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Papier de tournesol Photos ❘ Science Photo Library

Colour spreading on litmus paper
13497669 - Colour spreading on litmus paper
Colour spreading on litmus paper
13497667 - Colour spreading on litmus paper
Litmus Test for Lemon Acidity
12651779 - Litmus Test for Lemon Acidity
Litmus Test for Lemon Acidity
12651777 - Litmus Test for Lemon Acidity
Litmus Test for Lemon Acidity
12651778 - Litmus Test for Lemon Acidity
Colour spreading on litmus paper
13497668 - Colour spreading on litmus paper
Litmus Test for Lemon Acidity
12651782 - Litmus Test for Lemon Acidity
Litmus Test for Lemon Acidity
12651781 - Litmus Test for Lemon Acidity
Litmus Test for Lemon Acidity
12651776 - Litmus Test for Lemon Acidity
Urine sample
12422138 - Urine sample
Different coloured strips of litmus paper
11676786 - Different coloured strips of litmus paper
Testing pH of soils
11726050 - Testing pH of soils
Test for chlorine
11732035 - Test for chlorine
Female doctor testing urine
12380307 - Female doctor testing urine
Female doctor testing patient's urine
12380305 - Female doctor testing patient's urine
Litmus Paper
12041994 - Litmus Paper
pH Indicators
12043094 - pH Indicators
Female doctor testing urine
12380309 - Female doctor testing urine
Female doctor testing urine
12380308 - Female doctor testing urine
pH of Toilet Bowl Cleaner
12043417 - pH of Toilet Bowl Cleaner
pH indicators,artwork
11672356 - pH indicators,artwork
Acid test: blue litmus paper turns red
11519773 - Acid test: blue litmus paper turns red
Litmus test for amine solution
11520207 - Litmus test for amine solution
Female doctor testing urine
12380306 - Female doctor testing urine
pH of Toilet Bowl Cleaner
12043416 - pH of Toilet Bowl Cleaner
Bicarbonate of soda toothpaste test
11520230 - Bicarbonate of soda toothpaste test
Litmus paper test
11519844 - Litmus paper test
Litmus paper test
11519853 - Litmus paper test
Paper chromatography
11997214 - Paper chromatography
Buffer Solution
12003044 - Buffer Solution
PH of Orange and Lemon
12002956 - PH of Orange and Lemon
Buffer solution to maintain a constant alkalinity
12073577 - Buffer solution to maintain a constant alkalinity
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