COLO.Science — OVERHEAD STIRRER — DIGITAL PRECISION
OVSTD20 Digital Overhead Stirrer for Laboratory Mixing
The OVSTD20 digital overhead stirrer is a powerful, brushless laboratory mixer designed for continuous operation. With a stepless speed control 100–2500 rpm, 20 L maximum capacity, digital timer (0–999 min), and three rotation modes (forward, reverse, alternating), it supports routine mixing, emulsification, and dispersion workflows in pharmaceutical, cosmetic, food, chemical, and environmental laboratories.
20 L capacity
Brushless motor
Digital timer
Three rotation modes
Stainless steel chuck
1000 W motor
COLO.SCIENCE – OVERHEAD STIRRER / OVST SERIES
Why OVSTD20 is a strong choice for routine laboratory mixing
The OVSTD20 digital overhead stirrer combines a maintenance‑free brushless motor with a precise digital controller for stable and reproducible mixing. It is built for laboratories that need reliable emulsification, dispersion, and high‑viscosity mixing in one easy‑to‑use instrument.
This model is suitable for pharmaceutical and biotech labs, cosmetics, food industry, chemical and petrochemical, environmental protection, and quality control workflows. Digital speed control, real‑time RPM display, timer, and three rotation modes help users manage routine mixing while keeping the workflow practical and efficient.
Key features
- Digital control with LCD display, real‑time speed readout, and timer (0–999 min).
- Brushless motor – high efficiency, low noise, maintenance‑free, suitable for continuous duty.
- Three rotation modes – positive rotation, reverse rotation, and alternating positive/negative for optimized mixing patterns.
- Stainless steel chuck (0.5–10 mm bore) holds various impellers and shafts.
- Plastic housing – lightweight, corrosion‑resistant, and impact‑resistant.
- Heavy‑duty support stand and clamp included for safe operation.
- Laboratory graduated glass beaker (600 ml) and four‑blade propeller included as standard.
Where it fits best
- Routine emulsification (oil/water, water/oil) and dispersion.
- Particle size reduction and deagglomeration.
- Cell disruption (yeast, bacteria, plant tissue).
- High‑viscosity mixing (creams, pastes, polymers).
- Laboratories that need a practical digital overhead stirrer with reproducible results and timer functions.
PRACTICAL USE & WORKFLOW
Why users choose OVSTD20
OVSTD20 is designed to give laboratories a practical balance of performance and usability. The instrument supports precise speed setting, real‑time RPM display, timer programming, and reproducible results for emulsion preparation, cell disruption, nano‑dispersion, and high‑viscosity mixing.
The interface is built around a simple human‑machine workflow with digital controls and a help menu. Three rotation modes (forward, reverse, alternating) allow optimized mixing patterns for different applications. Advanced torque control ensures stable performance even under load.
COLO.Science & configuration support
COLO.Science supports overhead stirrer selection according to sample viscosity, batch volume, required propeller type, and future scale‑up needs. This matters when the user needs more than the standard four‑blade propeller setup.
Optional items include a built‑in thermal printer, professional stirring software, additional propeller types (anchor, turbine, paddle), and custom vessel stands. Manual or automatic clamping solutions are available for various vessel formats.
TECHNICAL SPECIFICATIONS — OVSTD20 DIGITAL OVERHEAD STIRRER
| Model | OVSTD20 (digital) |
| Max. stirring capacity (H₂O) | 20 L |
| Speed range | 100 – 2500 rpm (stepless digital regulation) |
| Working time | Continuous |
| Minimum revolution | 100 rpm |
| Exterior | Plastic shell |
| Driving mode | Brushless motor |
| Motor power | 1000 W |
| Setting mode | Digital |
| Speed display mode | Digital (LCD) |
| Timer | Yes (0–999 min) |
| Max viscosity | 10,000 mPas |
| Exterior size (W×L×H) | 115 × 95 × 400 mm |
| Packing size (W×L×H) | 400 × 250 × 410 mm |
| Plate size | 200 × 300 mm |
| Plate load | 50 kg |
| Power supply (50/60Hz) | 100–240 V |
| Net / Gross weight | 7 kg / 8 kg |
Standard configuration
- OVSTD20 drive unit with digital controller
- Stainless steel four‑blade propeller
- Heavy‑duty support stand + clamp
- Laboratory graduated glass beaker (600 ml)
- Operation manual & calibration certificate
Manufacturer reserves the right to change technical specifications without notice.
Configuration notice — propeller type, vessel adapter, and options should be confirmed per application
The official technical specification defines the standard OVSTD20 reference configuration. Optional items such as additional propeller types (anchor, turbine, paddle), manual or automatic vessel stands, flow‑through chambers, and temperature probe adapters should be confirmed according to the user’s sample viscosity, batch volume, workflow, and final quotation.
Applications and laboratory value
Routine mixing & emulsification
A practical fit for laboratories performing emulsification, dispersion, and high‑viscosity mixing as part of daily QC, routine testing, and standard laboratory procedures.
Timer & three rotation modes
Supports timed mixing, forward/reverse/alternating rotation patterns, and reproducible results for method‑based laboratory workflows.
Flexible laboratory use
Suitable for pharmaceutical, cosmetic, food, chemical, environmental laboratories, and general quality control where brushless digital overhead stirring is needed.
Ideal for
- Laboratories looking for a digital overhead stirrer with brushless motor for routine mixing
- Users who need 100–2500 rpm with real‑time speed readout and timer
- Pharmaceutical, cosmetic, food, chemical, and environmental labs
- Teams that value digital workflow, easy propeller exchange, and robust construction
- Laboratories planning manual or automatic vessel configurations for different sample formats
OVSTD20 — practical digital overhead stirring for everyday laboratory work
A reliable digital overhead stirrer for laboratories that need brushless motor durability, touch‑screen usability, timer and three rotation modes, and application‑oriented configuration flexibility — backed by COLO.Science.
