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Re: Limewater
Posted: 11 Sep 2019, 09:40
by emma.hunt
Hi
this might be a dumb question, but I followed the instructions in 'the laboratory', so when the solution settles am I meant to decant that liquid into a bottle? or just do it now when its a milky colour?
thanks!
Re: Limewater
Posted: 11 Sep 2019, 10:12
by Labbie
When the milky solution has settled down, pour a very small amount into a small beakers, get a straw and BLOW into the clear liquid, it will turn milky, or cloudy that is a test to see if it is ready to use. The teacher should know, that once you have invented it or shaken it, and its settled down, not to shake it again. So we would send the whole 2.5 L bottle into class.
Re: Limewater
Posted: 11 Sep 2019, 10:32
by emma.hunt
Wonderful, thanks Labbie
Re: Limewater
Posted: 11 Sep 2019, 10:55
by Labbie
I have merge because of the limewater still, it may help.
Re: Limewater
Posted: 11 Sep 2019, 11:05
by Labbie
You are most welcome Emma.hunt
Re: Limewater
Posted: 11 Sep 2019, 11:46
by Merilyn1
Slightly different here but I do the same as Sunray and Wayne mentioned (from years ago). So I have a stock solution which is what I have made using the instructions in The Laboratory (also previously mentioned) and I have one or two working solution bottles. I carefully pour the liquid from the stock bottle into the working bottle - I stop once I see the bottom layer of calcium hydroxide start to get stirred up. I send the working solution into the class, the stock solution stays in the chem store.
If I decant any, I refill the stock bottle with water, give it a shake and let it settle again before using.
Re: Limewater
Posted: 11 Sep 2019, 12:37
by remlap12
Merilyn1 wrote: ↑11 Sep 2019, 11:46
Slightly different here but I do the same as Sunray and Wayne mentioned (from years ago). So I have a stock solution which is what I have made using the instructions in The Laboratory (also previously mentioned) and I have one or two working solution bottles. I carefully pour the liquid from the stock bottle into the working bottle - I stop once I see the bottom layer of calcium hydroxide start to get stirred up. I send the working solution into the class, the stock solution stays in the chem store.
If I decant any, I refill the stock bottle with water, give it a shake and let it settle again before using.
I do the same, Merilyn.
Re: Limewater
Posted: 05 Mar 2024, 09:30
by RosalieL
I'm trying to set up my lime water still... Does anyone know what size rubber bung with 2 holes fits in the top of a winchester? I have ones that are too big or two small. I did find a cork one that fits (no holes) but none of the measurements match any of the 2 hole rubber bung options I've found online. How hard is it to put your own holes in with a cork borer? I think the cork would disintegrate because the holes would be too close together at the bottom. The diameter of the top of the winchester is about 28mm.
Re: Limewater
Posted: 05 Mar 2024, 11:38
by RosalieL
RosalieL wrote: ↑05 Mar 2024, 09:30
I'm trying to set up my lime water still... Does anyone know what size rubber bung with 2 holes fits in the top of a winchester? I have ones that are too big or two small. I did find a cork one that fits (no holes) but none of the measurements match any of the 2 hole rubber bung options I've found online. How hard is it to put your own holes in with a cork borer? I think the cork would disintegrate because the holes would be too close together at the bottom. The diameter of the top of the winchester is about 28mm.
Never mind - I found the right size sold individually at wiltronics, of all places!