Dipstick is a manual measurement tool used to safely monitor liquid nitrogen levels in cryogenic storage vessels. It allows lab personnel to accurately check that samples remain submerged, preventing accidental depletion and sample loss. Many laboratories pair dipsticks with Cryogenic laboratory gloves to handle the tool safely in ultra-low temperature environments. Using a dipstick is especially valuable in IVF, research, and clinical labs where precise liquid nitrogen monitoring is critical. Cryolab recommends combining the dipstick with ultrasonic or cryogenic level sensors to add automation and redundancy, ensuring continuous monitoring and sample protection.