Limewater

[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!

[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.

[emma.hunt]

Wonderful, thanks Labbie

[Labbie]

I have merge because of the limewater still, it may help.

[Labbie]

You are most welcome Emma.hunt

[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.

[remlap12]

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.