What Do You Think? Answers!  

An ultra-cold freezer, use a DDL with a probe designed specifically to measure ultra-cold temperatures

TRUE If storing vaccine in an ultra-cold freezer, use a DDL with a probe designed specifically to measure ultra-cold temperatures. 

A refrigerator, use a DDL to monitor storage unit temperatures once a week

False If using a DDL, check and record the minimum and maximum temperatures at the start of each workday. If the DDL doesn’t read min/max temperatures, check and record the current temperature at the start and end of each workday.