The Pro Overhead Stirrer is an industrial-grade high-torque digital overhead mechanical stirrer featuring a brushless DC motor (180W input / 160W output), microprocessor-controlled speed regulation (50-1100 rpm, accuracy ±10 rpm), LCD display for real-time monitoring of set speed, actual speed, torque trend, and timer, RS232 interface for PC control and data logging, exceptional torque (300 N·cm), and ultra-high viscosity handling (up to 100,000 mPa·s), designed for the most demanding high-viscosity and large-volume (up to 70 liters) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, industrial, and research laboratories .
Key features include a maintenance-free, explosion-proof brushless DC motor for quiet, long-lasting operation and safe use in volatile environments; through-shaft "top-cross" stirring paddle design for easy impeller height adjustment and easy container replacement; anti-spill smooth start mechanism to prevent sample splashing; overload protection (LCD visual alarm, automatic motor stop, safety cut-off circuit) for equipment and sample safety; torque display for real-time viscosity monitoring; programmable timer (0-99h59min) for unattended overnight operation; silicone protective sleeve protecting drill chuck from erosive vapor and corrosion; and compatibility with a wide range of stirrer shafts (0.5-10 mm chuck diameter) with self-locking hand-tightening tool-free chuck .
The Pro Overhead stirrer represents the highest capacity model in the Pro Overhead stirrer series, with 70L stirring capacity (3.5x OS20-Pro), 300 N·cm torque (7.5x OS20-Pro, 5x OS40-Pro), 100,000 mPa·s viscosity handling (10x OS20-Pro, 2x OS40-Pro), 160W output power (3.2x OS20-Pro, 1.6x OS40-Pro), and timer function (0-99h59min) for overnight operations, making it suitable for the most demanding industrial-scale high-viscosity applications .
For the pharmaceutical formulation scientist and quality control chemist, the Pro Overhead stirrer supports mixing of ultra-high-viscosity creams, ointments, gels, suspensions, and pastes at batch sizes up to 70L, API dissolution testing, and large-volume buffer and media preparation . For the biopharmaceutical manufacturing scientist, it enables processing of cell pastes, protein solutions, fermentation broths, and monoclonal antibody formulations with viscosity up to 100,000 mPa·s . For the clinical laboratory scientist and diagnostic manufacturing manager, it facilitates industrial-scale bulk reagent preparation for high-volume immunoassays, clinical chemistry analyzers, and diagnostic kit manufacturing .
Universal voltage (100-240V, 50/60Hz) enables use in laboratories worldwide without voltage conversion, while the compact (83 × 220 × 186 mm) and lightweight (3.2 kg) design allows easy benchtop placement . The IP21-rated splash-resistant housing ensures safe operation in biosafety cabinets and fume hoods, including handling of biohazardous materials . RS232 connectivity allows integration into automated workflows and LIMS for GMP documentation .
For the patient undergoing pharmaceutical therapy, the Pro Overhead stirrer exceptional torque and viscosity handling ensure consistent formulation quality, batch-to-batch uniformity, and accurate API release testing—supporting the manufacturing of safe, effective ultra-high-viscosity medications such as topical creams, ointments, transdermal patches, and biopharmaceuticals . For patients requiring diagnostic testing, consistent industrial-scale reagent preparation reduces inter-run variability and improves the reliability of diagnostic test results across high-volume clinical chemistry, pharmaceutical QC, and analytical testing applications .