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

1 review Write a Review
Bulk Pricing:
Buy in bulk and save


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

1 Reviews

  • 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.