Hydrogenics Corp. designs, develops and manufactures hydrogen generation and fuel cell products based on water electrolysis technology and proton exchange membrane technology. It operates through 2 segments: OnSite Generation and Power Systems.
The noun âalumnusâ means a male graduate or former student of a particular university, college, or school. The noun âalumnaâ means a female graduate or former student of a particular university, college, or school. The noun âalumniâ means male graduates or former students of a particular university, college, or school. The noun âalumnaeâ means female graduates or former students of a particular university, college, or school. Many colleges and universities use âalumniâ to refer to males and females.
Potassium alum is the common alum of commerce, although soda alum, ferric alum, and ammonium alum are manufactured. Alum has been used at least since Roman times for purification of drinking water and industrial process water.