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$.
1 A basic potting bench starts around $50-$250, but can cost $1,200 or more. 2  For details, see How Much Does a Potting Bench Cost. 3  Basic greenhouse shelving can run $20-$200 or more in plastic or metal, and a thermometer can cost $5-$50 or more. Cooling can be provided by a simple fan ($10-$50 or more) or by covering the roof with shade cloth or roller shades (starting around $25-$100, but going as high as $1,000 or more). 2  A basic potting bench starts around $50-$250, but can cost $1,200 or more. 3  For details, see How Much Does a Potting Bench Cost.