Hirschmann Ceramus HF-Resistant Bottle Top Dispenser

Overview

The Hirschmann Ceramus HF-Resistant Bottle Top Dispenser is an engineered precision liquid handling instrument designed for safe, repeatable, and calibration-free dispensing of highly aggressive reagents—including hydrofluoric acid (HF)—in demanding laboratory and production environments. Unlike conventional plastic or stainless-steel dispensers, the Ceramus utilizes a monolithic high-purity ceramic piston and chemically inert PTFE/FFKM sealing system, enabling full compatibility with HF, concentrated mineral acids, organic solvents, and viscous media up to 500 mPa·s. Its operating principle relies on a positive-displacement, air-free piston mechanism with stepwise volume adjustment via a calibrated digital volume ring—eliminating reliance on spring-loaded valves or air cushions that degrade accuracy under thermal or chemical stress. This architecture ensures long-term volumetric stability without periodic recalibration, meeting the metrological requirements of ISO 8655-3 for manual piston-operated dispensers.

Key Features

• Ceramic Piston Technology: Machined from 99.8% pure alumina ceramic (Al₂O₃), offering exceptional resistance to HF etching, thermal shock (−40 °C to +150 °C), and mechanical wear—preserving factory-set accuracy over >50,000 dispense cycles.
• Digital Volume Ring: One-turn adjustment covering the full 2–10 mL range in 0.25 mL increments; engraved, parallax-free scale visible at eye level for operator consistency and reduced reading error.
• Autoclavable Construction: Fully assembled unit withstands 121 °C / 20 min steam sterilization per DIN EN 285; compatible with optional 0.2 µm hydrophobic PTFE membrane filters for biosafety containment (BSL-2/3 compliance).
• Sealed Valve System: Integrated upward-facing sealing valve allows immediate bottle closure post-use—functioning as a chemical-resistant cap to prevent evaporation, contamination, or vapor exposure during storage.
• Ergonomic & Waste-Free Design: No disposable tips or consumables required; low-surface-energy wetted path minimizes residue retention and cross-contamination; compact footprint (≤120 mm height) enables use inside laminar flow hoods and biosafety cabinets.

Sample Compatibility & Compliance

The Ceramus HF dispenser is validated for direct contact with hydrofluoric acid (up to 48 wt%), aqua regia, fuming nitric acid, chlorosulfonic acid, and fluorinated solvents (e.g., HFIP, TFEE). Its wetted materials—alumina ceramic, FFKM (perfluoroelastomer), and PTFE—are listed in FDA CFR 21 Part 177 and EU Regulation (EC) No. 1935/2004 for food-contact safety. Each unit undergoes 100% functional testing per ISO 8655-6 Annex B, with individual serial-numbered calibration certificates traceable to PTB (Physikalisch-Technische Bundesanstalt) standards. Documentation supports GLP audit trails, GMP process validation (ICH Q7), and ISO 9001:2015 quality management system integration—including full inclusion in DIN EN ISO 9000-compliant documentation packages.

Software & Data Management

As a manually operated, non-electronic device, the Ceramus HF requires no firmware, drivers, or software interface. However, its metrological traceability and batch-specific QC reports are structured to integrate seamlessly into electronic lab notebook (ELN) systems and LIMS workflows. Certificate data—including serial number, test date, measured accuracy (A), CV%, and PTB reference standard ID—is provided in PDF and CSV formats compliant with 21 CFR Part 11 requirements for electronic records (when paired with validated document management systems). Audit logs for calibration certificate issuance and revision history are maintained by Hirschmann’s quality department for ≥10 years.

Applications

• Precision dispensing of HF-based etchants in semiconductor wafer cleaning and MEMS fabrication processes.
• Controlled addition of corrosive catalysts (e.g., AlCl₃ in chlorinated solvents) in fine chemical synthesis under inert atmosphere.
• Reagent delivery in nuclear fuel cycle labs handling uranyl fluoride solutions.
• High-reproducibility volumetric transfer in accredited environmental testing labs (EPA Method 300.0, ISO 11885) where HF digestion is required for silicate matrix dissolution.
• Quality control workflows in pharmaceutical excipient manufacturing involving acidic stabilizers or chelating agents.

FAQ

Is the Ceramus HF dispenser suitable for hydrofluoric acid concentrations above 40%?
Yes—validated for continuous use with aqueous HF up to 48 wt% at ambient temperature; extended exposure to >50 °C requires consultation with Hirschmann technical support.
Does it require recalibration during routine use?
No—ISO 8655-3 classifies it as a “calibration-free” dispenser due to its monolithic ceramic piston and zero-drift mechanical design; only initial verification per ISO 8655-6 is mandated.
Can it be used with viscous liquids such as glycerol or silicone oil?
Yes—tested with liquids up to 500 mPa·s viscosity; dispensing speed should be reduced to ≤1 mL/s to maintain accuracy and avoid cavitation.
How is sterility assurance documented for BSL-3 applications?
Each unit ships with a sterilization validation report confirming 121 °C / 20 min cycle efficacy per DIN EN 554, including biological indicator (Geobacillus stearothermophilus) log reduction data.
What maintenance is required between autoclave cycles?
Rinsing with deionized water followed by air-drying is sufficient; no lubrication or part replacement is needed within the specified service life of 5 years or 50,000 cycles.