Sanotac BM100 Diaphragm Metering Pump with Fully Fluorinated Fluid Path

Overview

The Sanotac BM100 Diaphragm Metering Pump is a precision-engineered, metal-free positive displacement pump designed for the safe, accurate, and contamination-free delivery of highly aggressive, high-purity, and ultra-corrosive process fluids. Operating on a mechanically actuated diaphragm principle—where linear motion from a precision lead screw drives a flexible fluoropolymer diaphragm—the BM100 eliminates dynamic seals, rotating shafts, and elastomeric gaskets. This architecture ensures zero leakage, zero gas ingress, and no particle generation from wear or friction, making it uniquely suited for applications where chemical integrity, purity, and operational safety are non-negotiable. Unlike conventional plunger or peristaltic pumps, the BM100’s fully fluorinated fluid path (comprising only PTFE, PFA, and chemically inert ceramic components) maintains structural stability and dimensional consistency across prolonged exposure to chlorosulfonic acid, oleum (fuming sulfuric acid), sulfur trioxide (SO₃), concentrated phosphoric acid (≥85%), fuming nitric acid, anhydrous hydrogen fluoride, bromine, liquid chlorine, and organometallic reagents such as butyllithium and Grignard compounds.

Key Features

• Fully fluorinated wetted path: All fluid-contact surfaces consist exclusively of PTFE, PFA, and specialty ceramic—no metals, no elastomers, no lubricants.
• Zero-seal design: The diaphragm serves as both the pumping element and the sole barrier between drive mechanism and process fluid—eliminating shaft seals, O-rings, and packing glands.
• Sub-micron particulate control: Absence of sliding interfaces or seal wear ensures compliance with ISO Class 4 (≤29 particles/m³ ≥0.1 µm) cleanroom-grade fluid handling requirements.
• High-precision volumetric delivery: Lead-screw actuation enables repeatable flow control with 0.1 mL/min resolution and ±1% volumetric accuracy across the full 1.0–100.0 mL/min range.
• Gas-tolerant operation: Capable of metering liquids containing dissolved or entrained gases without cavitation, phase separation, or flow instability—critical for battery electrolyte formulation and semiconductor precursor delivery.
• Multi-protocol digital interface: Standard USB, RS232, and RS485 ports support Modbus RTU protocol for seamless integration into PLC-controlled batch systems, GMP-compliant manufacturing execution systems (MES), and automated reaction platforms.

Sample Compatibility & Compliance

The BM100 is validated for continuous duty with Class 1A and 1B corrosives per NFPA 30 and OSHA HAZCOM guidelines. Its materials meet ASTM D1711 (fluoropolymer aging resistance), ASTM F519 (stress corrosion cracking resistance), and USP for pharmaceutical-grade polymer extractables. The absence of metallic ions and organic leachables ensures compatibility with SEMI F57 (high-purity electronic chemicals) and IEC 61215 (photovoltaic material purity) specifications. For regulated environments, firmware supports audit-trail logging and user-access controls aligned with FDA 21 CFR Part 11 Annex 11 principles—enabling full traceability of flow setpoints, run duration, and error events.

Software & Data Management

Sanotac PumpControl™ Suite (v3.2+) provides native Windows/Linux drivers and Python SDK for programmatic control. Real-time flow calibration curves, pressure-compensated flow correction tables, and time-stamped event logs (start/stop, stall detection, overpressure alerts) are exportable in CSV and HDF5 formats. All communication sessions are timestamped and digitally signed to satisfy GLP/GMP data integrity requirements. Remote configuration via Modbus TCP gateway allows centralized fleet management across multi-pump synthesis reactors or inline blending stations.

Applications

• Semiconductor front-end processes: Metering of photoresist developers, etchants (e.g., HF/HNO₃ mixtures), and EUV resist solvents under Class 1 cleanroom conditions.
• Lithium-ion battery manufacturing: Precise dosing of LiPF₆-based electrolytes, cathode slurry additives, and moisture-sensitive fluoroethylene carbonate (FEC) formulations.
• Fine chemical synthesis: Controlled addition of pyrophoric reagents (e.g., n-BuLi), halogenating agents (ClSO₃H, SO₃), and superacid catalysts in continuous-flow reactors.
• Pharmaceutical API synthesis: Delivery of concentrated phosphoric acid catalysts, sulfonation reagents, and anhydrous reaction media compliant with ICH Q5C and Q7 guidelines.
• Analytical sample introduction: Stable, pulseless flow for ICP-MS, IC, and HPLC mobile phase delivery where metal contamination must remain below sub-ppt levels.

FAQ

What is the maximum allowable inlet pressure for the BM100 when handling fuming sulfuric acid?

The BM100 is designed for suction-lift operation; inlet pressure must remain at or below atmospheric (0 psig). Positive inlet pressure exceeding 0.1 MPa requires external pressure regulation and is not recommended without engineering review.
Can the BM100 be used in explosion-proof (ATEX) Zone 1 environments?

No—the standard BM100 is rated for general-purpose industrial use (IP54 enclosure). ATEX-certified variants with intrinsically safe motor drivers and purged housings are available under custom order (model suffix “-EX”).
Does the pump require periodic recalibration per ISO/IEC 17025?

Yes—Sanotac recommends annual flow verification using gravimetric or certified syringe-pump reference standards traceable to NIST SRM 2809. Calibration certificates include uncertainty budgets per GUM (JCGM 100:2008).
How does the BM100 handle viscosity changes during temperature cycling?

Flow rate is volumetrically controlled; however, for fluids with >15% viscosity drift over operating temperature (10–40°C), optional integrated PT100 temperature feedback can trigger real-time flow compensation via PumpControl™.
Is PFA tubing included with the BM100, or must it be sourced separately?

PTFE/PFA-compatible inlet and outlet tubing kits (including Swagelok® PF4 series ferrules and PFA-lined stainless steel compression fittings) are supplied standard. Custom-length PFA capillary assemblies (ID 0.5–1.6 mm) are available upon request.