DLAB DispensMate-Pro Manual Bottle Top Dispenser
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Model | DispensMate-Pro |
| Type | Manual Bottle Top Dispenser |
| Volume Range | 0.5–5 mL |
| Graduation Interval | 0.1 mL |
| Systematic Error | ±25 µL or ±0.5% |
| Random Error | ±10 µL or ±0.2% |
| Max. Operating Pressure | 500 mbar |
| Max. Kinematic Viscosity Tolerance | 500 mm²/s |
| Max. Liquid Temperature | 40 °C |
| Max. Liquid Density | 2.2 g/cm³ |
| Construction Materials | PTFE, FEP, Hastelloy®, PP |
| Included Adapters | S40, GL25, GL28, GL32, GL38 |
Overview
The DLAB DispensMate-Pro Manual Bottle Top Dispenser is an ergonomically engineered liquid handling instrument designed for precise, repeatable, and contamination-controlled dispensing of reagents directly from standard laboratory bottles. Based on positive displacement piston mechanics, the device operates without reliance on air displacement or syringe-based aspiration—eliminating bubble formation, vapor lock, and cross-contamination risks common in low-viscosity or volatile solvent handling. Its robust mechanical architecture ensures consistent volumetric delivery across repeated cycles, making it suitable for routine QC testing, analytical sample preparation, and teaching laboratories where traceability, operator safety, and procedural reproducibility are essential. The dispenser is calibrated and verified per ISO 8655-3 (Piston-operated Volumetric Apparatus – Part 3: Piston Burettes), supporting compliance with GLP and ISO/IEC 17025 documentation requirements when used within validated workflows.
Key Features
- Manual operation with dual-stage plunger mechanism enabling controlled, stepwise dispensing and fine-tuned volume adjustment
- High-chemical-resistance fluid path constructed entirely from inert materials: PTFE seals, FEP-coated piston, Hastelloy® spring components, and polypropylene housing—compatible with organic solvents, acids (e.g., HCl, HNO₃ up to 30%), bases, and aqueous buffers
- Integrated reflux valve allows immediate retraction of excess dispensed liquid back into the source bottle, minimizing waste and reducing exposure risk during titration-style or iterative dosing protocols
- Retractable inlet tube accommodates variable bottle neck depths and enables full evacuation of residual liquid post-use, supporting cleaning validation
- Five universal bottle adapters included (S40, GL25, GL28, GL32, GL38) ensure compatibility with most international standard reagent containers—including DIN, ASTM, and ISO-specified threaded necks
- Autoclavable components (up to 121 °C, 20 min, saturated steam) support sterile applications in cell culture or microbiology labs without compromising dimensional stability or seal integrity
Sample Compatibility & Compliance
The DispensMate-Pro is validated for use with liquids exhibiting kinematic viscosity up to 500 mm²/s (cSt) and densities up to 2.2 g/cm³—covering a broad range of common laboratory reagents including glycerol-water mixtures, concentrated salt solutions, ethanol/water blends, and diluted mineral acids. It is not intended for use with highly viscous polymers, suspensions, or particulate-laden media. All wetted materials comply with USP Class VI biocompatibility standards and FDA 21 CFR 177.1550 (fluoropolymer resins). Device labeling and user documentation conform to EN ISO 15195:2018 (calibration laboratories) and support audit readiness under GMP Annex 11 and FDA 21 CFR Part 11 when paired with electronic logbooks or LIMS-integrated dispensing records.
Software & Data Management
As a manually operated, non-electronic device, the DispensMate-Pro does not incorporate onboard software or digital connectivity. However, its mechanical calibration certificate includes traceable reference data aligned to NIST-traceable standards, and each unit ships with a factory-verified calibration report (including gravimetric test results at 0.5, 2.5, and 5.0 mL points). Laboratories may integrate usage logs, maintenance schedules, and recalibration intervals into existing QMS platforms (e.g., LabWare LIMS, Veeva Vault QMS) using standardized templates compliant with ISO/IEC 17025 clause 7.7 (Control of Equipment Records).
Applications
- Precise reagent addition in spectrophotometric assays (e.g., Bradford, Lowry, BCA protein quantification)
- Standard solution preparation for HPLC mobile phase blending and ICP-MS dilution series
- Controlled acid/base delivery in titration training and endpoint detection workflows
- Sterile buffer dispensing in aseptic technique practice and microbial media supplementation
- Reproducible solvent transfer in extraction protocols (e.g., liquid–liquid partitioning, SPE conditioning)
FAQ
Is the DispensMate-Pro suitable for dispensing hydrochloric acid (12 M)?
Yes—when used with appropriate adapter sealing and following recommended cleaning intervals, it handles 12 M HCl due to full PTFE/FEP wetted-path construction.
Can this dispenser be sterilized in an autoclave?
Yes—the main body, piston assembly, and adapters are rated for 121 °C, 20-minute steam autoclaving; disassembly per manual instructions is required prior to sterilization.
What is the minimum recommended volume for reliable accuracy?
For optimal precision within stated error limits, dispensing volumes ≥1.0 mL are recommended; volumes below 0.5 mL fall outside the calibrated range and require independent verification.
Does the device require periodic recalibration?
Yes—annual recalibration is advised per ISO 8655-3 and internal quality policies; users should maintain calibration logs documenting date, technician, method (gravimetric), and deviation values.
How is traceability maintained during routine use?
Each unit carries a unique serial number linked to its calibration certificate; laboratories must assign secondary identifiers (e.g., asset tags) and record usage against SOP-controlled dispensing logs to satisfy GLP/GMP traceability mandates.
