"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-500 Freezer/Mill® is designed for labs that need fast, reliable cryogenic grinding for large or multiple samples. This high-throughput dual chamber laboratory mill quickly cools and pulverizes tough materials into a fine powder without thermal degradation or cross-contamination. The unit accommodates samples in the 0.1 to 100-gram range (50 gram per grinding chamber).

Typical applications include: DNA/RNA extraction, forensic/drug testing, RoHS/WEEE, consumer product testing, food safety, materials research, and medical research.

Typical samples include: animal tissue, plastic and polymers, yeast, pharmaceuticals, food products, electronic components, textiles, hair, teeth, bones, plant tissue such as cannabis, seeds, leaves and roots.

The Cole-Parmer SamplePrep CG-500 Freezer/Mill processes samples faster with the dual grinding chamber that handles up to 50 grams of sample per chamber. Each chamber holds a variety of vial sizes from large grinding vials to microvial sets. The unit includes two additional pre-cooling chambers for increased efficiency.

Continuous liquid nitrogen immersion maintains cryogenic temperatures ensuring temperature-sensitive samples remain stable, preserving sample integrity. Sealed vials prevent contamination, protecting hazardous or critical materials.

Advanced autofill liquid nitrogen system eliminates manual refilling if liquid nitrogen for effortless operation. The manual fill option is available for labs that prefer hands-on control. Proved dual electromagnetic grinding technology ensures fast and effective pulverization.

The CG-500 Freezer/Mill is built for safety and reliability. The enhanced safety features of the Cole-Parmer SamplePrep Freezer/Mill include a lid interlock system that stops the grinding process if the lid is opened mid-process. The liquid nitrogen sensor automatically shuts down the unit if liquid nitrogen levels are too low, preventing overheating. Please note, the mill must be used in an open, well-ventilated area to avoid condensation-related damage. Protective gear including cryogenic gloves and a face shield is recommended when handling liquid nitrogen.

Purchase liquid nitrogen, extractor and sample vials separately.

Effective September 2023, the Spex SamplePrep 6875D Freeer/Mill® has been rebranded to Cole-Parmer® SamplePrep under model number CG-500 Freezer/Mill®. All the same great features and specification with a new look.