Seward Stomacher Lab Blenders & Accessories
Labman Instruments is official distributor for Seward Stomacher Lab Blenders and accessories for Belgium, Netherlands and Luxembourg.
Trusted Stomacher Lab Blenders for Reliable Sample Preparation
Seward’s Stomacher lab blenders are the gold standard in laboratory sample preparation — trusted worldwide and especially dominant in the food, microbiology, pharmaceutical, and environmental sectors. As the market leader with unmatched brand recognition, Stomacher has become synonymous with reliable, contamination-free homogenization.
Built to last, each unit is equipped with a powerful, durable motor designed to deliver over 10 years of dependable service, even under heavy daily use. These machines are true workhorses — made for labs that demand performance without compromise.
From the compact Stomacher 80 for small volume samples, to the best-selling Stomacher 400 series and the high-capacity Stomacher 3500 range, there’s a model to suit every workflow. And with purpose-built Stomacher bags, bag racks, and bag openers, your entire sample prep process is streamlined from start to finish.
As the official BeNeLux distributor, we offer expert advice and full access to the complete range of Seward Stomacher lab blenders and accessories.
Stomacher 80 Series - Compact Power for Small-Volume Sample Preparation
Explore the Stomacher 80 Biomaster and microBiomaster lab blenders — ideal for small-volume, high-precision applications. Designed for efficient blending of volumes from 250 µL to 80 mL, these compact units are perfect for pharmaceutical, clinical, and small-sample food labs. Pair them with specialized Stomacher 80 bags, bag racks, and bag openers for a complete, contamination-free workflow.
- Compact with digital timer and speed control
- Sample capacity 250 µl up to 80 ml
- Adjustable paddle clearance
- Continuous and timed operation modes
- Ideal for precise lab blending
Original price was: €3.415,82.€3.074,24Current price is: €3.074,24. excl. VAT
- Compact and robust lab blender
- Processes 5 ml up to 80 ml samples
- Three fixed paddle speeds
- Simple timer with auto shut-off
- Suitable for routine microbiology
Original price was: €2.994,11.€2.694,70Current price is: €2.694,70. excl. VAT
- Clips for Stomacher sample bags
- Reliable leak-proof sealing
- Easy on/off application
- Maintains sample integrity
- Bulk pack: 200 clips
Original price was: €425,00.€382,50Current price is: €382,50. excl. VAT
- Opens Stomacher 80 bags easily
- Ergonomic and durable
- Reduces contamination risk
- Speeds sample preparation
- Compact and easy to clean
Original price was: €65,00.€58,50Current price is: €58,50. excl. VAT
- Holds 10 Stomacher 80 bags
- Durable plastic construction
- Organizes lab workflows
- Prevents cross-contamination
- Space-efficient design
Original price was: €101,00.€90,90Current price is: €90,90. excl. VAT
- Integrated strainer for clarity
- 200 bags per pack (20 x 10)
- Filters solids during blending
- Used in microbiology labs
- Designed for Stomacher 80
Original price was: €130,00.€117,00Current price is: €117,00. excl. VAT
- Dual-layer bag with strainer
- Extra protection for critical tests
- 200 bags per pack (20 x 10)
- Used in contamination-sensitive labs
- Tailored for Stomacher 80
Original price was: €171,00.€153,90Current price is: €153,90. excl. VAT
- Combines closure + strainer
- 200 bags per pack (20 x 10)
- Enhanced safety and clarity
- Perfect for food & clinical labs
- Works with Stomacher 80
Original price was: €174,00.€156,60Current price is: €156,60. excl. VAT
- Secure closure to prevent leaks
- 200 bags per pack (20 x 10)
- Compatible with Stomacher 80
- Ideal for critical lab work
- No sealing required
Original price was: €133,00.€119,70Current price is: €119,70. excl. VAT
- Standard bag for Stomacher 80
- 2000 bags per pack (40 x 50)
- For small-volume sample prep
- Robust & easy-to-load format
- Suitable for diagnostics and pharma
Original price was: €227,00.€204,30Current price is: €204,30. excl. VAT
Stomacher 400 Series - The Industry Standard in Laboratory Sample Preparation
The Stomacher 400 series — including the Classic and Circulator models — is the global standard for microbiological sample prep. Trusted by food and clinical labs worldwide, these blenders are compatible with a wide variety of Stomacher 400 bags, including closure, strainer, and ECO variants. Add bag racks and openers to streamline your workflow and boost efficiency.
