Waters 2555 Quaternary Gradient Module

Product information "Waters 2555 Quaternary Gradient Module"
Number of solventsUp to four: A, B,C, D
Solvent conditioningSparging: one channel per solvent
Flow rate range4.00 to 300.00 mL/min, in 0.01 mL/min increments
Compressibility compensationAutomatic and continuous
Delay volume< 13mL
Plunger seal washIntegral, active, programmable
Gradient profiles11 gradient curves, including linear, step [2], concave [4], and convex [4]
PrimingSelf prime from solvent container on floor with dry lines
Maximum operating pressure3000 psi up to 200 mL/min; Roll off to 2500 psi at 300 mL/min
Composition accuracy± 3% absolute (full scale) from 5% to 95%; and from
4 to 260 mL/min (methanol or water step gradients) at 600 psi
Composition precisionRetention time variation < 0.15 min SD,
(uracil/caffeine; 5, 20, 50, 150, 300 mL/min; 70:30 water/methanol dial-a-mix)
Primary wetted materials316 stainless steel, UHMWPE blend, sapphire, ruby, Tefzel (ETFE),
Teflon (FEP, PTFE, PFA), Valcon H, Zirconia ceramic, Nitronic 60, and PEEK
Flow accuracy± 1.0% of required flow (methanol or water at 600 psi) at 4 to 300 mL/min
Leak testFully automatic diagnostic