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Nera’s glossary. What’s in a name?

Zeology, Zeo White, Zeology Leather, zeolite… It sounds almost the same, but it’s not. We are happy to explain to you the differences: Zeology Zeology is a patented zeolite-based tanning agent developed by Nera, a subsidiary of Royal Smit & Zoon. Zeology is chrome free, heavy metal free and aldehyde free and developed as a sustainable […]

Masterclass Circularity

Insights for Fashion, Footwear and Automotive In our current economy, we take resources from the Earth, make products from them and eventually throw most of these products away as waste. With the production of fashion items, footwear and car interiors we should aim to use (and reuse) products as long as possible and reduce waste to […]

Zeology ≠ zeolite

The demand for chrome free and GDA (glutardialdehyde) free leather is bigger than ever. And Zeology – a patented modified zeolite chemistry – delivers just that. Proven superior leather and environmental performance. Ensure that you, as a brand or tannery, are working with ‘the real thing’ and not just any zeolite based tanning agent. Are you in doubt? […]

Biodegradability of Zeo White

In this article the biodegradability for Zeo White, a leather intermediate tanned with Zeology (a chrome free tanning solution based on zeolite), is described. The article focusses on Zeo White, a Zeology tanned intermediate. Testing of biodegradability of Zeo White is done for both biodisintegration (break down) and bioassimilation (uptake and growth). The biodisintegration of Zeo […]