The Retort Check is the single best means of providing retainable evidence of batch retort processing in steam or raining water canning retorts. These indicator cards use unique inks that change colour fully only when specific parameters of time, temperature and steam quality are met.
Unlike the binary (and almost instant) colour change of autoclave tape that is disposed after use, these canning indicators enable operators to match indicator tags with a specific time and temperature combination to each thermal process, providing an extra level of warning in the event of a process failure.
Suitable for static or rotary retort systems, the cards enable food processing facilities to maintain permanent records and ensure compliance with federal and governmental regulations. Used and trusted by the world's largest food manufacturers as part of their HACCP system implementation and maintenance, and essential for demonstrating compliance in retailer audits of food canning establishments around the world.