iStir 25L High-Capacity Digital Magnetic Stirrer

Powerful, precise and reliable stirring for laboratory volumes up to 25 litres

The iStir 25L is a powerful digital magnetic stirrer designed for demanding laboratory mixing applications involving volumes of up to 25 litres. Its maintenance-free brushless DC motor delivers dependable performance across a broad speed range, while digital control provides accurate and repeatable stirring.

A large stainless-steel setup plate, programmable pulse operation and gradual acceleration make the iStir 25L particularly well suited to larger vessels and challenging samples. Its compact, closed housing is easy to clean and helps protect the internal components from accidental liquid penetration.

Key Features

• Up to 25-litre stirring capacity for demanding laboratory applications
• 200–2,200 RPM speed range with adjustment in 10 RPM increments
• Digital display for clear monitoring of speed and operating time
• Maintenance-free brushless DC motor for quiet, reliable operation
• Programmable pulse mode with alternating clockwise and counter-clockwise rotation
• Gradual acceleration to reduce splashing and improve stir-bar coupling
• 1–999 minute timer plus continuous operating mode
• Large stainless-steel setup plate for durability and easy cleaning
• IP42-rated closed housing to help protect against accidental spills
• Supports magnetic stir bars up to 80 mm long

Controlled Mixing for Larger Volumes

The iStir 25L combines a high-capacity magnetic drive with precise electronic speed control. Its broad operating range allows gentle mixing of sensitive solutions as well as faster agitation where stronger circulation is required.

Speed accuracy of ±10 RPM helps produce consistent results between batches. The gradual-start function smoothly increases the stirring speed, helping the stir bar remain coupled during start-up and reducing the risk of splashing.

Programmable Pulse Operation

Pulse mode alternates the direction of rotation between clockwise and counter-clockwise operation. This can improve mixing uniformity, disrupt persistent flow patterns and help prevent material from settling in larger vessels.

Typical Applications

• Preparation of laboratory reagents, buffers and culture media
• Mixing larger batches of aqueous solutions
• Dissolving powders, salts and other soluble materials
• Sample preparation and routine quality-control work
• Educational, research and industrial laboratories
• General-purpose laboratory mixing where heating is not required

Technical Specifications

Optional Stir Bars

The stirrer can be paired with suitable large magnetic stir bars, including 60 mm and 80 mm options. The MS01-B2 60 × 14 mm stir bars are available separately in packs of 100.

Product images are illustrative. Specifications may be updated by the manufacturer without notice.