IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Colloidal Silver: Carey Lea's Soluble Silver from Silver Nitrate
Carey Lea found in 1891 that silver nitrate reduced by ferrous sulphate in the presence of sodium citrate gives a silver that dissolves in water with a deep red colour. The 1907 US Dispensatory gives the recipe: the mixed iron and citrate solutions poured into 10 % silver nitrate, the precipitate washed by redissolving it in water and throwing it down again with absolute alcohol. Dried, it is a bluish-green mass of about 97 % silver. Salt solutions precipitate it, so use distilled water only.
The picture: our diagram.
Àárín
2 days
Ìlànà
1
1
Make the three solutions
Make the three solutions
Dissolve 10 g of silver nitrate in distilled water to 100 ml (10 %). Separately dissolve 30 g of ferrous sulphate in 100 ml of water and 36 g of crystallised sodium citrate in 140 ml of water, then mix these two.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Silver Nitrate10 g
Ferrous sulfate30 g
Sodium citrate36 g
Omi Àyọ́340 mlÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Òpó ìwọ̀n
Ìgò Gílásì Onídìí
Ọ̀pá Ìrúwé Gílásì
Ìbọ̀wọ́ Nítírílì2
2
Pour and stir
Pour and stir
Pour the iron-citrate mixture into the silver nitrate solution, stirring all the time. A dark precipitate forms.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀pá Ìrúwé GílásìÌgò Gílásì OnídìíÌbọ̀wọ́ Nítírílì3
3
Settle and wash with alcohol
Settle and wash with alcohol
Let it settle and pour off the liquid. Dissolve the precipitate in a little distilled water and throw it down again with absolute alcohol. Pour off the alcohol.
Àwọn irinṣẹ́ tí a nílò:
Ọtí àìlómiOmi Àyọ́Ìgò Gílásì OnídìíỌ̀pá Ìrúwé Gílásì4
4
Dry
Dry
Dry the precipitate in a dish at room temperature. It becomes a bluish or greenish mass.
Àwọn irinṣẹ́ tí a nílò:
Àwo Ìgbẹ5
5
Make the 1 % solution
Make the 1 % solution
Dissolve the dried silver in distilled water at 1 g to 100 ml. It dissolves deep red. Keep it in a stoppered bottle and do not mix it with salt water.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi Àyọ́500 mlÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Àwọn ìgò dígí pẹ̀lú ìdéríÀwọn ohun-èlò
4- 10 gÀyè
- 30 gÀyè
- 36 gÀyè
- 840 mlÀyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.