 mL/ min, six replicates, Phenon Mix, 257 nm). - Flow precision: ?0.075% RSD or ?0.02 min SD, whichever is greater, based on retention time (N = 6) or volumetric measurements (0.200 to 5,000 mL/min), isocratic premixing. - Flow Accuracy: ?1% or 10 µL/min, whichever is greater (0.200 to 5,000 mL/min), degassed methanol, at 600 psi back pressure. Sample management:. - Number of sample plates: Four plates in total:. – Microtiter plate – 96 or 384 wells. – Vial plate – 2.0 mL vials (48). – Tube plate – 0.5 mL microcentrifuge tube (48) or 1.5 mL microcentrifuge tube (24). – Open access plateau – 2.0 mL vials (24 or 48). - Sample temperature control: 4 to 40 °C, programmable in 1 °C increments. - Maximum sample capacity: 1536 in four 384-well plates. - Number of sample injections: 1 to 99 injections per sample. - Sample delivery precision: <0.3% RSD, full loop 50 µL (standard wash/rinse procedures, degassed 60% methanol: 40% water Dial-a-Mix, 1 mL/min, six replicates, paraben mix, 257 nm). - Linearity of sample volume: >0.999% correlation, 5 to 20 µL, partial fill in 50 µL loop, 3 µL pre- and post-sample air gap (standard wash/rinse procedures, degassed 60% methanol: 40% water Dial-a- Mix, 1 mL/min, six repetitions, paraben mix, 257 nm). - Needle Wash Solvent: Two: Wash (strong solvent) and Rinse (sample compatible) solvent A. - Sample Transfer: <0.01% or <2.5 nL (standard wash/rinse volumes), whichever is greater (blank injection, 25 µL, 60% methanol: 40% water, after six repetitions, 25 µL propylparaben, 1 g/L, 257 nm) Labprocure is responsible for this device.