Waters Alliance 2690/2695 HPLC System with 2410 ELSD

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)

Number of Sample Vials

120 vials, configured in 5 carousels of 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)