Solvent Management Specifications - Waters Alliance e2695 Operator's Manual

C.4

Solvent management specifications

The following table lists the solvent management specifications for the Alliance e2695 Separations
Module.
Table C–4: Solvent management system specifications – e2695 XE configuration
Attribute
Number of solvents
Solvent conditioning
Programmable flow rate range
Typical operating flow rate range 0.050 to 5.000 mL/min in 0.001 mL/min increments
Compressibility compensation
Effective system delay volume
Plunger seal wash
Gradient profiles
Dry prime/wet prime
Flow ramping
Maximum operating pressure
Pressure ripple
Composition range
Composition accuracy
Composition precision
Flow precision
Flow accuracy
Specification
One to four
Vacuum degas, four chambers
≈ < 500 uL internal volume per chamber
0.000 and 0.010 to 10.000 mL/min
in 0.001 mL/min increments
Automatic and continuous
< 650 µL, independent of back-pressure at 1 mL/min
Integral, active, programmable
11 gradient curves, including:
• Linear
• Step (2 curves)
• Concave (4 curves)
• Convex (4 curves)
Automatic, front panel control
Time (0.01 to 30.00 min in 0.01 min increments) to reach
maximum flow rate
345 bar (5000 psi) (0.010 to 3.000 mL/min)
Programmable upper and lower limits
Pressure fall-off at > 3.000 mL/min
≤ 2.5% (1 mL/min, degassed methanol, at 1700 psi
back-pressure)
0.0 - 100.0 in 0.1% increments
± 0.5% absolute, independent of back-pressure
(Proportioning valve pair test [degassed methanol (or
methanol/propylparaben), 2 mL/min, 254 nm])
≤ 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,
six replicates, phenone mix, 254 nm)
≤ 0.075% RSD or ≤ 0.02 min SD, based on retention time
(N = 6) or volumetric measures (0.200 to 5.000 mL/min),
isocratic premix
±1% or 10 µL/min, whichever is greater, (0.200 to 5.000 mL/
min), degassed methanol, at 600 psi back-pressure
February 27, 2018, 715003794 Rev. C
Page 220