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orthophenanthroline
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ferrous orthophenanthroline reagent.
ferro-orthophenanthrolin-reagens.

orthophenanthroline solution, c12h8n2, 0,5 % in 96 % vol alcohol.
0,5 % ortophenantrolinopløsning (c12h8p2, h2o) i 96 % vol. alkohol.

add four drops of the orthophenanthroline reagent (3.5) to the contents of the 'measurement' flask.
til målekolben sættes fire dråber orthophenanthrolin-reagens (3.5).

add four drops of the orthophenanthroline reagent (paragraph 3.5) to the contents of the ‘measurement’ flask.
til kolben med måleprøven sættes fire dråber orthophenanthrolin-reagens (3.5).

dissolve 0,695 g of ferrous sulphate, feso4 · 7 h2o, in 100 ml of water, and add 1,485 g of orthophenanthroline monohydrate, c12h8n2 · h2o.
0,695 g ferrosulphat (feso4, 7 h2o) opløses i 100 ml vand, og der tilsættes 1,485 g ortho-phenanthrolinmonohydrat (c12h8n2, h2o).

dissolve 0,695 g of ferrous sulphate, feso4, 7 h2o, in 100 ml of water, and add 1,485 g of orthophenanthroline monohydrate, c12h8n2, h2o.
0,695 g jern(ii)sulfat (feso4, 7 h2o) opløses i 100 ml vand, og der tilsættes 1,485 g orthophenanthrolinmonohydrat (c12h8n2, h2o).