At Bio Bureau, we use the Technology Readiness Level scale proposed by the European Union (Horizon 2020)

TRL Description Pillar
1 Basic Principles Oberseved Fundamental Research
2 Technology Concept Formulated Technological Research
3 Experimental Proof of Concept Technological Research
4 Technology Validation in the Lab Technological Research
5 Technology Validated in Relevant environment Product Demonstration
6 Technology demonstrated in Relevant environment Product Demonstration
7 System prototype demonstration in an operational environment Product Demonstration
8 System complete and qualified Product Demonstration
9 Actual system proved in an operational environment Competitive Manufacturing