Seward Stomacher 400 Circulator

Meeting the food safety and quality demands of today's microbiologists

The Seward Stomacher 400 Circulator is the world's leading laboratory paddle blender for food microbiologists and offers fast, reliable blending and homogenizing laboratory samples. Paddles apply pressure to a sample within a sterile, disposable sample bag. Contents are blended and homogenized, effectively washing out deep-seated organisms. Laboratory samples can be collected, transported, processed and disposed of without ever being handled. Paddle design produces homogenization by a combination of crushing and stirring. When the door is closed, curved paddles combined with an island baffle inside the door chamber and round bottom bags mold the bag contents into a tubular ring. In operation, the paddles crush the sample and circulate the suspended debris and diluent. In this process, the diluent and sample are extruded under pressure past the island baffle and are vigorously stirred from top to bottom.

The Stomacher Circulator principle improves organism recovery over older square paddle designs by enhancing the stirring and extrusion forces applied to the sample and in doing so driving more organisms into suspension for analysis.

Whatever method you use to enumerate and identify bacteria, yeasts and molds in your laboratory, thorough reproducible homogenization of the sample is the first and most critical step. Numerous studies have demonstrated the Circulator enhancement as a positive benefit to pathogen testing procedures in traditional microbiology and PCR based techniques. As the sample is crushed during operation, the patented curved shape of the Circulator paddles create a washing effect driving more organisms in suspension thereby providing a better homogenized sample for analysis.

Key Features

• Improved organism recovery over older square paddle designs
• No risk of cross contamination between samples
• One touch user-programmable time and speed functions
• Three paddle speeds and times from 1 second to 99 minutes 59 seconds
• Timer can be set for 30, 60, or 120 seconds or can run continuously
• Control panel with programmable settings or 'hands-free' auto-run
• Countdown of processing time
• Removable door for easy cleaning of paddle chamber
• 3 year warranty and 10 year service support