Ray Tremlett, who died on September 23, aged 83, was an expert in dyeing technology for the leather industry.

After graduating with a BSc from Leeds University, he first worked for the Danish Tanners Research Association. He later joined Ciba Clayton in the UK, a company making dyestuffs, textile auxiliaries, chemicals and leather oils, where he was responsible for product and process development, especially for dye ranges and compatibility studies. 

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