Masterflex Digi-Staltic Peristaltic Pump System Model 77340-00

Overview

The Masterflex Digi-Staltic Peristaltic Pump System Model 77340-00 is a precision-engineered, microprocessor-controlled peristaltic pumping platform designed for repeatable, contamination-free fluid handling in regulated laboratory and industrial environments. Based on the principle of positive displacement via occlusion—where rollers compress flexible tubing against a curved housing to generate unidirectional flow—the system eliminates fluid contact with mechanical components, ensuring full isolation of the process stream. This architecture meets critical requirements for aseptic transfer, reagent dispensing, continuous dilution, and multi-step fluid sequencing in pharmaceutical development, bioprocessing, analytical sample preparation, and food & beverage quality control. The modular architecture separates controller and pump modules, enabling scalable deployment from single-channel benchtop operation to synchronized multi-pump configurations under centralized program logic.

Key Features

• Dual-channel Easy-Load II pump heads (77200-60) pre-installed—enabling pulse-dampening via Y-connector configuration for stable, low-pulsation flow profiles essential for sensitive detection systems (e.g., HPLC autosamplers, spectrophotometric assays).
• High-resolution speed control (6–600 rpm) with ±0.3% speed accuracy and ±0.5% volumetric repeatability across the full flow range (0.72–5800 mL/min), validated per ASTM D3418 and ISO 8503-2 calibration protocols.
• 30-user-programmable methods stored onboard; each method defines independent parameters per pump channel including speed, run time, start/stop delays, tubing ID selection, volume dispense targets, and bidirectional anti-drip routines (reverse rotation up to 10 revolutions before stop).
• PC-based software interface supporting RS-232/USB communication for method upload/download, real-time operational monitoring, audit trail logging, and synchronization with external devices—including Ohaus, Sartorius, and AND balances via dedicated interface cables (77310-06 / 77310-07).
• Configurable ramp-up/ramp-down profiles (0–9.9 s acceleration/deceleration), programmable cycle counts (1–999), interval timing (0–999.9 s between dispenses), and volumetric targeting from 0.5 mL to 8000 L with selectable units (mL, L, g, kg when balance-integrated).
• IP22-rated enclosure for protection against vertically falling drips and solid objects >12.5 mm; certified to CE (2014/30/EU EMC Directive, 2014/35/EU LVD), cULus (UL 61010-1), and ISO 9001:2000 quality management standards.

Sample Compatibility & Compliance

The Digi-Staltic system supports a comprehensive range of chemically resistant tubing materials—including platinum-cured silicone (Masterflex Bio-Platinum, Saint-Gobain Tygon S-50-HL/S-54-HL), fluoropolymer-reinforced elastomers (Masterflex Chem-Durance, Saint-Gobain Norprene-A-60-F), and ultra-pure polymer formulations (Saint-Gobain Tygon 2475, Pharmapure). Tubing compatibility spans inner diameters from 0.8 mm (#13) to 9.6 mm (#36), with wall thickness options (1.6 mm standard, 2.4 mm thick-wall variants) enabling optimization for viscosity (up to 50,000 cP), pressure head (<45 psi), and shear-sensitive biologics. All tubing selections comply with USP Class VI, FDA 21 CFR Part 11 (when used with audit-trail-enabled software), and EU Food Contact Regulation (EC) No. 1935/2004. System validation documentation supports IQ/OQ/PQ execution in GMP/GLP environments.

Software & Data Management

The included Windows-compatible software provides full remote control, method library management, and data export (CSV, XML). Each executed program generates timestamped log files containing pump status, speed history, volume delivered, error flags, and user ID—structured for traceability in FDA 21 CFR Part 11-compliant workflows. Software supports electronic signatures, role-based access control, and configurable audit trail retention. Integration with LIMS or ELN platforms is achievable via COM port scripting or OPC UA adapters. Firmware updates are delivered through secure authenticated channels, maintaining integrity throughout the device lifecycle.

Applications

• Automated buffer exchange and gradient formation in chromatography system priming and column equilibration.
• Sequential reagent addition in ELISA, PCR setup, and cell culture media preparation under laminar flow hoods.
• Continuous feed of viscous fermentation broths or cell lysates to inline sensors (pH, DO, turbidity) without cross-contamination.
• Accurate volumetric dispensing into multiwell plates for HTS assay development, with inter-well CV <1.2% at 100 µL.
• Integration into automated dissolution testers (USP Apparatus II) for sink condition maintenance via timed diluent addition.
• Food safety testing workflows requiring allergen-free transfer paths—validated with gluten-free and dairy-free tubing sets.

FAQ

Can the controller operate multiple pumps simultaneously?
Yes—the Model 77340-00 controller supports up to four independent pump modules, each with fully decoupled speed, timing, and volume parameters.

Is tubing calibration required for accurate flow delivery?
Yes. The controller uses tubing inner diameter as a primary input for RPM-to-flow conversion; users must select the correct tubing size from the built-in library or enter custom dimensions.

Does the system support GLP-compliant electronic records?
When deployed with the validated software package and configured with user authentication and audit trail settings, it fulfills ALCOA+ data integrity principles per WHO TRS 996 Annex 11.

What is the maximum backpressure the pump can handle?
Maximum continuous backpressure is 45 psi (3.1 bar) at 600 rpm with #18 tubing; performance degrades linearly above this threshold and must be verified experimentally for each tubing–fluid combination.

Can I integrate this pump with third-party lab automation hardware?
Yes—via TTL-level digital I/O (start/stop/pause signals), analog 0–10 V speed control input, or RS-232 command protocol compliant with SCPI subset.