Soil-testing Kit, by F. E. Becker & Co, London, Early 20th Century

Reactiometer, 'a portable apparatus for the determination of the reaction values of soils both ambulant and in the laboratories'.

Case contains:

Empty large glass bottle of distilled water,

4 glass tubes filled with coloured liquid - ph colour scales (these each have their own card box, three have lids),

'Komplex I' and 'Komplex II',

Metal tin containing Barium Sulfate,

Two amber-coloured empty glass bottles 'Komplex 1',

Empty test tubes (most have cork stoppers),

Instruction leaflet.