Weighing bottle notes

The lid of the weighing bottle is matched with the ground mouth and must not be lost or messed up. The weighing bottle should be washed and dried before use. It should be washed when not in use and a small piece of paper should be placed at the grinding mouth to facilitate opening the lid.
Weighing bottles are mainly used to weigh samples of a certain mass when using an analytical balance, and can also be used to dry samples. Weighing bottles should be washed, dried, and stored in a dryer for ready use. The weighing bottle cannot be heated directly by fire, and the bottle caps cannot be interchanged. It cannot be taken directly by hand when weighing. It should be worn with finger cots or padded with clean paper.
There are two common types of weighing bottles: tall and flat. The height of tall bottles ranges from 40mm to 60mm; the height of flat bottles ranges from 40mm to 60mm. The flat type is used for measuring moisture or drying reference materials in an oven; the tall type is used for weighing reference materials and samples. Do not close the weighing bottle tightly with the ground stopper for baking. The ground stopper must be original.