Nichiryo DISPET Mini Manual Bottle Top Dispenser
| Brand | Nichiryo |
|---|---|
| Origin | Japan |
| Model | DISPET Mini |
| Type | Manual Bottle Top Dispenser |
| Volume Range | 100–2000 µL (selectable in 5 fixed increments: 100, 250, 500, 1000, 2000 µL) |
| Accuracy | ±0.4% |
| Precision (CV) | ≤2% |
| Construction | Chemically resistant PTFE, ETFE, and PP components |
| Compatibility | Fits GL45 standard bottle threads |
| Certifications | ISO 8655-3 compliant for piston-type dispensers |
Overview
The Nichiryo DISPET Mini is a precision-engineered manual bottle top dispenser designed for reliable, repeatable volumetric delivery of low-volume liquid reagents in analytical, quality control, and research laboratory environments. Based on the proven positive-displacement piston principle, the DISPET Mini eliminates dependence on operator technique by decoupling volume setting from dispensing force—ensuring consistent output across users and shifts. Its compact form factor and lightweight construction make it ideal for benchtop workflows where space efficiency and ergonomic handling are critical, particularly in high-throughput sample preparation, titration support, and calibration standard dilution protocols.
Key Features
- Fixed-Volume Precision Architecture: Five pre-calibrated dispensing volumes (100, 250, 500, 1000, and 2000 µL) are selected via a tactile rotary dial with audible click feedback—minimizing misalignment errors common in continuously adjustable mechanisms.
- ISO 8655-3 Compliant Performance: Validated accuracy of ±0.4% and coefficient of variation (CV) ≤2% meet international standards for Class A piston-operated dispensers, supporting traceable liquid handling in GLP and GMP-regulated settings.
- Chemical Resistance & Contamination Control: Fluid path components—including piston, seal, and nozzle—are fabricated from PTFE, ETFE, and polypropylene to withstand aggressive solvents (e.g., acetone, chloroform, 1M NaOH), acids, and bases; non-metallic construction prevents catalytic degradation or leaching.
- GL45 Thread Compatibility: Direct-mount design fits all standard 45 mm bottleneck containers (including reagent bottles, solvent carboys, and waste reservoirs) without adapters—reducing cross-contamination risk and setup time.
- Ergonomic Single-Hand Operation: Low-activation-force lever mechanism reduces repetitive strain during extended use; integrated safety lock prevents accidental dispensing during transport or storage.
Sample Compatibility & Compliance
The DISPET Mini accommodates aqueous solutions, organic solvents, viscous buffers (up to 50 cP), and mildly corrosive reagents commonly used in HPLC mobile phase preparation, ELISA assay setup, and environmental sample preservation. It is not intended for volatile, highly viscous (>100 cP), or particulate-laden liquids. As an ISO 8655-3 certified device, it supports compliance with ISO/IEC 17025 method validation requirements and aligns with FDA 21 CFR Part 11 expectations for documented instrument performance when paired with lab-specific SOPs and calibration logs. Routine verification per ISO 8655-6 is recommended every 3 months or after 500 dispense cycles.
Software & Data Management
The DISPET Mini operates as a standalone mechanical instrument without embedded electronics or connectivity. Consequently, it requires no firmware updates, software licensing, or cybersecurity configuration—making it suitable for air-gapped laboratories and environments with strict IT governance policies. Calibration records, usage logs, and maintenance history must be maintained manually per institutional GLP/GMP documentation practices. Optional accessories include a calibration verification kit (certified gravimetric weights and Class A volumetric flasks) and a dedicated cleaning station compatible with ultrasonic baths.
Applications
- Preparation of calibration standards for ICP-MS, AAS, and UV-Vis spectroscopy
- Accurate dosing of internal standards and surrogates in environmental testing (e.g., EPA Method 525.3)
- Reagent addition in enzymatic assays and PCR master mix assembly
- Controlled solvent delivery during thin-layer chromatography (TLC) plate development
- Low-volume acid/base addition in potentiometric titrations (e.g., ASTM D974)
- Consistent dilution series generation for microbiological media preparation (ISO 6887-1)
FAQ
Is the DISPET Mini autoclavable?
No—its polymer components are not rated for steam sterilization. Cleaning is performed using compatible solvents and validated wipe-down protocols.
Can it be used with hydrofluoric acid (HF)?
No—HF attacks both PTFE and ETFE over time. Use only with HF-compatible dispensers certified for such applications.
Does it require annual recalibration by the manufacturer?
Not mandatory; however, users must perform in-house verification at defined intervals per ISO 8655-6 and document results for audit readiness.
What is the expected service life under normal lab use?
With proper cleaning and avoidance of abrasive particles, the piston seal assembly typically maintains specification for ≥10,000 dispense cycles.
Is there a version with digital volume display?
No—the DISPET Mini is intentionally analog to maximize reliability and minimize failure modes; Nichiryo offers the DISPET Digital series for applications requiring variable-volume electronic control.
