Pickled Red Cabbage as a pH indicator!
YouTube video by Gardenindicators
youtu.be
May 9, 2026 at 10:50 AM
#gardenindicators has been around a while now. I’ve certainly learned a lot from it. @crocodilechemi1.bsky.social and @AlchemistAngus (not on Bsky) have put a huge amount of effort into reviewing some key uses of anthocyanins in teaching pubs.rsc.org/en/content/a... I can’t thank them enough!
Colourful chemistry of anthocyanins: a tutorial review of applications of anthocyanins in school and university teaching
The flowers, fruits and vegetables that we encounter in everyday life provide an opportunity for discussion of key chemistry concepts in school and university level chemistry. The rich variety of colo...
pubs.rsc.org
March 27, 2026 at 7:48 PM
#gardenindicators has been around a while now. I’ve certainly learned a lot from it. @crocodilechemi1.bsky.social and @AlchemistAngus (not on Bsky) have put a huge amount of effort into reviewing some key uses of anthocyanins in teaching pubs.rsc.org/en/content/a... I can’t thank them enough!
As we know from Vogue, 2026 is the year of Cabbage.
My colleague Marko and I devised this simple electrolysis demo using anthocyanins in cabbage to explore how we make chlorine and lye from salt.
Check out the open access resource on GCTLC.
gctlc.org/practical-an...
#gardenindicators
My colleague Marko and I devised this simple electrolysis demo using anthocyanins in cabbage to explore how we make chlorine and lye from salt.
Check out the open access resource on GCTLC.
gctlc.org/practical-an...
#gardenindicators
March 24, 2026 at 12:25 PM
As we know from Vogue, 2026 is the year of Cabbage.
My colleague Marko and I devised this simple electrolysis demo using anthocyanins in cabbage to explore how we make chlorine and lye from salt.
Check out the open access resource on GCTLC.
gctlc.org/practical-an...
#gardenindicators
My colleague Marko and I devised this simple electrolysis demo using anthocyanins in cabbage to explore how we make chlorine and lye from salt.
Check out the open access resource on GCTLC.
gctlc.org/practical-an...
#gardenindicators
Just been to the supermarket and spotted some ready prepared red cabbage indicator #Gardenindicators
January 25, 2026 at 5:59 PM
Just been to the supermarket and spotted some ready prepared red cabbage indicator #Gardenindicators
Saw this and thought of the #ChemSky #GardenIndicators crowd ☺️🧪
Indian farmers turn to 'magical' butterfly pea flower
Indian farmers are turning to butterfly pea flower which is in demand for its bright blue colour.
www.bbc.co.uk
January 6, 2026 at 7:48 PM
Saw this and thought of the #ChemSky #GardenIndicators crowd ☺️🧪
Seasonal #Gardenindicators time. The bramble whiskies are ready! There’s a sweet one (made from Grants) and a more fiery one (made from famous grouse). Both tasty 🙂
November 30, 2025 at 6:01 PM
Seasonal #Gardenindicators time. The bramble whiskies are ready! There’s a sweet one (made from Grants) and a more fiery one (made from famous grouse). Both tasty 🙂
#gardenindicators in action
Here’s the recipe:
Holiday Synthesis: Cranberry Lime Pie
www.science.org
November 27, 2025 at 2:57 AM
#gardenindicators in action
#gardenindicators in action: testing to see if our student’s soap is safe for the skin
#gardenindicators in print:
How to find acids with flowers: Robert Boyle’s ‘syrrup of violets’ and the chemistry of color indicators
link.springer.com/article/10.1...
#gardenindicators in print:
How to find acids with flowers: Robert Boyle’s ‘syrrup of violets’ and the chemistry of color indicators
link.springer.com/article/10.1...
November 7, 2025 at 12:33 PM
#gardenindicators in action: testing to see if our student’s soap is safe for the skin
#gardenindicators in print:
How to find acids with flowers: Robert Boyle’s ‘syrrup of violets’ and the chemistry of color indicators
link.springer.com/article/10.1...
