BRAND Titrette® 4760161 Digital Burette Dispenser
| Brand | BRAND® |
|---|---|
| Origin | Germany |
| Model | 4760161 |
| Measurement Range | 0.2–10 mL |
| Meter Accuracy | ±0.1% |
| Meter Resolution | 0.001 mL |
| Dispensing Accuracy | ≤±0.2% |
| Dispensing Resolution | 0.001 mL |
| Compliance | DIN EN ISO 385 (Class A volumetric accuracy) |
Overview
The BRAND Titrette® 4760161 Digital Burette Dispenser is a precision-engineered, manually operated, electronic bottle-top burette designed for high-accuracy volumetric dispensing in potentiometric titration workflows. Unlike motorized automatic titrators, the Titrette® operates without external power—leveraging a robust mechanical drive system coupled with an integrated optical encoder and microprocessor-based position sensing to deliver traceable, repeatable liquid delivery across 0.2–10 mL volumes. Its measurement principle relies on calibrated glass syringe displacement combined with real-time angular position tracking of the manual control knob, enabling direct volume readout independent of operator speed or technique. Engineered to meet DIN EN ISO 385 Class A tolerances for glass burettes, it serves as a portable, regulatory-compliant alternative to traditional glassware in GLP, GMP, and ISO/IEC 17025-accredited laboratories—particularly where infrastructure constraints (e.g., no AC power, limited bench space, or mobile field use) preclude conventional automated titrators.
Key Features
- Manual operation with electronic volume display: No batteries or external power required; internal energy harvesting via knob rotation powers the display and encoder.
- DIN EN ISO 385 Class A certified accuracy: ≤±0.2% relative error across full range; verified per standardized gravimetric calibration protocols.
- True bidirectional detection: Automatic mode switching between aspiration and dispensing based solely on rotational direction—no push buttons or mode toggles needed.
- High-resolution digital readout: 0.001 mL resolution with configurable decimal places (1–3 digits); auto-zeroing and drift compensation ensure long-term stability.
- Modular, serviceable architecture: All wetted parts—including PTFE-coated piston, borosilicate glass barrel, and silicone O-rings—are user-replaceable without tools; full disassembly enables thorough cleaning and validation.
- Embedded calibration utility (Easy Calibration): Supports two-point linear calibration using certified reference weights; stores calibration parameters non-volatilely.
Sample Compatibility & Compliance
The Titrette® 4760161 is chemically compatible with aqueous solutions, weak acids/bases, alcohols, and common organic solvents (e.g., acetone, methanol, chloroform) when used with standard PTFE/silicone seals. It is not recommended for strong oxidizers (e.g., concentrated HNO₃), hydrofluoric acid, or halogenated solvents above 50 °C. As a Class A volumetric device, it complies with DIN EN ISO 385 for burette performance and supports audit-ready documentation per ISO/IEC 17025 clause 6.4.2 (equipment verification). While not an FDA 21 CFR Part 11–compliant instrument out-of-the-box, its optional RS-232 interface (with appropriate terminal software) enables raw data export for inclusion in validated LIMS or ELN systems under controlled procedural oversight.
Software & Data Management
The unit features embedded firmware supporting date/time stamping, automatic shutdown after 5 minutes of inactivity, and programmable display settings (e.g., backlight timeout, decimal precision). Optional RS-232 output (via accessory cable) provides ASCII-formatted volume data at 9600 baud—compatible with generic serial terminals, LabVIEW VIs, or custom Python/Excel scripts for batch logging. No proprietary software installation is required; exported data includes timestamp, volume value, and direction flag (aspirate/dispense). For regulated environments, users may integrate output into existing 21 CFR Part 11–compliant platforms via third-party middleware that enforces electronic signature, audit trail, and data integrity controls.
Applications
- Standardization of titrants (e.g., NaOH, HCl, EDTA) in QC labs following ASTM E200 or ISO 8655-5.
- Acid-base, redox, and complexometric titrations in food & beverage testing (e.g., titratable acidity in wine, dairy SH units).
- Field-deployable pH-metric endpoint detection where portability and battery independence are critical.
- Calibration of glass pipettes and volumetric flasks using gravimetric comparison methods.
- Teaching laboratories requiring demonstrable traceability, repeatability, and hands-on understanding of volumetric principles without automation complexity.
FAQ
Does the Titrette® 4760161 require batteries or external power?
No—it generates operating power mechanically through knob rotation and requires no batteries, USB, or AC input.
Can it be used for ISO 17025-compliant calibration?
Yes, when calibrated gravimetrically per ISO 8655-5 and documented with uncertainty budgets, it satisfies metrological requirements for Class A volumetric dispensers.
What is the maximum operating temperature and pressure?
The glass barrel is rated to 50 °C; maximum positive pressure during dispensing is 0.5 bar (gauge); negative pressure during aspiration is limited by atmospheric conditions.
Is the RS-232 interface included or optional?
Optional—ordered separately as accessory kit BR-4760161-RS232; includes cable and terminal configuration guide.
How often should recalibration be performed?
Annually under routine use; more frequently if subjected to mechanical shock, thermal cycling, or aggressive solvents—per laboratory quality procedure.
