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Term: chemical: class B

Objects

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six magesium sulfate crystals in a stoppered glass test tube

dated 1927

three ammonia zinc sulfate crystals in a stoppered glass test tube

dated 1927

Stoppered Glass Bottle of Naphthol Red 3G

circa 1890

stoppered glass bottle of unidentified red dyestuff

circa 1900

small stoppered test tube of strontium sulfate

circa 1900