Tough and Durable
A cup part of Kiriyama-rohto is molded in one shot by glass press.
So it has durable, strong, uniform quality.
Easy to wash
Buechner funnel has many holes leads to a drain part whose inside is hard to be seen and washed.
Kiriyama-rohto has only one hole at the center. Because its structure is simple and the inside of it is visible, it can be washed easily.
Direct connection to Bell Jar and Vacuum Flask
Kiriyama-rohto can be connected directly to a bell jar / vacuum flask by grounded glass surface (VB / SB / SU / SC types).
Rubber stopper connection type (S type) is also available.
Made from heat-resistant glass
Kiriyama-rohto is made from well reputed heat-resistant glass, HARIO H-32.
This material has excellent heat-resistant feature because of its small coefficient of the expansion and contraction that is (0-300 ℃) 32,0 x 10-7 / ℃
It is suitable for high temperature filtration with a glass fiber filter (GFP serious).
Also it is chemically stable and has low alkaline elution because its 80% of the component is silicon dioxide.
