Large Cryogenic Grinding Mill – SPEX Freezer Mill® 6875 & 6875D
Specifically designed for grinding and pulverising tough and/or temperature sensitive samples immersed in liquid nitrogen. SPEX FreezerMills are capable of grinding almost anything.
- The SPEX 6875 Freezer/Mill® is a large cryogenic grinding mill that accommodates sample sizes ranging from 0.1 – 100 grams
- The 6875D provides double the capacity with dual grinding chambers, as well as dual pre-cooling chambers for increased throughput
Features
- Auto-Fill System available for automated filling with liquid nitrogen (standard on 6875D)
- Closed grinding vials eliminate sample cross-contamination, retain volatiles, control hazardous or critical samples, and simplify clean-up
- Coil holds one Large Grinding Vial, one Mid-Size Vial, four Standard Grinding Vials, or four Microvial Sets
- Equipped with liquid nitrogen level sensor and lid safety interlock for operator protection
- Grinding Vial Sets offered in a variety of materials including polycarbonate, stainless steel, and Cr-free steel
- Grinds samples in the 0.1 – 100 gram range (per chamber)
- Large cryogenic impact grinder with self-contained liquid nitrogen tub and insulated case
- Liquid nitrogen required for operation
- Magnetically driven impactor is the only moving part so there are no mechanical linkages or bearings to fail
- Programmable parameters include grinding time, impactor rate, pre-cooling and cooling times
- Stores up to 20 user-defined grinding programs for quick and easy recall
- Touch-screen control panel is detachable and can be used for remote operation
- Run history can be uploaded to a USB memory stick
- Training videos and manuals available on the touchscreen
- 2 pre-cooling chambers and 2 grinding chambers increase throughput rates on the 6875D
Typical Samples
Typical samples that can be processed by the Freezer/Mill 6875/6875D include:
- Plant & animal tissues
- Seeds
- Plastic and Polymers
- Pharmaceuticals
- Food products
- Electronic components
- Textiles and fibres
- Hair
- Teeth and bones
Vial Volumes
Micro | Small | Medium | Large | |
---|---|---|---|---|
Maximum Capacity | 0.5mL | 4mL | 25mL | 50mL |
Recommended Sample Capacity | 0.1-0.2mL | 1-2mL | 5-10mL | 10-20mL |
Recommended Sample Capacity (approx) | 30-200mg | 1-4g | 40g | 10-40g |
Brochure
Click here to download the SPEX 6875 Freezer Mill brochure or the SPEX 6875D Freezer Mill brochure.
Specifications
Model | 6875 | 6875D |
---|---|---|
Sample Capacity | 0.1 - 100g | 0.1 - 200g (using 2 chambers) |
Grinding Chambers | 1 | 2 |
Precooling Chambers | 0 | 2 |
Stored Grinding Programs | 20 | 20 |
LN2 Auto Fill | Optional | Standard |
Dimensions | 52cm x 55cm x 46cm | 51cm x 53cm x 65cm |
Weight | 24kg | 35kg |
Voltage | 240V/50Hz | 240V/50Hz |
CE Approved | Yes | Yes |
Applications
SPEX Freezer Mills are suited to a wide range of different samples, these include:
Life Science
- DNA/RNA extraction
- Yeast analysis
- Pharmaceuticals
- Drug testing
- Cannabis research
- Food testing
- Animal tissue
- Plant tissue
- Human tissue (incl. hair, teeth, bones, etc.)
Materials Science
- Plastics and polymers
- Composite materials
- Textiles
- Electronics
- RoHS/WEEE
Application Examples
Potato | |||
Beef Lung | |||
Hair | |||
Polyethylene Beads | |||
Plastic Toys | |||
Dog Treats |
Spex Freezer Mill on CSI Miami
6808 Vial Extractor
6758 End Plug Extractor for Micro Vials
Micro | Small | Medium | Large | |
---|---|---|---|---|
Part No. | 6757 Polycarbonate cylinder, stainless steel end plugs and impactor | 6751 Polycarbonate cylinder, stainless steel end plugs and impactor | 6881 Polycarbonate cylinder, stainless steel end plugs and impactor | 6801 Polycarbonate cylinder, stainless steel end plugs and impactor |
Maximum Capacity | 0.5mL | 4.0mL | 25mL | 50mL |
Recommended Capacity | 0.1-.02mL | 1-2mL | 5-10mL | 10-20mL |
Recommended Capacity | 30-200mg | 1-4g | 5-40g | 10-40g |
Diameter (Length 137mm including end caps) | 9.5mm | 22mm | 38.5mm | 57mm |
Freezer Mill 6770/6775 | 1 Set (3 total) | 1 | NA | NA |
Freezer Mill 6870/6875 | 4 Sets (12 total) | 4 | 1 | 1 |
Freezer Mill 6870D/6875D | 8 Sets (24 total) | 8 | 2 | 2 |
Freezer Mill 6970 | 8 Sets (24 total) | 8 | 2 | 2 |
Note: Capacities are a guide and will depend on density. |