Kjeldahl flask made of heat-resistant glass
The mouth is designed with a thick rim that is resistant to cracking. Additionally, its shape promotes the evaporation of contents during heating.
Kjeldahl flasks are available in sizes ranging from 30ml to 500ml. 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, offering 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 typically used as bubble-reducing agents in ordinary 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.
- Company：ハリオサイエンス
- Price：Less than 10,000 yen
