-s-Fototapety Vector illustration of burette with a stopcock used in analytical chemistry for titrimetry, titration. Volumetric measuring glassware isolated on a white background. Accurate dispensing of a liquid.#F421878867
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-s-Fototapety Blood test tube icon vector illustration graphic design#F180677923
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-s-Fototapety school and education icon#F208691266
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