A glass or glass-like substrate having a contact-killing, non-leaching antimicrobial
effective amount of metal ions contained in at least one surface region thereof,
and having a color of b*+6 on the CIE international color scale is disclosed.
The antimicrobial substrate is prepared by providing a metal ion precursor comprising
at least one source of antimicrobial effective metal ions dissolved or otherwise
dispersed in a carrier material; depositing the precursor onto at least one surface
of the substrate; drying the substrate at a temperature of from about 20
C. to about 105 C. by removing volatiles from the metal ion precursor; and
heating the resulting substrate at a temperature of about 600-650 C. for
2-5 min. to exchange or otherwise implant antimicrobial metal ions from the precursor
and into the glass or glass-like substrate.
