The round-bottom shape is uniform in heat transfer during heating and is resistant to changes in pressure. It can be widely used for chemical reactions, stirring, heating, cooling, and more.
Round-bottom flasks are available in sizes ranging from 50ml to 2L.
H-32: HARIO-32 is a borosilicate glass with a low expansion coefficient, completed after years of research.
It is a glass that meets the "Borosilicate Glass-1" standard specified by JIS, exhibiting excellent chemical durability and heat resistance. It does not contain any heavy metals such as lead, zinc, or cadmium, nor does it use sulfurous acid or antimony, which are commonly used as bubble-reducing agents in regular glass. Due to its low expansion coefficient, it experiences minimal expansion and contraction from heating and rapid cooling, making it a glass material with high heat resistance that can withstand a temperature shock of 250 degrees.