Stomacher Blender

Product Overview

A stomacher blender, also known as a paddle homogenizer, bag homogenizer, or flap homogenizer, is the standard instrument for microbiological sample preparation in food, pharmaceutical, clinical, cosmetic, and environmental testing. The BKMAMLAB Labshark stomacher blender (models 10A, 20A Heating Sterile, 20A Sterile) processes solid and semi-solid samples inside sterile, single-use bags, eliminating cross-contamination between runs and removing the need for cleaning between samples.

Key Features & Advantages

• Contamination-free sample preparation: Samples are processed inside sterile, single-use homogenizer bags, eliminating cross-contamination between runs and removing the need for cleaning between samples.
• Three model configurations: 10A (standard), 20A Sterile (standard sterile), 20A Heating Sterile (with temperature maintenance for heat-sensitive organisms).
• Optional heating function: The 20A Heating Sterile model maintains sample temperature during processing to protect heat-sensitive microorganisms.
• Peristaltic paddle mechanism: Generates high-frequency peristaltic-like pressure that efficiently releases microorganisms, cells, and intracellular contents into the surrounding buffer.
• Compatible bag sizes: Supports sterile homogenizer bags in standard sizes and volumes from 50 mL to 400 mL.

Technical Specifications

• Models: 10A, 20A Sterile, 20A Heating Sterile
• Working principle: Paddle-based peristaltic homogenization
• Bag compatibility: Standard sterile homogenizer bags, 50 mL to 400 mL
• Heating function: Available on 20A Heating Sterile model
• Recommended lab level: BSL-1 and BSL-2 microbiology laboratories
• Applications: Food, pharmaceutical, clinical, cosmetic, and environmental testing

Comparison & Competitive Advantages

Unlike traditional blenders and homogenizers that require disassembly, cleaning, and autoclaving between samples, the BKMAMLAB Labshark stomacher blender uses disposable sterile bags, reducing turnaround time and eliminating carryover contamination. Compared to probe-based homogenizers that generate aerosols and require decontamination, the sealed-bag design safely contains infectious or hazardous material. The optional heating function on the 20A Heating Sterile model addresses a limitation of standard stomacher blenders by protecting heat-sensitive organisms during extended processing.

Applications

Widely used in food-microbiology pathogen detection (meat, dairy, seafood, produce), pharmaceutical sterility and endotoxin testing, clinical specimen preparation, cosmetics microbial-limit testing, environmental water and soil monitoring, and HACCP-compliant production environments. Recommended for BSL-1 and BSL-2 microbiology laboratories, contract testing laboratories, and routine quality-control environments.

Frequently Asked Questions

Q: What is a stomacher blender and how does it work?

A: A stomacher blender uses a paddling mechanism that strikes a sealed sterile bag containing the sample and diluent at high frequency. This peristaltic-like pressure releases microorganisms, cells, and intracellular contents into the surrounding buffer. The sample never contacts the instrument, preventing cross-contamination.

Q: What is the advantage of using a stomacher blender over a traditional blender?

A: A stomacher blender eliminates the need for cleaning and autoclaving between samples because the sample is processed inside a disposable sterile bag. This reduces turnaround time, prevents cross-contamination, and safely contains infectious or hazardous material during homogenization.

Q: What is the heating function on the 20A Heating Sterile model for?

A: The heating function maintains sample temperature during processing, which protects heat-sensitive microorganisms that may be damaged by temperature drops during extended homogenization. This is particularly important for recovering viable but non-culturable organisms in food and environmental testing.

Q: What bag sizes are compatible with the BKMAMLAB Labshark stomacher blender?

A: The stomacher blender is compatible with standard sterile homogenizer bags in volumes from 50 mL to 400 mL. Always use bags designed for stomacher blenders to ensure proper sealing and paddle interaction.