| Solvent Conditioning | Vacuum degas,two (2) operating modes, four (4) chambers, < 500 µL internal volume per chamber |
| Programmable Flow Rate 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 backpressure @ 1 mL/min. |
| Plunger Seal Wash | 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% (1 mL/min., degassed methanol, at 1700 psi backpressure) |
| Composition Range | 0.0 to 100.0%, in 0.1% increments |
| Composition Accuracy | ±0.5% absolute, independent of backpressure (Proportioning Valve PairTest, [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,phenone mix, 254 nm) |
| Flow Precision | 0.075%RSDor 0.02 min. SD, 6 replicates, based on retention time or volumetricmeasures (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 backpressure) |
Sample Management
| Number of Sample Vials | 120 vials, configured in 5 carouselsof 24 vials each |
| Number of Sample Injections | 1 to 99 injections per sample vial |
| Sample Delivery Precision | Typically < 0.5% RSD, 5 – 80 µL (Degassed methanol: water, 60:40 dial-a-mix, 1 mL/min., 6 replicates, phenone mix, 254 nm) |
| Sample Carryover | < 0.1% |
| Injection Accuracy | ± 1µL (± 2%) (50 µL, N=6), Sample: 100% degassed water, Analytical solvent: 100% degassed methanol |
| Sample Temperature Control | 4 to 40°C, programmable in 1°C increments |
| Advanced Operations | Stat runs, Auto additions, Auto 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 deviation (1 to 100 µL) |
Waters 996 PDA detector
| Item | Specification |
| Dimensions | 11.5 x 22 inches (29×56 cm) |
| Weight | 31 lbs (14.3 kg) |
| Wavelength range | 190 to 800 nm |
| Wavelength accuracy | +1 nm |
| Linearity range | 5% at 2.0 AU, propylparaben, at 258 |
| Spectral resolution | 1.2 nm |
| Baseline noise | +1.5 x 10-5 AU peak-to-peak, dry, at 254 nm |
| Drift | 1 x 10-3 AU/hour at 254 nm (after warm-up) |
| Flow cells Standard Semi-preparative microbore inert | Pathlength (mm): Tubing (I.D.) 10 0.009 in 3 0.040 in 3 0.005 in 10 0.010 in |
This refurbished Waters Alliance 2690/2695 HPLC system comes with Waters 996 PDA. They are in great condition and have been tested at SpectraLab Scientific.
Can be sold separately upon request.
A 90 day warranty is included. Multiple available
We are seasoned professionals in this area and we would be extremely happy to have you speak with one of our experts here at SpectraLab.
Thanks for looking and we look forward to hearing from you!