- Same features as Stomacher 400
- Added glass door for improved visibility
- Enhanced safety and monitoring
- 80 ml – 400 ml capacity
- Ideal for sensitive sample handling
Original price was: €4.069,47.€3.662,52Current price is: €3.662,52. excl. VAT
- Capacity: 80 ml up to 400 ml
- Three paddle speeds and timer
- Adjustable paddle clearance
- Designed for food and pharma labs
- Durable and easy to clean
Original price was: €3.788,33.€3.409,50Current price is: €3.409,50. excl. VAT
- Integrated strainer for solid-liquid separation
- Enhances sample clarity and workflow
- 200 bags per pack (20 x 10)
- Perfect for food safety testing
- Fits all Stomacher 400 Circulator models
Original price was: €229,00.€206,10Current price is: €206,10. excl. VAT
- Built-in secure closure system
- Reduces risk of leaks or spills
- 250 bags per pack (25 x 10)
- Ideal for liquid sample blending
- Designed for Stomacher 400 Circulator
Original price was: €179,00.€161,10Current price is: €161,10. excl. VAT
- Standard bag for Stomacher 400 Circulator
- Durable, lab-grade polyethylene
- 500 bags per pack (10 x 50)
- Ideal for food and microbiology testing
- Clean, hygienic sachet packaging
Original price was: €137,00.€123,30Current price is: €123,30. excl. VAT
- Clips for Stomacher sample bags
- Reliable leak-proof sealing
- Easy on/off application
- Maintains sample integrity
- Bulk pack: 200 clips
Original price was: €425,00.€382,50Current price is: €382,50. excl. VAT
- Holds 10 Stomacher 400 bags
- Durable, chemical-resistant plastic
- Keeps lab organized and efficient
- Easy to clean and sanitize
- Ideal for high-throughput labs
Original price was: €141,00.€126,90Current price is: €126,90. excl. VAT
- Opens Stomacher 400 bags safely
- Durable, easy-to-use tool
- Minimizes sample spills
- Speeds up sample prep
- Essential for clean handling
Original price was: €65,00.€58,50Current price is: €58,50. excl. VAT
- Single bag holder for Stomacher 400
- Durable and chemical resistant
- Provides stable support
- Easy to clean design
- Ideal for small labs
Original price was: €70,00.€63,00Current price is: €63,00. excl. VAT
- 177 mm pipette with 3.7 mm ID
- Narrower tip for controlled flow
- Durable and disposable design
- Perfect for standard lab sampling
- Supplied in packs of 2000
Original price was: €71,00.€63,90Current price is: €63,90. excl. VAT
- Extra-long 250 mm format
- Reaches into deep blender bags
- Rigid, high-grade polypropylene
- Designed for precise liquid handling
- Pack of 1000 pipettes
Original price was: €135,00.€121,50Current price is: €121,50. excl. VAT
- 177 mm long, 4.1 mm inner diameter
- Ideal for viscous sample pipetting
- Strong, shatterproof polypropylene
- Compatible with Stomacher workflows
- Bulk pack of 2000 pipettes
Original price was: €72,00.€64,80Current price is: €64,80. excl. VAT
- Full-width integrated strainer
- 200 bags per pack (20 x 10)
- Improves clarity and filtration
- Compatible with Classic models
- Ideal for food and water testing
Original price was: €228,00.€205,20Current price is: €205,20. excl. VAT
- Side strainer for liquid separation
- 500 bags per pack (10 x 50)
- Used in sample clarification
- Reduces post-processing steps
- Works with Stomacher 400 Classic
Original price was: €540,00.€486,00Current price is: €486,00. excl. VAT
- Built-in closure for added safety
- 250 bags per pack (25 x 10)
- No need for clips or sealing
- Easy to handle and reseal
- For Stomacher 400 Classic
Original price was: €177,00.€159,30Current price is: €159,30. excl. VAT
- Standard format for Stomacher 400
- 500 bags per pack (10 x 50)
- Strong and reliable polyethylene
- Suitable for daily lab use
- Great for food and clinical testing
Original price was: €133,00.€119,70Current price is: €119,70. excl. VAT
Stomacher 400 EVO Series - Advanced Blending Performance for High-Throughput Labs
The Stomacher 400 EVO sets a new benchmark in laboratory blending with enhanced durability and smart, easy-clean design. Ideal for high-throughput environments, it works seamlessly with all standard Stomacher 400 series bags. Complete your setup with the dedicated EVO bag opener and bag rack for optimal performance and lab hygiene.
