Reagent bottles - a refined detail design and craftsmanship that support long-term durability and reliable function for storage and weighing tasks in the laboratory. Experiment weighing bottles. Glass weighing vessel - constructed from glass to ensure chemical compatibility and safe handling during precise sample weighing. Simple weighing holder - made from safe, environmentally friendly glass material, designed to securely support glass weighing bottles during use. Weighing bottles - a straightforward, practical tool for accurate weighing of bottles for professional laboratory work or personal experiments; compatible with standard lab weighing procedures. Use scenarios: - Analytical lab use: precise weighing of reagents and samples for experiments and formulations. - Educational environments: classroom or training lab demonstrations of accurate mass measurement. - Home or hobby science: safe storage and accurate small-batch weighing for personal projects.