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GIPhotoStock Images 
COVID-19 collection kit
Rights Managed 
COVID-19 home collection kit
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COVID-19 home collection kit
Rights Managed 
Limescale
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Potassium
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Potassium burning
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Potassium burning
Rights Managed 
Potassium
Rights Managed 
Potassium burning
Rights Managed 
Potassium burning, 1 of 4
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Potassium burning, 3 of 4
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Potassium burning, 2 of 4
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Reduction of copper
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Potassium burning, 4 of 4
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Reduction of copper, 2 of 4
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Reduction of copper, 1 of 4
Rights Managed 
Oxidation of glycerin by potassium permanganate, 3 of 4
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Reduction of copper, 3 of 4
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Reduction of copper, 4 of 4
Rights Managed 
Oxidation of glycerin by potassium permanganate
Rights Managed 
Oxidation of glycerin by potassium permanganate, 2 of 4
Rights Managed 
Oxidation of glycerin by potassium permanganate, 1 of 4
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Limescale
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Oxidation of glycerin by potassium permanganate, 4 of 4
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Cadmium hydroxide precipitate
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