Activatable temperature indicator

An activatable temperature indicator comprising:

• a lower housing including first material with a melting point;
• an upper housing including a second material configured to change color when combined with the first material when the first material reaches the melting point;
• and
• an attachment mechanism configured to attach the upper housing to the lower housing,
• wherein attachment of the upper housing to the lower housing by the attachment mechanism places the first material in contact with the second material and holds the first material and the second material in contact when the first material reaches the melting point.

An activatable temperature indicator comprising:

• a housing including a bottom surface configured to attach to a container;
• a conductive cup located proximate to the bottom surface of the housing;
• a first indicator portion positioned within the conductive cup, the first indicator portion including a first material with a melting point;
• a second indicator portion held by the housing, the second indicator portion including a second material configured to change color when combined with the first material of the first indicator portion when the first material reaches the melting point;
• and
• an activation mechanism configured to bias the first indicator portion and the second indicator portion into contact before and after the first material reaches the melting point.