# Products diluted 1:30~1:100

> 3 products. A curated index over the authoritative English catalogue (for AI/search agents).

- [PreWash B](https://findyourdetail.io/products/koch-chemie/prewash-b) — Koch Chemie · pH alkali (13) · dilution 1:30~1:100
- [PreWash express](https://findyourdetail.io/products/koch-chemie/prewash-express) — Koch Chemie · pH alkali (13) · dilution 1:30~1:100
- [PurePreCleaner](https://findyourdetail.io/products/koch-chemie/pureprecleaner) — Koch Chemie · pH alkali (14) · dilution 1:30~1:100