- Sealing bottles: suitable for beginners, students, and professionals; lightweight and portable for easy transport; convenient for sample storage and handling. - Reusable bottles with lids: compact size and light weight; easy to store and carry; reliable as reagent bottles for repeated use. - Graduated reagent bottles: well polished with smooth edges to prevent hand injury; safe to handle; wide-mouth design for easy filling, pouring, and access. - Sampling bottle: versatile for education, chemistry, research, and various applications; standard lab chemical reagent bottle for everyday use in labs and classrooms. Practical use scenarios: - In classrooms and teaching laboratories for demonstrations, storage of reagents, and student projects. - In research labs for organizing, measuring, and transferring reagents with a smooth, safe finish. - In fieldwork and on-site sampling where portability and lightweight design ease transport and on-site analysis.