Experiment tools:glass cover is well sealed and can be used repeatedly after cleaning,Glass Colorimetric Tube
Glass colorimetric tube:solid glass cover design, for more stable placement without leaking,Experiment Tools
Colorimeter tube for laboratory:made of solid thick glass and have a good feeling reusable and solid quality, not easily broken,Glass Colorimetric Tube
Colorimetric cylinder:suitable for beginners or professional use, also the students, convenient classroom experiment tools,Glass Colorimetric Tube
Color comparison tube:made of glass material, , safe and odorless,Glass Colorimetric Tube