It is used as a light source for an inverted microscope for cell observation. The lamp went out and I asked a contractor, but it didn't arrive easily, so I asked Mr. Monotaro. It was helpful to be able to observe immediately after arriving the next day. (Translated by machine.)
It was quite expensive to buy from a certain manufacturer, so I bought it here. Originally it was an Osram product, so other manufacturers were worried, but there was no problem because the standards are the same. (Translated by machine.)