Glycerol Stocks for Bacteria: Preparation of long-term freezer stocks of Escherichia coli and other bacteria by diluting 50% (v/v) Glycerol to 10–25% final before freezing at −80°C.

Cryopreservation of Cells and Microorganisms: Use as a cryoprotectant (diluted from 50% (v/v) Glycerol) for yeasts, bacteria, and some mammalian cells to reduce ice damage during freezing.

Enzyme Storage: Stabilization of restriction enzymes, polymerases, and other proteins by storing in buffers containing up to 50% (v/v) Glycerol to remain unfrozen at −20°C.

Protein Stabilization: Addition to purification and storage buffers to prevent aggregation and denaturation of sensitive proteins.

PCR Enhancement: Inclusion of diluted 50% (v/v) Glycerol (typically 5–10% final) to improve amplification of difficult or GC‑rich templates.

Gel Electrophoresis Sample Loading: Added to samples as a density agent to ensure wells load cleanly and samples sink in agarose or PAGE gels.

Buffer Freeze Protection: Mixed into reagents to depress freezing point, enabling storage at −20°C without solidification.

Density Gradients/Cushions: Preparation of glycerol cushions or step gradients for ultracentrifugation and virus or ribosome pelleting.

Enzyme Assays: Used as an osmolyte/stabilizer in assay buffers to preserve enzymatic activity during measurements.