One Isosbestic Point Pin. Physical Chemistry Laboratory Series.
Craft: Hard Enamel
Material: Zinc Alloy, Gold Plating
Dimension: 2.2 x 3.3 cm
Attachment: 2 Rubber Clutches
Isosbestic Point Badge Pin - Metallic Hard Enamel
Isobestic Point Pin. Material is hard enamel on zinc alloy (gold plating) metal with two pink rubber pin backs.
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