#gardenindicators in print:
How to find acids with flowers: Robert Boyle’s ‘syrrup of violets’ and the chemistry of color indicators
link.springer.com/article/10.1...
It isn’t all #Gardenindicators in our lab, we’ve been making our own phenolphthalein’s too. They are different colours and pleasingly, all worked well in an acid/base titration. #Chemsky
October 15, 2025 at 7:12 PM
It isn’t all #Gardenindicators in our lab, we’ve been making our own phenolphthalein’s too. They are different colours and pleasingly, all worked well in an acid/base titration. #Chemsky
Further tinned fruit results today, mixing the juice from tinned peaches with bramble extract gives a beautiful purple colour! The left glass contains a mixture of bramble juice, tinned peach juice and water. The right glass contains diluted bramble juice. #Gardenindicators #Chemsky
October 5, 2025 at 7:47 PM
Further tinned fruit results today, mixing the juice from tinned peaches with bramble extract gives a beautiful purple colour! The left glass contains a mixture of bramble juice, tinned peach juice and water. The right glass contains diluted bramble juice. #Gardenindicators #Chemsky
You have also inspired a new gin and tonic colour! #Gardenindicators
September 20, 2025 at 7:40 PM
You have also inspired a new gin and tonic colour! #Gardenindicators
@manhattanscientist.bsky.social has inspired a nice #Gardenindicators experiment! The samples below, all contain Hibiscus tea. L to R, tea, tea with pineapple juice from a tin can, tea with acetic acid and tea with HCl. Those tin ions make a lovely purple complex with anthocyanins!
September 19, 2025 at 7:07 PM
@manhattanscientist.bsky.social has inspired a nice #Gardenindicators experiment! The samples below, all contain Hibiscus tea. L to R, tea, tea with pineapple juice from a tin can, tea with acetic acid and tea with HCl. Those tin ions make a lovely purple complex with anthocyanins!
Spontaneous breakfast-inspired mini #GardenIndicators #pH investigation!
Any ideas what I’ve used?!?!
#ScienceIsEverywhere #DrJoScience #BeCurious
Any ideas what I’ve used?!?!
#ScienceIsEverywhere #DrJoScience #BeCurious
September 19, 2025 at 9:24 AM
Spontaneous breakfast-inspired mini #GardenIndicators #pH investigation!
Any ideas what I’ve used?!?!
#ScienceIsEverywhere #DrJoScience #BeCurious
Any ideas what I’ve used?!?!
#ScienceIsEverywhere #DrJoScience #BeCurious
This seems to becoming a tradition for the end of August. Bramble whisky round 2 now in progress. A double batch this time as well. #Gardenindicators I look forward to the end of November when they will be ready. One jar contains famous grouse, the other is grant’s triple wood blend. #chemsky
August 31, 2025 at 9:55 PM
This seems to becoming a tradition for the end of August. Bramble whisky round 2 now in progress. A double batch this time as well. #Gardenindicators I look forward to the end of November when they will be ready. One jar contains famous grouse, the other is grant’s triple wood blend. #chemsky
Blackberries! Loads of them! Going back tomorrow for more. Will make a crumble and jam. Have a plan for some colorimetry too😀#GardenIndicators
August 30, 2025 at 7:19 PM
Blackberries! Loads of them! Going back tomorrow for more. Will make a crumble and jam. Have a plan for some colorimetry too😀#GardenIndicators
Plenty of beautiful
Hydrangeas around St Andrews now. Some will hopefully get used as #Gardenindicators in teaching next year.
Hydrangeas around St Andrews now. Some will hopefully get used as #Gardenindicators in teaching next year.
August 14, 2025 at 6:23 PM
Plenty of beautiful
Hydrangeas around St Andrews now. Some will hopefully get used as #Gardenindicators in teaching next year.
