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.
Concentration of the particles of purified water; REO Institution, Inc, Sendai, Japan. A, Particle size distribution chart = average of 5 measurements. B, Vertical axis = particle concentration (number of particles × 10*/mL)/horizontal axis = particle size (nm). C, Red colour = mean error
