The watch glass is mainly used in scientific learning, chemistry experiments, professional laboratories, and homes, such as beaker covers, temporary storage of liquid and solid samples, corrosive substances weighing, paint mixing, etc. It also can be an evaporation dish or dustproof cover.

Specification
Material: Glass
Color: Transparent
Diameter: 50mm/2", 90mm/3.5", 120mm/4.7", "
Thickness: 2mm/0.08''
Package List: 3Pack x Watch Glass

Advantage
Our watch glass is made of high-transparency glass that allows for clear observation of liquid changes and experimental results while ensuring durability. It seamlessly fits with various chemical containers, providing excellent sealing and dustproof capabilities. Glass construction offers corrosion resistance, maintains material purity, and promotes efficient evaporation. The glass is also designed with durability, featuring smooth edges and rounded curvature for safe handling.

Instruction
1. Before use, the watch glass needs to be cleaned and dried to effectively ensure the accuracy of experimental results.
2. Clean and dry the watch glass promptly after use to avoid the residue of experimental substances and affect use.

NOTE
1. The watch glass cannot be heated directly by fire.
2. Please check the size before purchasing. Select the watch glass of the corresponding size according to the diameter of the instrument. It is recommended to choose a watch glass that is 1cm larger than the diameter of the instrument for easier use.