1. Proven, conventional, or officially recognized procedures and techniques that have been in use for a considerable time
The laboratory follows established methods for quality control.
O laboratório segue métodos estabelecidos para controle de qualidade.
2. Traditional or standardized approaches that are widely accepted and practiced in a particular field or discipline
We prefer to use established methods rather than experiment with new approaches.
Preferimos usar métodos estabelecidos em vez de experimentar novas abordagens.