agar gel 1% in a solution of manganese(II) sulphate and potassium sulfide
500ml tall glass jar with glass stopper containing agar gel 1% in a solution of manganese(II) sulphate and potassium sulfide, part of twenty-nine specimens and a photograph illustrating reactions in gels, British, 1910-1915
- Object Number:
- 1915-433/1
- type:
- specimen