set empty glass test tubes neatly arranged wooden rack the

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A set of empty glass test tubes is neatly arranged in a wooden rack. The test tubes Royalty Free Stock Photo

Wooden test tube rack holding empty glass tubes on transparent background Royalty Free Stock Photo

A set of empty glass test tubes is neatly arranged in a wooden rack. The test tubes are transparent and cylindrical, made of clear glass, standing upright in two rows. The wooden rack supports them securely and has a natural brown finish, displaying a grainy texture. Blurred laboratory equipment is visible in the background, suggesting a laboratory setting with a neutral-toned interior.