Seward Stomacher® 400 Circulator Microbiologist Paddle Laboratory Blender

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SKU Voltage Weight (In Grams) Price (excluding VAT) Availability Qty To Purchase
Seward Stomacher® 400 Circulator Microbiologist Paddle Laboratory Blender 00400/001/AJ 110-120V 0 £2899.62 Usually Shipped in 3-4 Weeks Contact Us for Exact Information
Seward Stomacher® 400 Circulator Microbiologist Paddle Laboratory Blender 0400/001/EU 220-250V 0 £2899.62 5 + -

The Stomacher® 400 Circulator lab blender allows for easy and effective sample preparation whilst delivering reliable, consistent results. The unique patented ‘kidney’ paddle shapes improve organism recovery over traditional square paddle designs.     The Seward Stomacher® 400 Circulator is highly durable and reliable, blending solid or liquid samples efficiently and consistently.

The Seward Stomacher® 400 Circulator is also available with a window door, allowing a quick visual check of the sample whilst processing.

  • Suitable for volume sample sizes from 80ml – 400ml
  • Programmable process times and paddle speeds for consistent results
  • Easy to use – simple to set up, programmable operation with digital control panel
  • Easy to clean
  • Durable and reliable, designed for constant use




Food icon
Food Microbiology
Food icon
Life Sciences

Globally referenced in thousands of protocols for food microbiology, the Seward Stomacher® 400 Circulator is the gold standard in laboratory blenders. Used daily in food safety testing, producing accurate, repeatable results, the Stomacher® 400 Circulator has been at the forefront of food testing protocols for 50 years.  Recognised as the ‘work horse’ of the lab, it is the most commonly used model in food microbiology but has also established a reputation in the field of life sciences and healthcare.

Focusing on transparency, accuracy and traceability, the Seward Stomacher® 400 Circulator produces accurate, repeatable and robust results.

  • The unique patented Circulator paddle design improves organism recovery by enhancing the stirring and extrusion forces applied to the sample, driving more organisms into suspension for analysis.
  • The digital control panel provides simple control of processing features such as paddle speed and processing time, essential for consistent results.
  • The Stomacher® has a 3-year warranty owing to the quality of build and components and is highly durable and reliable.

Combine with the Seward Stomacher® 400 range of Stomacher® bags and accessories for clean, efficient sample processing and short term storage solutions.  The Stomacher® Bag Range has been designed to fulfill all applications from blending and stirring to short-term storage of samples, with no risk of cross contamination. The Stomacher® 400 Bag Range caters for both the Circulator bag (round-bottom) designed bags, and the Classic (square-bottomed) for the older square paddle designed Stomachers®.

Technical Specifications

Sample Size

80ml – 400ml

Product codes 0400/001/EU
Supply voltage: 220-250V 110-120V
Mains Inlet Fuses: T800mA 250V 5x20mm
breaking capacity: 35A @ 250V
T2.0A 250V 5x20mm
breaking capacity: 100A @ 250V
Supply Frequency: 50-60Hz 50-60Hz
Plug Top Fuse: F5A (UK cord set only)
Transformer Fuse: T250mA 250V 5x20mm, breaking capacity: 35A @ 250V
PCB Fuse: F2.5A 250V 5x20mm, breaking capacity: 100A @ 250V
Insulation: Class 1 (Earthed)
Installation: Over Voltage Category II
Pollution: Pollution Degree 2
Duty Cycle: Continuous
Rated Load: 140W
Sample volume: 80ml – 400ml
Paddle shape Unique ‘kidney’ shaped paddles
Adjustable paddles: Patented
Door options: Window version available
Warranty: 3 years
Service and support: 10 years
Dimensions: 330mm(w) x 355mm(d) x 300mm(h)
Dimensions (Packed): 490mm(w) x 480mm(d) x 520mm(h)
Weight: 23kg
Weight (Packed): 26kg
Compliant with: EMC Directive 2014/30/EU
Low Voltage Directive 2014/35/EU
Machinery Directive 2006/42/CE
IEC61010-1 1990 Safety Requirement for Electrical Equipment for Measurement, Control and Laboratory Use
UL 3101-1 1993 Electrical Equipment for Laboratory Use General Requirements
Delivered with: Power Cable / Quick Start Guide
Sachet of BA6141 Standard Circulator Stomacher bags
Bag sizes: 305mm(l) x 177mm(w)
Available in: Standard Classic / Standard Circulator / Closure / Strainer and Lateral Strainer
Minimum recommended capacity: 80ml
Maximum recommended capacity: 400ml
Maximum Recommended Sample Temp: 60°C
Recommended Operating Ambient Temperature Range: 10-35°C
Recommended Operating Relative Humidity Range: 10-89%
Adjustable Timer settings: 0 secs – 99 mins 59 secs (+-5%)
No load paddle speeds: 200rpm (±5%)
230rpm (±5%)
260rpm (±5%)
Paddle Clearance: 0-l0mm
    • SKU
    • Commodity Codes
  • Manufacturer
    Seward Ltd
  • Country of Origin
    United Kingdom
  • Voltage
    110-120V, 220-250V
  • Sample Size
    80ml – 400ml
  • Maximum Recommended Sample Temp