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.
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basic information
HARIO's heat-resistant glass has been produced since 1972 in a "smokeless factory." This was made possible by the successful development of Japan's first direct electric melting furnace for glass, a unique technology that melts glass raw materials using electricity instead of heavy oil. This changed the common perception of glass factories at the time, which were known for their severe smoke and dust hazards, and created a workplace environment that considers both the surrounding environment and the employees working inside the factory.
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Applications/Examples of results
There is a long history of use in national public offices, research institutes, schools, and manufacturing companies. When heating, please avoid local overheating. When heating substances with low boiling points or flammable materials, please use a water bath. When handling heated glass, always use heat-resistant gloves or specialized tongs to prevent burns. When used under reduced pressure, round-bottom flasks, pear-shaped flasks, and Kjeldahl flasks are used for chemical reaction tests and reduced pressure distillation tests. However, please check for any "scratches," "distortions," or "uneven thickness" before use. Avoid using flat-bottomed flasks or triangular flasks, as their structural strength is weak.
Line up（7）
| Model number | overview |
|---|---|
| MF-50 SCI | Round bottom flask 50ml made of heat-resistant glass |
| MF-100 SCI | Round bottom flask 100ml made of heat-resistant glass |
| MF-200 SCI | Round bottom flask 200ml made of heat-resistant glass |
| MF-500 SCI | Round bottom flask 500ml made of heat-resistant glass |
| MF-1L SCI | Round bottom flask 1,000ml made of heat-resistant glass |
| MF-2L SCI | Round bottom flask 2,000ml made of heat-resistant glass |
| MF-3L SCI | Round bottom flask 3,000ml made of heat-resistant glass |
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Company information
We are a company specialized in supplying "transparent heat-resistant glass material that is resistant to corrosion and heat," manufactured by HARIO. Leveraging the know-how we have cultivated since HARIO's founding regarding heat-resistant glass, we propose heat-resistant glass materials that are "safe and secure," and have "high durability against scientific corrosion, strong acids, alkalis, and thermal applications." Our production facility is located in Koga City, Ibaraki Prefecture, and within Japan, we offer the best cost performance in the industry and can achieve short delivery times. Additionally, we strive to build long-lasting and deep business relationships so that our clients can easily consult with us anytime after delivery.