Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Rubbing Alcohol 70 %: Isopropanol Made Up with Water
Isopropyl rubbing alcohol is about 70 % pure isopropanol by volume in water, used to clean and disinfect. Measure the 99 % alcohol, add water up to the full volume, and bottle it. It is volatile and flammable: keep it away from flames.
The picture: our diagram, 707 mL of 99 % isopropanol made up to 1000 mL.
Oqalayo
Ten minutes
Imiyalelo
1
1
Measure the alcohol
Measure the alcohol
Measure 707 mL of 99 % isopropanol into the cylinder (for 1 litre; other sizes in step 4). No flames nearby.
Izinto zokwakha zalesi sinyathelo:
Utshwala Be-isopropyl 99 %0.707 ilithaAmathuluzi adingekayo:
Isilinda sokukala2
2
Make up to volume
Make up to volume
Add water up to the 1000 mL mark. Mixing shrinks the volume a little, so stir and top up to the mark again.
Izinto zokwakha zalesi sinyathelo:
Amanzi Acwengisisiwe0.3 ilithaAmathuluzi adingekayo:
Isilinda sokukala3
3
Bottle it
Bottle it
Pour it through the funnel into a clean bottle, close it and label it.
Amathuluzi adingekayo:
Ifanela Lengilazi Elinomlomo
Ibhodlela lengilazi (elicwebile)4
4
How much isopropanol
How much isopropanol
Ilayisha incwadi ye-Jupyter…
Izinto
2- 0.707 ilithaIsibambeli
- 0.3 ilithaIsibambeli
Amathuluzi Adingekayo
3- Isibambeli
- Isibambeli
- Isibambeli
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