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Color chart displaying various shades of pink labeled as standard colors

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Color chart showing standard color samples with varying shades of pink

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Image showing standard color chart for nitrate-nitrogen measurement

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Image showing a standard color chart with shades of purple and a test tube

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Standard color chart for nitrate-nitrogen concentration with test tube

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Color chart displaying various shades of pink labeled as standard colors

モノヒョー

Image showing standard color chart for nitrate-nitrogen measurement

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Standard color chart for nitrate-nitrogen concentration with test tube

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Color chart showing standard color samples with varying shades of pink

モノヒョー

Image showing a standard color chart with shades of purple and a test tube

モノヒョー

Color chart displaying various shades of pink labeled as standard colors

モノヒョー

Image showing a standard color chart with shades of purple and a test tube

モノヒョー

Color chart showing standard color samples with varying shades of pink

モノヒョー

Standard color chart for nitrate-nitrogen concentration with test tube

モノヒョー

Image showing standard color chart for nitrate-nitrogen measurement

モノヒョー