Figure 3.
Contact angle charts and colour tests: (a) mean values of the changes in the contact angle. (b) Mean values of the difference in colour changes ΔE between the digestate and the digestate not treated with ultrasound.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.