High-performance liquid chromatography (HPLC) system, K2025

HPLC system K2025 with the K2025 P1/P2/P4 pump, the K2025AS autosampler and Wookinglab software.

• Reliable design and high-quality components; passed a reliability test performed by an authority, for long-term operation in optimum condition
• Precision and accuracy of results ensured by the pumping and sampling technology, a high-sensitivity detector and data processing software
• Wookinglab software: convenient, efficient operation; fully complies with FDA 21 CFR Part 11 (database mode, data traceability)
• K2025 P1/P2/P4 pump: reciprocating tandem plunger pump with a pressure dynamic suppression algorithm for precise gradients and retention times; retention time repeatability <0.2%
• Cam machined in one piece from high-hardness alloy steel with high-frequency heat treatment: wear-resistant surface (hardness above 55 HRC) and longer service life
• High-power custom motor, Japanese NSK bearings and an independent air duct
• Piston drive made of self-lubricating, wear-resistant materials imported from Germany; rifling on the inner wall prevents the piston from locking accidentally
• Patented suspended floating plunger (patent No. ZL 2020 2 1896102.3) adapts automatically to working conditions, is easy to dismantle and prevents eccentric wear of the seal ring; a special seal design and automatic plunger cleaning make the pump seal more reliable
• Online automatic rinsing: while the pump runs, the rinsing pump switches on automatically at intervals, preventing buffer salt crystallisation and microbial growth and extending the life of the plunger and plunger seal
• Purge function on both the workstation and the instrument panel
• Intelligent solvent replacement and evacuation: the 4-channel solvent selection valve switches automatically according to the method and the mobile-phase sequence
• Quaternary pump: independent 4-channel gradient proportioning valve with intelligent monitoring and diagnosis; each channel is monitored in real time and can be replaced separately, reducing maintenance costs
• K2025AS autosampler: all-in-one constant-pressure sampling needle (patent No. ZL 2020 2 1159205.1) and ultra-precision injection pump for accurate injection volume and excellent injection linearity
• Low carryover: the needle is polished on the outside and passivated on the inside; washing the outer and inner surfaces lowers carryover further
• Patented preloaded injection mode (patent No. ZL 2020 2 2977790.2): injection time as short as 5 s