"The Freezer/Mill® programmable cryogenic grinder pulverizes through the toughest samples at cryogenic temperatures. Samples are placed in a vial and immersed in a self-contained insulated liquid nitrogen (LN2) tub, reaching cryogenic temperatures in minutes, where they are then pulverized with a magnetically driven impactor. The closed grinding vial impactor prevents sample cross-contamination. The single grinding and cooling chamber allows you to pre-cool and grind two sets of samples simultaneously.

Grind temperature sensitive samples while maintaining constant temperature, as the sample never leaves the enclosed liquid nitrogen bath. Enhanced safety features include a liquid nitrogen sensor and lid interlock. If the lid is opened while in process, grinding will stop. Auto-fill system is available for automated liquid nitrogen filling.

The large, high-resolution touch screen controls all parameters of the run. Store up to 20 user-defined grinding programs for quick and easy recall. The user-friendly interface allows you to view training videos, user manual, and run history, which can be transferred to a computer using a thumb drive.

Purchase liquid nitrogen, extractor, and sample vials separately."

The CG-200 Freezer/Mill® makes it easy to grind delicate or unconventional materials into fine powders while preserving their integrity. Designed for small sample sizes (0.1 to 5 grams), this compact, user-friendly system ensures no thermal degradation, making it ideal for heat-sensitive metabolites, isomers, and complex molecules.

Typical applications include: DNA/RNA extraction, protein & metabolite extraction, forensic/drug testing, RoHS/WEEE, consumer product testing, materials research & medical research.

Typical samples include: plant and animal tissue, plastic and polymers, yeast, pharmaceuticals, food products, electronic components, textiles, hair, and bone.

Cryogenic cooling with liquid nitrogen keeps your samples at ultra-low temperatures, preventing heat damage. The Cole-Parmer® SamplePrep CG-200 Freezer/Mill® has one dual purpose chamber that precools and grinds samples and can hold one small grinding vial, or one microvial set. The Freezer/Mill works with various vial materials including polycarbonate and stainless steel. Since the vial is securely closed the integrity of its contents is maintained, hazardous or critical samples are easily controlled, and cross-sample contamination is eliminated.

Easy-to-use controls allow precise grinding without complicated setup. The unit pulverizes hard, brittle or temperature-sensitive materials that traditional mills struggle to process. Ideal for biological, pharmaceutical, and food applications, as well as hazardous or critical samples. The large, high-resolution touchscreen controls all paramters of the run. The interface allows you to view training videos, user manual, and run history which can be transferred to a computer using a thumb drive.

The CG-200 is built for safety and longevity. The liquid nitrogen sensor prevents damage by ensuring proper cooling during operation, shutting down the mill if the liquid nitrogen level is too low. The Cole-Parmer SamplePrep Freezer/Mill is designed for use in an open, well-ventilated workspace to avoid condensation-related issues. Cryogenic gloves and safety gear are recommended for safe handling.

Purchase liquid nitrogen, extractor and sample vials separately.

Effective September 2023, the Spex SamplePrep 6775 Freeer/Mill® has been rebranded to Cole-Parmer® SamplePrep under model number CG-200 Freezer/Mill®. All the same great features and specification with a new look.