Condition: Pre-owned
Number of solvents: Up to four, in combination of two, A1 or A2 and B1 or B2
Solvent conditioning: Integrated vacuum degassing, six lines with two allocated for the injector needlewash/purge solvents
Gradient formation: High pressure mixing, binary gradient
Gradient profiles: 11 gradient curves [including linear, step (2), concave (4), and convex (4)]
Primary check valves: Intelligent Intake Valves (i2 Valve)
Flow accuracy: ±1.0% of set flow rate at 0.500 mL/min, as per SystemsQT™
Flow precision: 0.075% RSD or 0.01 min SD, (0.2 to 2.0 mL/min), whichever is greater using premixed solvent
Composition ripple (baseline noise): <1.0 mAu (See ACQUITY UPLC I-Class System Specifications document for conditions)
Pump compositional precision: <0.15% RSD, or 0.02 min SD, whichever is greater (from 0.2 to 2.0 mL/min)
Pump compositional accuracy: ±0.5% absolute from 5% to 95%, 0.2 to 2.0 mL/min
Compressibility compensation: Automatic, no user intervention required
Priming: Wet priming runs at a flow rate of 4 mL/min
Pump seal wash: Equipped with a programmable active wash system to flush the rear of the high pressure seals and the plungers
Flow ramping: Automatic
Primary wetted materials: 316L stainless steel, UHMWPE blend, MP35N, titanium alloy, gold, sapphire, ruby, zirconia, Nitronic 60, DLC, fluoropolymer, PEEK and PEEK blend
Mixing options: Standard: 50 μL, Optional: 100 μL and 380 μL