Blue Bottle Experiment

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KylaW
Posts: 9
Joined: 29 Aug 2017, 10:27
Suburb: Penrith
State/Location: NSW

Blue Bottle Experiment

Post by KylaW »

Hi,

Just wondering if anyone else has had any problems with Blue Bottles turning orange after a few hours?
Is there a way to prevent it, or is it just a matter of making up fresh every time?

Thanks,
Kyla
Matt_Coffs
Posts: 36
Joined: 29 Jul 2011, 12:21
State/Location: NSW

Re: Blue Bottle Experiment

Post by Matt_Coffs »

Mine starts out blue/clear then after a few hours it's purple/clear then finally its a yellowish colour that won't change. Use it for a few hours then make a new batch.
Merilyn1
Posts: 1065
Joined: 12 Mar 2013, 08:10
Job Title: Labbie
School: Wollondilly Anglican College
Suburb: Tahmoor
State/Location: NSW

Re: Blue Bottle Experiment

Post by Merilyn1 »

Yep, eventually they give up. I haven't made it for a while, but used to add the last "ingredient" just before we needed them.
KylaW
Posts: 9
Joined: 29 Aug 2017, 10:27
Suburb: Penrith
State/Location: NSW

Re: Blue Bottle Experiment

Post by KylaW »

Thanks! Next time I'll try that.
mtg
Posts: 371
Joined: 15 Aug 2011, 10:48
Job Title: Lab Tech
School: NDSC
Suburb: west gippsland
State/Location: VIC

Re: Blue Bottle Experiment

Post by mtg »

I think it depends on the methylene blue. I do this all the time and have had the same problem, but not all the time, so That's my guess.
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remlap12
Posts: 292
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Blue Bottle Experiment

Post by remlap12 »

I just made up the Traffic Light experiment, to test out before the teacher does it on Friday with the students, and it worked brilliantly!!
We showed it to a couple of year 11 (now 12) students and they were very impressed!
Regards
remlap12
science support and problem solver :mail:
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remlap12
Posts: 292
Joined: 26 Jun 2014, 12:23
State/Location: NSW

Re: Blue Bottle Experiment

Post by remlap12 »

I tested the Golden Rain experiment this morning too.....with brilliant results!
Regards
remlap12
science support and problem solver :mail:
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