Moisture weighing dish, full moisture bottle, coal testing instrument for measuring internal and external moisture, weighing bottle, laboratory consumables

Used to measure the total moisture content of coal:

A cylindrical glass bottle with a ground stopper, used as a container for differential weighing of samples. Due to the presence of a grinding stopper, it can prevent the sample in the bottle from absorbing moisture and CO2 from the air, making it suitable for weighing samples that are prone to moisture absorption.

Weighing bottle is a commonly used laboratory glassware, generally used for accurately weighing a certain amount of solid. Also known as a bottle. A small glass container used for precise weighing and analysis of the sample. Generally cylindrical in shape, with a tightly sealed bottle cap with a grinding mouth.