Recognized standard
11664-4 First edition 2019-06
FDA recognition 9-127 · ISO · ObGyn/Gastroenterology/Urology
Key facts
| Recognition number | 9-127 |
|---|---|
| Designation | 11664-4 First edition 2019-06 |
| Title | Colorimetry - Part 4: CIE 1976 L*a*b* colour space |
| Standards developer | International Organization for Standardization |
| Specialty area | ObGyn/Gastroenterology/Urology |
| Date of entry | Jul 6, 2020 |
| Device classes | Class 2 |
| Scope (excerpt) | This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences. This document… |
At a glance
- None Product codes
- 1–9 FDA guidance documents
Counts are shown as ranges. Exact figures, trends and every underlying record are available in Orca1.
About FDA-recognized consensus standards
The FDA recognizes voluntary consensus standards that manufacturers can cite in premarket submissions to show conformity with specific requirements.
Source: U.S. Food and Drug Administration (FDA), Recognized Consensus Standards database · Source date: