#504800
bain as an scagáit tríd an bhfleascán a fholmhú nó trí fhleascán eile a chur ina áit, ansin nigh an t-iarmhar sa bhreogán ar dtús le tuaslagán d'aigéad sulfarach 50 % (3.2(b)), ansin le huisce driogtha nó dí-ianaithe (I.3.2.3 sna treoracha ginearálta), le tuaslagán amóinia (3.2(c)) agus sa deireadh nigh go maith le huisce driogtha nó dí-ianaithe, agus taosc an breogán trí shúchán i ndiaidh gach níocháin. (Ná déan súchán ar an mbreogán agus an níochán á dhéanamh, ach amháin tar éis don leacht a bheith taosctha trí dhomhantarraingt.) Triomaigh an breogán agus an t-iarmhar, déan iad a fhuarú agus a mheá.
Drain the filter crucible with suction; remove the filtrate by emptying or changing the filter-flask, wash the residue in the crucible successively with 50 % sulphuric acid solution (3.2(b)), distilled or deionised water (I.3.2.3 of the general instructions), ammonia solution (3.2(c)) and finally wash thoroughly with distilled or deionised water, draining the crucible with suction after each addition. (Do not apply suction during the washing operation, but only after the liquid has drained off by gravity.) Dry the crucible and residue, cool and weigh them.