• Casein: Brooks

    Casein identification guide: casein is a thermoset semi-synthetic polymer made from milk, hardened in formaldehyde.

    Designed and painted by Edith and Alan J. Brooks

    Trelandith Studio, 151 York Road, Haxby, York

    source: Button Materials A-Z: Identification Guide
    by Jocelyn Howells

    Button Specs