Dye Content (by Spectrophotometry)
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>75%
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Transition Range
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pH 3.0-5.2
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Violet-Orange Red
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Solubility 0.1% (Dist. Water)
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Clear solution
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Absorption Maximum (Dist.Water) ?max
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495-499nm
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Absorptivity (A1%, 1cm in Water, at ?max)
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>520
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Loss On Drying (110°C)
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<5%
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Suitability for microscopy
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Passes test
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