Solvent condition. Vacuum degassing, two (2) operating modes, four (4) chambers, < 500 µL internal volume per chamber. Programmable flow range. 0.000 and 0.010 to 10.000 mL/min in 0.001 mL/min increments. Effective system delay volume. < 650 µL, independent of back pressure at 1 mL/min. Piston seal washer system. Integral, active, programmable. Gradient profiles. Eleven (11) gradient curves (including linear, step [2], concave [4] and convex [4]). Maximum operating pressure. 5000 psi (345 bar) (0.010 - 3.000 mL/min) Programmable upper and lower limits. Pressure ripple. <2.5% (at 1 mL/min, degassed methanol, at 1700 psi back pressure). 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, 254 nm]). Composition precision. 0.15% RSD or 0.02 min SD, whichever is greater based on retention time. (Degassed methanol:water, 60:40 Dial-a-Mix, 1 mL/min, 6 replicates, Phenon mix, 254 nm). Flow precision. 0.075% RSD or 0.02 min SD, 6 replicates, based on retention time or volumetric measurements (0.200 - 5,000 mL/min), isocratic premix. Flow accuracy. ± 1% or 10 µL/min, whichever is greater (0.200 - 5,000 mL/min), (Degassed methanol, at 600 psi back pressure). Sample management. Number of sample vials. 120 vials, organized in 5 carousels with 24 vials each. Number of sample injections. 1 to 99 injections per sample vial. Accuracy of sample delivery. Typically <0.5% RSD, 5 - 80 µL (Degassed methanol: water, 60:40 Dial-a-Mix, 1 mL/min, 6 repetitions, Phenon mix, 254 nm). Sample transfer. <0.1%. Injection accuracy. ± 1µL (± 2%) (50 µL, N=6), sample: 100% degassed water, analysis solvent: 100% degassed methanol. Temperature control of the sample. 4 to 40°C, programmable in 1°C increments. Advanced Operations. Stat runs, automatic encores, automatic standards. Injection volume range. 0.1 to 100 µL, standard; 0.1 to 2000 µL, with optional sample loop. Injector linearity. > 0.999 coefficient of variation (1 to 100 µL). Waters 2410 Refractometer (RID). Conditions. Specifications RI area. 1.00 to 1.75 RIU. Measuring range. 5 × 10^(-3) RIU maximum FS (SENS = 1, SF = 1). 5 × 10^(-8) RIU minimum FS (SENS = 1024, SF = 100). flow rate. 0.03 to 10 mL/min. Noise (after an hour of warm-up). ? 2.0 × 10^(-8) RIU, (TC = 1, SF = 80, SENS = 64, THF at 24 °C with restrictor coil). Drift. 2.5 × 10^(-7) RIU/hour (static with THF) TC = 1, SF = 20, SENS = 32. Sensitivity settings. 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024. Time constant filter settings. 0.2, 1, 3, 10 seconds. Analogue outputs. -2.0V to +2.0V. Temperature control. Internal oven: 30 to 50°C (86 to 122°F). External column heaters. • Environment up to 150°C (302°F), steel. • Environment up to 80°C (176°F), plastic. light source. Light emitting diode (LED). Flow cell. Fused quartz glass. Cell volume. 10 µL. pressure limit. 100psi. Fluid path materials. 316 stainless steel, Dynasil®, Suprasil II®, PTFE, Kalrez®, quartz. This reconditioned Waters Alliance 2695 HPLC system comes with the Waters 2410 refractometer. They are in excellent condition. We could sell them separately upon request. We have particular expertise in the field of analytical equipment. Labprocure is responsible for this device.