- Enhanced digital controls and display
- Large capacity up to 400 ml
- Adjustable speed and timer settings
- Improved paddle clearance adjustment
- Suitable for high-demand labs
Original price was: €3.788,32.€3.409,49Current price is: €3.409,49. excl. VAT
- Ideal for TVC & general testing
- Compact format (155 x 200 mm)
- 500 bags per pack (10 x 50)
- For Stomacher 400 ECO use
- Sustainable single-use solution
Original price was: €96,20.€86,58Current price is: €86,58. excl. VAT
- Optimized for pathogen testing
- Extra headspace (177 x 200 mm)
- 500 bags per pack (10 x 50)
- Compatible with Stomacher 400
- Cost-effective and eco-friendly
Original price was: €103,00.€92,70Current price is: €92,70. excl. VAT
- Holds 10 Stomacher 400 EVO bags
- Durable and easy to clean
- Stable and secure support
- Ideal for busy laboratories
- Space-saving design
Original price was: €320,00.€288,00Current price is: €288,00. excl. VAT
- Opener for Stomacher 400 EVO bags
- Ergonomic and sturdy design
- Quick, safe bag access
- Reduces contamination risk
- Improves lab efficiency
Original price was: €65,50.€58,95Current price is: €58,95. excl. VAT
- Clips for Stomacher sample bags
- Reliable leak-proof sealing
- Easy on/off application
- Maintains sample integrity
- Bulk pack: 200 clips
Original price was: €425,00.€382,50Current price is: €382,50. excl. VAT
Stomacher 3500 Series - Maximum Capacity for Large-Volume Sample Blending
Designed for large sample volumes up to 3500 mL, the Stomacher 3500 and its variants — including the W Biowasher and Thermo Bioreactor — are ideal for reference labs and environmental testing. Use them with rugged Stomacher 3500 Jumbo bags, autoclavable options, and specialized bag racks to handle high-volume workflows with ease.
