For 50gram scale,take bigest balloon you find,size about 100cm 30inc,shake every 10-15 min,reaction time 2h.500 mil methanol 250mil 70%Luk,50gr p2np,60gram aliuminium 3cm size,very import,you must cut aliuminium the same size,,do not crush aliuminium into balls!! Then reaction done,all aliuminium disolves,you need have 2x 20l plastic tanks,one for mercury soliution,another for reaction,take mini 12v water pump,and fill up reaction tank to cover all aliuminium for amalgam,20gram mercury ll chloride,20liter water.10min wait,and pump out mercury soliution,then add p2np soliution,put ballon,you need hold on ballon with hand,and shake.You must Have gas mask.!!And use gloves,do it outside.