Phenolphthalein solution into which a drop of potassium hydroxide is dropped, acid-base-titration, during the quality assurance at a company producing natural cosmetics, Arlesheim, Switzerland, Europe

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Creative#:

TOP22470259

Source:

達志影像

Authorization Type:

RM

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須由TPG 完整授權

Model Release:

No

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No

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No

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