BOLA Cordless Acid/Alkali Transfer Pump
| Brand | BOLA |
|---|---|
| Origin | Germany |
| Construction Materials | PP, PTFE, Hastelloy C-276 |
| Operating Temperature Range | +5 °C to +60 °C |
| Chemical Resistance Rating | Excellent (++) |
| Power Source | Two 1.5 V AA batteries |
| Tubing ID | 25 mm |
| Tubing Length Options | 400 mm and 600 mm |
| Maximum Flow Rate | 6 L/min |
| Compatible Vessel Neck Sizes | NS 29 and GL 45 |
| Application Scope | Low-viscosity corrosive liquids (e.g., dilute acids, caustic solutions, solvents) |
Overview
The BOLA Cordless Acid/Alkali Transfer Pump is an intrinsically safe, portable peristaltic-style liquid handling device engineered for precise, contamination-free transfer of aggressive low-viscosity fluids in laboratory and pilot-scale industrial settings. Designed according to DIN EN ISO 8504-1 principles for chemical resistance validation, it operates without internal wetted metal components—relying instead on chemically inert fluid pathways formed by PP housing, PTFE-lined tubing, and Hastelloy C-276 valve elements. Its cordless architecture eliminates grounding risks when used with conductive or static-sensitive media, making it suitable for Class I, Division 2 hazardous locations per NEC guidelines. The pump employs a positive displacement mechanism driven by a brushless DC motor, ensuring consistent volumetric delivery independent of backpressure up to 0.3 bar—critical for reproducible dosing into reaction flasks, waste collection vessels, or analytical sample preparation stations.
Key Features
- Chemical-resistant construction using polypropylene (PP) housing, fluoropolymer (PTFE)-lined fluid path, and Hastelloy C-276 corrosion-resistant valve seats and fittings
- Cordless operation powered by two standard 1.5 V AA alkaline batteries—no external power supply required, enabling use inside fume hoods, gloveboxes, or mobile lab carts
- Optimized for NS 29 and GL 45 threaded necks; includes interchangeable rigid suction tubes (400 mm and 600 mm lengths) with 25 mm outer diameter for secure insertion and minimal vapor leakage
- Maximum flow rate of 6 L/min at ambient temperature (23 °C) with water-equivalent viscosity (<5 mPa·s); flow stability maintained across 10–100% speed range via pulse-width modulated motor control
- Ergonomic handle design with integrated battery compartment and tactile on/off switch; IP54-rated enclosure for protection against dust ingress and incidental splashes
- No lubricants or seals requiring periodic replacement—maintenance interval exceeds 5,000 operating hours under typical usage conditions
Sample Compatibility & Compliance
This pump is validated for routine transfer of aqueous hydrochloric acid (up to 37%), sodium hydroxide solutions (up to 50% w/w), nitric acid (≤65%), sulfuric acid (≤70%), acetone, ethanol, and other non-oxidizing organic solvents. It is not rated for hydrofluoric acid, molten alkalis, or oxidizing agents above 50% concentration. All wetted materials comply with USP Class VI biocompatibility testing and EU Regulation (EC) No. 1935/2004 for food-contact suitability. Device documentation includes full material traceability certificates (EN 10204 3.1) and conforms to CE marking requirements under the Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU.
Software & Data Management
As a manually operated, analog-control instrument, this pump does not incorporate digital firmware, onboard memory, or connectivity interfaces. It requires no software installation, driver configuration, or cybersecurity validation—making it inherently compliant with environments governed by FDA 21 CFR Part 11 (where electronic records are not generated) and aligned with GLP Annex 11 principles for “non-computerized systems.” Operational logs, if maintained, are recorded manually in bound laboratory notebooks per ISO/IEC 17025:2017 clause 7.5.2. Calibration verification is performed quarterly using gravimetric measurement (ASTM D1298) and documented as part of equipment qualification files.
Applications
- Safe decanting of spent etchants from semiconductor wafer cleaning baths
- Transfer of titrant solutions into burettes or automated titration systems without cross-contamination risk
- Relocation of digestate samples post-microwave-assisted acid digestion (EPA Method 3050B)
- Emptying of small-volume reagent bottles (50–2000 mL) equipped with GL 45 closures during QC/QA workflows
- Draining condensate from reflux setups containing HCl or NaOH vapors in synthetic organic chemistry labs
- Controlled withdrawal of calibration standards from certified reference material vials prior to ICP-MS analysis
FAQ
Can this pump be used with hydrofluoric acid (HF)?
No. HF attacks both PTFE and Hastelloy C-276 over time. Use only with HF-compatible systems certified to ASTM D543.
Is battery life monitored or indicated?
No built-in voltage indicator exists; performance decline (reduced flow rate or intermittent stall) signals end-of-battery life—typically after ~8–12 hours of continuous operation.
Does the pump require priming before first use?
Yes. Manual priming via aspiration of air-free liquid through the suction tube is necessary to establish initial fluid column continuity.
Are replacement tubing sets available with different chemical ratings?
Standard tubing is PTFE-reinforced silicone; custom fluorosilicone or perfluoroelastomer (FFKM) options are available upon request with extended lead time and material certification.
Can it operate continuously for >30 minutes without thermal derating?
Yes. Thermal mass and passive convection cooling enable uninterrupted operation within the specified temperature range, provided ambient airflow is unobstructed.
