Abstract: An elapsed time indicator (2), comprises an activator arrangement (25) comprising a fluid reservoir (20) and a conduit (22) configured to provide a predetermined flow rate of fluid (21) along the conduit (22). The elapsed time indicator (2) further comprises a visual display arrangement (18) configured to change appearance on exposure to the fluid (21). The conduit (22) connects the fluid reservoir (20) to the visual display arrangement (18). The activator arrangement (25) is configured to release fluid (21) from the fluid reservoir (20) in response to an activation event to permit the fluid (21) to flow.

Abstract: An elapsed time indicator (2), comprises an activator arrangement (25) comprising a fluid reservoir (20) and a conduit (22) configured to provide a predetermined flow rate of fluid (21) along the conduit (22). The elapsed time indicator (2) further comprises a visual display arrangement (18) configured to change appearance on exposure to the fluid (21). The conduit (22) connects the fluid reservoir (20) to the visual display arrangement (18). The activator arrangement (25) is configured to release fluid (21) from the fluid reservoir (20) in response to an activation event to permit the fluid (21) to flow.