INTERNATIONAL STANDARD I NTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXWHAPOiX4AR OPTAHI I 3AUUff I ,0 CTAH~APTI 1 3AWfH ORGANISATION INTERNATIONALE DE NORMALISATION Cryol i te (natural and arti fi[.]
Trang 1INTR ATIO A L O G NIZATIO FO STAD RIZATIO MEXWH PiX4A O TAI3AUf I0 CTA~ATI13AWfH.O G NISTIO INT RATIO AL DE N RMALISTIO
F irst edition - 19 2-12-15
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Desc riptors : meta llferou minera ls, aluminium ores, c ry olte, c emica l a na ly sis, gra v imetric a naly sis, determina tion of content a luminium
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Trang 2IS 0 (h internatio al Organiza tio for Sta ndardiza tio ) is a worldwid fe eratio
g v ernm enta l a nd n n-g v ernm enta l, in la is n with ISO, a ls ta ke p art in th work
Belgium
Italy
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Neth rla nd
S witz rla nd
Tha ilan
Turkey
U.S S R
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In ia
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0 interna tiona l Orga niza tion for S ta nda rdiza tion, 192 l
P rinted in S witzerlan
Trang 35.16 Ne ta l re , 0.5 g/i ethan lc s lutio
7 1 T est porio
sample (s e 2.3 of ISO/R 1619)
slutio (5.8) a nd disc ard th f ilta te
ac id slutio (5.9) a nd 10 ml of th ta rtaric ac id s lutio
70 ‘C f or 3 min
7.2.4 F ilta tio ,
aluminium ti(q in ln-8-ox id )
a t 13 “C for 2 h in a n oven v ntia te by c onvec tio
Remov e th c ruc ible fom th o e , plac e it in a d sic c ator
tha t th mas is c on tant
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Trang 49 T ST REPORT
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Standard, or re ard d as op tio al
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