Hydrangeas around St Andrews now. Some will hopefully get used as #Gardenindicators in teaching next year.
One for any #Gardenindicators fans.
August 14, 2025 at 6:13 PM
One for any #Gardenindicators fans.
It has been a while, but another #Gardenindicators video is now ready. This one shows a cheap and cheerful way to extract blackberries, works for raspberries too. youtu.be/HIV1Tgpa1-g?...
Anthocyanin Extraction: Blackberries (Brambles)
YouTube video by Gardenindicators
youtu.be
May 19, 2025 at 8:14 PM
It has been a while, but another #Gardenindicators video is now ready. This one shows a cheap and cheerful way to extract blackberries, works for raspberries too. youtu.be/HIV1Tgpa1-g?...
Here’s the pH profile of a small purple viola petal used as a cake decoration. I resisted the temptation to eat it, instead it gave itself to science! #GardenIndicators
March 15, 2025 at 10:58 AM
Here’s the pH profile of a small purple viola petal used as a cake decoration. I resisted the temptation to eat it, instead it gave itself to science! #GardenIndicators
A colourful and quick experiment with tinned pineapple juice youtu.be/n62zByID52I?si…#Gardenindicatorsr#Snackindicatorsr#Chemskyky
Colour changing fruit juice from a tin can!
YouTube video by Gardenindicators
https://youtu.be/n62zByID52I?si…
March 11, 2025 at 7:03 AM
A colourful and quick experiment with tinned pineapple juice youtu.be/n62zByID52I?si…#Gardenindicatorsr#Snackindicatorsr#Chemskyky
I got a nice #Gardenindicators gift this week from
@AlchemistAngus. A can of crushed pineapple! The anthocyanins in blackberry extract can be used to detect dissolved tin(II) ions in the pineapple juice. The anthocyanin/tin complexes give a lovely purple colour! #Chemsky
@AlchemistAngus. A can of crushed pineapple! The anthocyanins in blackberry extract can be used to detect dissolved tin(II) ions in the pineapple juice. The anthocyanin/tin complexes give a lovely purple colour! #Chemsky
March 7, 2025 at 10:14 AM
I got a nice #Gardenindicators gift this week from
@AlchemistAngus. A can of crushed pineapple! The anthocyanins in blackberry extract can be used to detect dissolved tin(II) ions in the pineapple juice. The anthocyanin/tin complexes give a lovely purple colour! #Chemsky
@AlchemistAngus. A can of crushed pineapple! The anthocyanins in blackberry extract can be used to detect dissolved tin(II) ions in the pineapple juice. The anthocyanin/tin complexes give a lovely purple colour! #Chemsky
March 4, 2025 at 3:39 PM
A Christmas tradition and the 3rd #GardenIndicators Christmas edition - Red Cabbage! Such a wonderful range of colours at different pH. Merry Christmas everyone 🎄
December 25, 2024 at 7:40 AM
A Christmas tradition and the 3rd #GardenIndicators Christmas edition - Red Cabbage! Such a wonderful range of colours at different pH. Merry Christmas everyone 🎄
The second #GardenIndicators Christmas edition shows the pH profile of poinsettia bracts. Just look at the cheeky pink and purple in the RGB plot!
December 24, 2024 at 4:48 PM
The second #GardenIndicators Christmas edition shows the pH profile of poinsettia bracts. Just look at the cheeky pink and purple in the RGB plot!
#GardenIndicators Christmas edition! I bought the cranberries purely for the science and now I’ve got to make cranberry sauce from scratch! Here’s their pH profile and the RGB plot of the acidified extract neutralised with 0.1M NaOH, then adding 2M NaOH
December 22, 2024 at 11:49 AM
#GardenIndicators Christmas edition! I bought the cranberries purely for the science and now I’ve got to make cranberry sauce from scratch! Here’s their pH profile and the RGB plot of the acidified extract neutralised with 0.1M NaOH, then adding 2M NaOH