From Wikipedia, the free encyclopedia. Ammonium aluminium sulfate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH 4)Al(SO 4) 2 Â·12H 2 O. It is used in small amounts in a variety of niche applications.The dodecahydrate occurs naturally as the rare mineral tschermigite.rom Wikipedia, the free encyclopedia. Ammonium aluminium sulfate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH 4)Al(SO 4) 2 Â·12H 2 O. It is used in small amounts in a variety of niche applications.
A basic bench press bench alone will cost from 100$ and if you want powerlifting style bench then it may cost you even 700-800$. This cost does not include the cost of benching rod or weights. A basic bench press bench alone will cost from 100$ and if you want powerlifting style bench then it may cost you even 700-800$.
Other Options. While the standard weight of a bench press bar is 45 pounds, there are options for those who are not able to complete the exercise with the standard bar. Another bar that is commonly seen in fitness gyms is 33 pounds and offers a thinner grip section for those with smaller hands.hoto Credit Barbell image by Semfamily from Fotolia.com. The bench press exercise is a very common choice for those who are interested in effectively developing their chest, shoulders and triceps muscles, and the exercise is usually performed with a barbell.