Plant pigments as indicators Principle To determine the pH (acidity or alkalinity) of an aqueous solution you can use pH meters or indicators. When using indicators the most known indicators are phenolphthalein or litmus. pH indicators can also be extracted from flowers or some vegetables such as red cabbage juice. In this experiment students examine various natural substances (for example beetroot or red cabbage) and test whether ingredients of these natural products can be used as indicators for acids.
Learning objectives
- How to use indicator to measure pH value
- Natural products as pH indicator
Benefits - Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
- Experiment is part of a complete solution set with experiments for the topic acids, alkalis and salts matched with international curriculum: all topics are covered
Scope of delivery |
Denaturated alcohol (spirit for burning), 1000 ml
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31150-70
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1
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Sea sand, purified 1000 g
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30220-67
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1
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Support base, variable
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02001-00
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1
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Stand rods, stainless steel, various sizes
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02059-00
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1
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Boss head
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02043-00
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1
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Mortar w. pestle, 70ml, porcelain
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32603-00
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1
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Knife, stainless
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33476-00
|
1
| |
Funnels, plastic, various sizes
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47318-00
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1
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Graduated cylinder, 10 ml, plastic
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36636-00
|
1
| |
Beakers, Boro, low form, various sizes
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46054-00
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1
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Test tube rack, wood, for 6 tubes d= 22mm
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MAU-20042200
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1
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Universal clamp
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37715-01
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1
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Protecting glasses, clear glass
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39316-00
|
1
| |
Scissors, l = 110 mm, straight, point blunt
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64616-00
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1
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Test tube brush w. wool tip,d20mm
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38762-00
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1
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Laboratory pen, waterproof, black
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38711-00
|
1
| |
Erlenmeyer flask, stopper bed, 250 mlSB 29
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MAU-EK17082306
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2
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Round filters, 100 pcs., various sizes
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32977-04
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1
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Test tube, laboratory glass, various lengths, 100 pcs.
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37658-10
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1
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Spatula, powder, steel, l=150mm
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47560-00
|
1
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Service