- Handles large sample volumes up to 4,500 ml
- Auto and manual speed/time controls
- Safety door stops paddles immediately
- Adjustable paddle clearance up to 20 mm
- Easy bag loading and cleaning for efficiency
Original price was: €6.880,00.€6.192,00Current price is: €6.192,00. excl. VAT
- Includes built-in water washing system
- Processes 1000 – 3500 ml samples
- Automatic and manual controls
- Paddle clearance adjustable
- Ideal for sterile, hygienic environments
Original price was: €6.600,00.€5.940,00Current price is: €5.940,00. excl. VAT
- Integrated heating for enzymatic digestion
- Large 1000 – 3500 ml capacity
- Designed for Trichinella parasite testing
- Adjustable paddle speed and timer
- Supports specialized food safety workflows
Original price was: €9.840,00.€8.856,00Current price is: €8.856,00. excl. VAT
- High capacity: 400 – 3500 ml samples
- Auto/manual control for speed & time
- Adjustable paddle clearance
- Robust motor for heavy use
- Designed for food and environmental labs
Original price was: €6.460,00.€5.814,00Current price is: €5.814,00. excl. VAT
- XL clips for large Stomacher bags
- Secure and leak-proof seal
- Easy to use and remove
- Prevents contamination
- Bulk pack of 200 clips
Original price was: €455,00.€409,50Current price is: €409,50. excl. VAT
- Supports 3 Stomacher 3500 bags
- Heavy-duty, chemical-resistant plastic
- Stable for large-volume samples
- Easy to clean and maintain
- Perfect for high-capacity labs
Original price was: €250,00.€225,00Current price is: €225,00. excl. VAT
- Extra-thick 80 micron for tough samples
- 250 bags per pack (5 x 50)
- Prevents splitting during blending
- High-capacity homogenization
- For Stomacher 3500
Original price was: €241,00.€216,90Current price is: €216,90. excl. VAT
- Sterilizable sample bag (autoclavable)
- Withstands high-temperature cycles
- 250 bags per pack (10 x 50)
- Ideal for sterile sample workflows
- Compatible with Stomacher 3500
Original price was: €231,00.€207,90Current price is: €207,90. excl. VAT
- For high-volume blending (up to 4000 mL)
- 250 bags per pack (5 x 50)
- Designed for Stomacher 3500 series
- Ideal for reference and pooled samples
- Heavy-duty construction
Original price was: €228,00.€205,20Current price is: €205,20. excl. VAT
Frequently asked questions
What is a Stomacher and how does it work in a laboratory setting?
A Stomacher is a lab blender used for homogenizing solid and semi-solid samples in sterile bags or filter bags. It works by paddling the sample back and forth inside a sealed Stomacher bag, breaking it down for analysis without direct contact. This ensures a contamination-free environment ideal for microbiological testing in food, pharmaceutical, and environmental labs.
Which Stomacher lab blender model is best for food microbiology?
The Stomacher 400 Circulator is the most widely used model in food microbiology labs. It provides excellent recovery of microorganisms and ensures consistent sample preparation, making it ideal for pathogen detection, total viable count (TVC), and hygiene testing. For high-throughput environments, the Stomacher 400 EVO offers even more durability and efficiency.
How long does a Seward Stomacher typically last in daily lab use?
Seward Stomachers are engineered to be long-lasting workhorses, with motors designed to withstand over 10 years of daily laboratory use. Their robust build quality makes them a reliable investment for labs that process large sample volumes regularly.
What are the differences between Stomacher 80, 400, and 3500 models?
Stomacher 80 is compact and ideal for small-volume samples (250 µL to 80 mL).
Stomacher 400 is the most versatile model, handling 80–400 mL samples — the standard in food and clinical labs.
Stomacher 3500 is designed for large-volume testing (up to 3500 mL), often used in reference labs or applications like sponge testing.
Why are Stomacher lab blenders preferred over traditional homogenizers?
Stomacher lab blenders offer sterile, contact-free homogenization inside disposable bags, eliminating the need to clean internal components. Unlike traditional blenders, there’s no risk of cross-contamination, making them ideal for microbiological applications that demand accuracy and reproducibility.
Can Stomacher bags be autoclaved or used for pathogen testing?
Yes. Several Stomacher bag variants are suitable for pathogen testing and autoclaving. For example, the Stomacher ECO bags are designed for sensitive microbiological applications, while autoclavable bags like the BA6042/ACL are ideal for workflows requiring sterilization.
What accessories are available for Stomacher lab blenders?
Seward offers a full range of Stomacher accessories, including:
Bag racks for organized prep and incubation
Bag openers to simplify filling and handling
Bag clips for secure sample closure
A wide selection of Stomacher bags (standard, strainer, closure, and autoclavable variants) tailored to different applications
Where can I buy genuine Stomacher bags and blenders in the BeNeLux?
As the official distributor for Seward Stomacher in the Belgium, Netherlands or Luxembourg, Labman Instruments offers the full range of genuine Stomacher lab blenders, Stomacher bags, and accessories with expert support, fast delivery, and competitive pricing. Contact us for product advice or to request a quote.