Tongtian TBP-2H02 Dual-Piston Medium-Pressure HPLC Pump

Overview

The Tongtian TBP-2H02 is a dual-piston, microprocessor-controlled medium-pressure constant-flow pump engineered for precision liquid delivery in analytical and preparative chromatographic applications. It operates on the principle of reciprocating positive displacement, where two synchronized sapphire-tipped pistons alternately draw and discharge fluid to achieve continuous, pulse-dampened flow. Designed for pressures up to 2.0 MPa (20 bar), the TBP-2H02 bridges the performance gap between low-pressure peristaltic systems and high-end analytical HPLC pumps—offering robustness, chemical resistance, and metrological reliability suitable for method development, process validation, and extended unattended operation in regulated environments.

Key Features

• Dual-piston architecture with sapphire balls and zirconia ceramic check valves ensures long service life, minimal wear, and consistent flow stability across the full operating range.
• Wetted path constructed from chemically inert materials—including sapphire, 316L stainless steel, and yttria-stabilized zirconia—provides broad solvent compatibility, including acetonitrile, THF, chloroform, DMSO, and dilute mineral acids/bases.
• Low-pressure pulsation (≤ 0.2 MPa) achieved via optimized cam profile, active pressure feedback, and integrated passive damping—critical for baseline stability in UV-Vis and conductivity detection.
• Real-time digital monitoring via backlit LCD display showing setpoint and actual pressure, flow rate, elapsed time, and system status.
• RS232 serial interface enables bidirectional communication with external PCs or PLCs; compatible with custom LabVIEW, Python, or MATLAB control scripts for integration into automated workflows.
• Onboard overpressure protection triggers immediate pump halt if preset limit is exceeded—preventing column damage and safeguarding downstream detectors.
• Integrated air-bleed valve and self-priming design facilitate rapid degassing and solvent exchange without disassembly.

Sample Compatibility & Compliance

The TBP-2H02 supports aqueous, organic, and mixed mobile phases commonly used in flash chromatography, size-exclusion chromatography (SEC), ion chromatography (IC), and preparative reversed-phase separations. Its 316L stainless steel and sapphire wetted components comply with ASTM F899 for corrosion-resistant alloys and meet ISO 8502-3 requirements for surface cleanliness verification prior to passivation. While not certified to FDA 21 CFR Part 11 out-of-the-box, the pump’s deterministic firmware architecture, audit-trail-capable software interface, and parameter-lock functionality enable qualification under GLP/GMP frameworks when deployed with validated host software and procedural controls.

Software & Data Management

The included PC control software provides ISO/IEC 17025-aligned operational logging: timestamped records of all setpoints, actual pressure/flow values, error codes, and runtime events are stored in CSV format with optional encryption. Flow calibration routines support multi-point gravimetric verification per USP guidelines. Data export is compatible with LIMS platforms via ODBC drivers. Firmware updates preserve configuration integrity and include version rollback capability—ensuring continuity during method transfer or regulatory revalidation.

Applications

• Method development for preparative purification of APIs, natural products, and synthetic intermediates (1–100 mg scale).
• Continuous solvent delivery in inline reaction monitoring systems coupled to FTIR or Raman spectrometers.
• Mobile phase supply for benchtop SEC systems analyzing polymer molecular weight distributions (Mw/Mn).
• Controlled infusion in electrochemical flow cells for catalyst screening and redox mechanism studies.
• Stable eluent delivery in environmental labs performing EPA Method 8081B (PCBs) and 8270D (semivolatiles) by GC-MS.
• Reagent dosing in automated parallel synthesis reactors requiring stoichiometric accuracy and solvent compatibility.

FAQ

What is the maximum recommended viscosity limit for this pump?
The TBP-2H02 is rated for mobile phases with dynamic viscosity up to 15 cP at 25 °C. For solvents exceeding this (e.g., glycerol/water mixtures), flow rate should be reduced below 50 mL/min and inlet line diameter increased to ≥ 0.5 mm ID to avoid cavitation.
Can the pump be operated in gradient mode with a single unit?
No—gradient formation requires two independently controllable pumps (e.g., Grad series). The TBP-2H02 is a single-channel constant-flow device; gradient capability must be implemented externally using proportioning valves or secondary pump modules.
Is the firmware compliant with IEC 62443 for industrial cybersecurity?
The embedded controller meets IEC 62443-4-1 software development lifecycle requirements. However, RS232 communication lacks built-in encryption; secure deployment mandates network-level segmentation and TLS-secured middleware when interfacing with enterprise IT infrastructure.
How often does the sapphire piston require recalibration?
Calibration drift is negligible under normal use (<0.1% per year). Gravimetric verification is recommended quarterly for GxP applications or after maintenance involving seal replacement or piston reseating.
Does the pump support analog input for external flow modulation?
No analog input is provided. Flow and pressure are digitally set via front-panel keys or RS232 commands. Analog modulation would require an external PID controller interfaced through relay outputs (available as optional accessory).