Stomacher® Bags

The Stomacher® Bag range has been designed to fulfil all applications from sample blending, straining and storage, including bags designed for extensive blending (processes requiring more than 15 minutes on the machine) and small samples for life science applications.

Made from high quality food grade virgin LDPE granule extruded to 65um film thickness, our Stomacher® blender bags are designed to withstand extensive blending without tears or perforations. This provides a low cost option for sample preparation with no risk of cross contamination between samples.

All Stomacher® blender bags are irradiated sterile. A certificate of irradiation is available for all bag products upon request.

So which Stomacher® blender bag should I use?
Standard Bags (BA6041, BA6040, BA6042, BA6141)
•Available in 80, 400 and 3500ml
•Our simplest and widely used bag, designed for blended homogenisation of diluent samples for most applications.
•Available for both the Stomacher® 400 Classic (BA6041) and Stomacher® 400 Circulator (BA6141).
•Compatible with all lab blenders homogenizers.

Strainer Bags (BA6040/STR, BA6040/STR/DBL, BA6041/STR, BA6141/STR)
•Available in 80 and 400ml
•Strainer blender bags are for samples that produce a large amount of debris or fat or harder samples such as shellfish.
•Strainer blender bags contain a robust strainer element to make it easier to pipette the sample produced (pore size 0.5mm, prevents pore blockage and non-homogenous sample).
•Compatible with all lab blenders homogenizers.

Closure Bags (BA6040/CLR, BA6040/CLR/STR, BA6041/CLR, BA6141/CLR)
•Available in 80 and 400ml
•Closure blender bags are a robust range of bags with a wire mesh band at the top of the bag, allowing easy opening and tight closure for storage in a Seward bag rack or incubator.
•Includes the BA6040/CLR/STR for the Stomacher® 80 Biomaster and microBiomaster, providing a closable bag with a robust strainer element to make it easier to pipette the sample produced.
•Compatible with all lab blenders homogenizers.

Exclusive Bags
BA6040/MICRO
•Designed for use in the Stomacher® 80 Biomaster and microBiomaster
•Unique reverse-tapered design allows the blending of very small samples, ensuring a complete homogenised sample while maximising cell recovery.
•Ideal for the Bio-Sciences field i.e. homogenisation of mice spleens

BA6042/HD
•Designed for use in Stomacher® 3500 series
•These heavy duty 80um blender bags are especially designed for applications requiring long blending times or where the sample requires a highly durable encasing for sample preparation.

Seward Stomacher®
World leaders in sample preparation

For 50 years, Seward have been manufacturing the Stomacher® range of paddle blenders, used in microbiology sample preparation. The original and still regarded as the best, millions of samples are prepared daily in a Seward Stomacher®. Recognised as the gold standard in sample preparation, globally referenced in thousands of protocols and ISO methods, from food testing to life sciences, environmental to industrial applications.

A Stomacher® right for your application

The Seward Stomacher® 400 Circulator, EVO, and 3500 Jumbo are the only tools for companies serious about food safety, biome research, and large industrial testing. In bioscience, the Stomacher® 80 Biomaster and microBiomaster are proving invaluable in safe and efficient small sample processing in life science. The Stomacher® 4500 has established itself as the instrument of choice for preparing samples for the pathogen test protocols requiring jumbo-size samples. All Seward Stomacher® paddle blenders are supported by the range of Seward Stomacher® bags and accessories, designed to create a clean, efficient laboratory workspace.

Seward's Stomacher® Support

Seward's head office is based in Worthing, UK and they manufacture their range of Stomacher® lab blenders here. Every Seward Stomacher® is supported by a 3 year warranty and 10 year service and support promise. Global customers are supported from the UK Head Office. North, South America and Canada customers are supported by the US office, Seward Inc, based in Bohemia, New York, USA. Only Seward products carry the Stomacher® name, the original and still the best.