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$.
One project I never had the chance to tackle last year was adding some extra outdoor seating, and I knew a simple wood bench was exactly what I wanted to finish the space. With a simple design and just a few supplies needed, this easy DIY Outdoor Bench can be made for around $16! Let me show you exactly how I made it: Bench Dimensions: 4 ft long x 12 3/4â³ wide x 17 3/4â³ high. Supplies: 1 â 12 foot 1 x 4 (cut into 3 â 4 foot pieces).