HyLids - Analog - Wide Mouth (3 3/8") Hygrometer Lid - FREE SHIPPING (USA)

2 reviews Write a Review


HyLids hygrometer lids fit on regular and wide-mouth Mason canning jars. You are now able to monitor and adjust the relative humidity(RH) inside a jar and make adjustments as needed.


2 piece Analog HyLids wide-mouth hygrometer lid w/outside ring.

Calibration Instructions

2 Reviews

  • Posted by G. Bucknam on Aug 19th 2022


    Wide Mouth Analog

    I'm very happy with their service, item arrived in a timely manner and was well packaged. I absolutely love these hygrometer's, they come pre-calibrated and when checked against a calibrated reference, they're spot on. I will be purchasing more in the future.

  • Posted by Joy Baisden on Jan 12th 2021


    Work Well and Well Made

    Very happy to use these on my seed storage jars along with silica gel packets. Thank you.