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$.
For a better quality, textured surface laminate with rolled edges, you might pay up to $300 for the same length of benchtop. Off the shelf timber benchtops start at about $500 for a 2.4mX600mm length of mid-priced hardwood.At that price, the benchtop will be sanded but not be polished and shipping will be extra.A basic engineered stone kitchen benchtop might start at around $620 per square metre for a 20mm thick, pencil-edged slab and go up to about $675 per square metre for a 40mm thick edge.More detailed styles will probably cost more. basic engineered stone kitchen benchtop might start at around $620 per square metre for a 20mm thick, pencil-edged slab and go up to about $675 per square metre for a 40mm thick edge. More detailed styles will probably cost more.