The 250 ml wide‑mouth storage bottle
Laboratory and sample storage — storing liquids, reagents, chemicals, or biological samples. Wide‑mouth bottles are often used in labs because the larger opening makes filling, pouring, or removing solids/viscous liquids easier.
Storing powders or granular materials — powders, granules, small solids (e.g. salts, granulated chemicals), because wide mouth allows easier scoop-in and retrieval.