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.
Types of Alum. 1  Potassium Alum: Potassium alum is also known as potash alum or tawas. 2  Soda Alum: Soda alum has the formula NaAl(S O4)2Â·12H2O. 3  Ammonium Alum: Ammonium alum has the formula N4Al(SO4)2Â·12H2O.