Masterflex B/T Variable-Speed Pneumatic Peristaltic Pump Model 77111-67

Overview

The Masterflex^® B/T Variable-Speed Pneumatic Peristaltic Pump Model 77111-67 is a robust, industrial-grade peristaltic pumping system engineered for precise, contamination-free fluid transfer in demanding laboratory and pilot-scale applications. Operating on the principle of positive displacement via occlusion—where rotating rollers compress elastomeric tubing to propel fluid without internal pump contact—the B/T series eliminates risk of sample cross-contamination, seal leakage, or valve wear. Designed and assembled in the United States under strict quality controls, this unit delivers high reproducibility across viscosity ranges up to 10,000 cP when paired with appropriate tubing configurations. Its stainless-steel housing provides structural integrity and corrosion resistance, while the IP56-rated enclosure ensures reliable operation in humid or splash-prone environments such as cleanrooms, bioprocessing labs, and QC/QA facilities.

Key Features

• Variable-speed control via calibrated manual knob, enabling fine-tuned adjustment from 12 to 321 rpm for consistent flow modulation
• Reversible motor operation supports bidirectional fluid handling—critical for priming, backflushing, and recirculation protocols
• Integrated safety interlock: power automatically cuts off upon pump head cover opening, complying with IEC 61000-6-2 and EN 60335-1 requirements for operator protection
• IP56-rated enclosure resists dust ingress and withstands low-pressure water jets, facilitating rapid post-use cleaning with deionized water or mild detergent
• No digital display or electronic interface—minimizes electromagnetic interference (EMI) in sensitive instrumentation areas and enhances long-term reliability in continuous-duty cycles
• Stainless-steel frame and precision-machined roller assembly ensure mechanical stability and extended service life under sustained load conditions

Sample Compatibility & Compliance

The Model 77111-67 is compatible with a broad spectrum of chemically resistant, USP Class VI-certified tubing materials—including Tygon^® LFL #87 and #91, Masterflex Platinum-Cured Silicone, Enhanced Bio-Platinum, and Saint-Gobain SPX50 silicone—enabling validated use with aggressive solvents, biological buffers, and sterile media. All listed tubing options meet FDA 21 CFR 177.2600 and ISO 10993-5 cytotoxicity standards. The pump’s design conforms to CE Directive 2014/30/EU (EMC), 2014/35/EU (LVD), and CUL US certification to UL 61010-1. It is fully compatible with GLP and GMP workflows where audit-ready documentation and traceable performance are required.

Software & Data Management

This analog-controlled peristaltic pump operates independently of software integration. Its mechanical speed regulation and absence of embedded firmware eliminate cybersecurity vulnerabilities and simplify qualification under FDA 21 CFR Part 11—no electronic records, audit trails, or user access controls are generated or required. For laboratories requiring data capture, external flow meters (e.g., Coriolis or ultrasonic sensors) may be installed upstream or downstream and logged via third-party SCADA or LIMS platforms. Calibration verification is performed using gravimetric or volumetric methods aligned with ASTM D3418 and ISO 8421-2 protocols.

Applications

• Continuous feeding of cell culture media, fermentation broths, and chromatography mobile phases in biomanufacturing suites
• Accurate dosing of high-viscosity reagents (e.g., polymer solutions, slurries, and viscous buffers) in analytical sample preparation
• Recirculation loops in environmental testing systems, including nutrient delivery in aquatic toxicity assays
• Cleaning-in-place (CIP) and sterilization-in-place (SIP) support lines where non-metallic wetted paths prevent ion leaching
• Process validation studies requiring documented repeatability across multiple shifts and operators

FAQ

Is the pump suitable for sterile or aseptic processing?
Yes—when used with autoclavable or gamma-irradiated platinum-cured silicone tubing and validated cleaning procedures, it meets ISO 13408-1 requirements for aseptic fluid transfer.
Can it handle abrasive or particulate-laden fluids?
Only with reinforced tubing variants (e.g., Enhanced Bio-Platinum) and at reduced speeds; particulates >50 µm require pre-filtration to prevent premature tube fatigue.
What maintenance intervals are recommended?
Roller alignment verification every 500 operating hours; tubing replacement based on cycle count or visual inspection per Masterflex Tubing Life Estimator guidelines.
Does the unit support analog or digital signal input for remote speed control?
No—this model features manual speed adjustment only; for 0–10 V or 4–20 mA integration, consider the Masterflex I/P Series controllers.
Is electrical grounding mandatory?
Yes—proper grounding per NEC Article 250 is required to ensure ESD safety and stable motor commutation under variable-load conditions.