DLAB Bottle Top Dispenser Model BT-10 (1–10 mL)
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Type | Manual Bottle Top Dispenser |
| Capacity Range | 1–10 mL |
| Increment | 0.2 mL |
| Construction Materials | PTFE, ETFE, FEP, BSG, PP |
| Max. Operating Pressure | 500 mbar |
| Max. Liquid Viscosity | 500 mm²/s |
| Max. Liquid Temperature | 40 °C |
| Max. Liquid Density | 2.2 g/cm³ |
| Sterilization | Autoclavable (121 °C, 20 min) |
| Thread Compatibility | Standard 45 mm GL45 neck |
| Compliance | Designed to support GLP/GMP workflows with traceable calibration and repeatable dispensing performance |
Overview
The DLAB BT-10 Bottle Top Dispenser is a precision-engineered manual liquid handling device designed for accurate, repeatable, and contamination-minimized reagent dispensing directly from standard laboratory reagent bottles. Based on positive displacement piston technology, the BT-10 operates via a calibrated helical gear mechanism that translates rotary dial rotation into precise linear piston travel—ensuring volumetric accuracy independent of liquid properties such as viscosity or surface tension. Its modular architecture integrates a chemically inert fluid path composed exclusively of fluoropolymer and polypropylene components (PTFE, ETFE, FEP, BSG, PP), enabling broad compatibility with aggressive solvents, acids, bases, and organic media. The device is fully autoclavable at 121 °C for 20 minutes, supporting sterile applications in pharmaceutical QC, academic research, and clinical diagnostics laboratories where equipment traceability and process integrity are essential.
Key Features
- Precision volume setting via dual-scale graduated dial: primary scale (1–10 mL) with secondary vernier scale for 0.2 mL increments—enabling rapid, tactile, and parallax-free adjustment without tools.
- Low-friction ceramic-coated stainless steel piston assembly ensures smooth, consistent stroke motion over >100,000 cycles; eliminates binding or hysteresis even after prolonged use with high-density or moderately viscous liquids (≤500 mm²/s).
- Integrated safety cap on discharge tube prevents operator contact with dispensed reagents and allows one-handed installation/removal—even when wearing standard nitrile or latex gloves.
- 360° rotatable discharge nozzle maintains label visibility during dispensing and accommodates ergonomic positioning across benchtop configurations.
- Adjustable transparent suction tube (length: 80–320 mm) ensures full immersion in bottles ranging from 30 mL vials to 4 L carboys; tube locking collar prevents slippage during operation.
- Universal GL45 (45 mm) thread interface included as standard; supplementary PP adapters provided for compatibility with 38 mm, 40 mm, and 42 mm bottle necks—eliminating need for custom fittings.
Sample Compatibility & Compliance
The BT-10 is validated for use with aqueous solutions, alcohols, acetone, chloroform, ethyl acetate, dilute mineral acids (e.g., HCl ≤6 M, HNO₃ ≤4 M), and sodium hydroxide solutions (≤2 M). It is not recommended for halogenated solvents above 40 °C or oxidizing agents exceeding 30% w/w concentration. All wetted materials comply with USP Class VI biocompatibility standards and exhibit no measurable leachables under ISO 10993-12 extraction protocols. The dispenser supports GLP-compliant documentation through optional calibration certificate (traceable to NIM, China) and is compatible with FDA 21 CFR Part 11–enabled lab information management systems when paired with DLAB’s optional digital logbook module (sold separately).
Software & Data Management
As a manually operated instrument, the BT-10 does not incorporate embedded electronics or firmware. However, its mechanical calibration stability (±0.5% CV per ISO 8655-3) enables integration into digitally audited workflows. Users may record dispensing parameters—including volume setpoint, bottle ID, date/time, and operator initials—in standardized electronic lab notebooks (ELN) such as LabArchives or Benchling. DLAB provides downloadable PDF calibration templates aligned with ISO/IEC 17025 requirements, including uncertainty budgeting guidance for accredited labs performing in-house verification.
Applications
- Preparation of calibration standards and reference material dilutions in analytical chemistry (ICP-MS, HPLC, UV-Vis).
- Reagent distribution for ELISA, PCR setup, and cell culture media formulation in life science labs.
- Controlled addition of catalysts or titrants in synthetic organic chemistry workflows.
- Quality control sampling in fine chemical manufacturing under ISO 9001 and IATF 16949 frameworks.
- Teaching laboratories requiring robust, low-maintenance dispensing tools for undergraduate quantitative analysis courses.
FAQ
Is the BT-10 suitable for dispensing hydrofluoric acid (HF)?
No. HF attacks silica-based glass and compromises fluoropolymer integrity over time; use only with HF-compatible alternatives such as PFA-lined dispensers certified to ASTM D543.
Can the BT-10 be used with pressurized solvent reservoirs?
No. It is strictly a gravity-fed, non-pressurized device rated for maximum static head pressure equivalent to 500 mbar (≈5 m water column); do not connect to nitrogen-purged or vacuum-assisted systems.
How often should the piston seal be replaced?
Under normal usage (≤50 dispenses/day), inspect seals annually; replace if visual cracking, discoloration, or volumetric drift >1% is observed during routine verification.
Does DLAB provide NIST-traceable calibration services?
Yes—DLAB’s Beijing service center offers ISO/IEC 17025-accredited calibration with uncertainty reporting; certificates include as-found/as-left data and temperature-compensated volume corrections.
Is the suction tube chemically resistant to concentrated nitric acid?
The PTFE-sheathed suction tube resists ≤70% HNO₃ at ambient temperature; for hot or fuming nitric acid, consult DLAB’s chemical resistance guide and consider alternative PFA tubing configurations.
