Mercury-Free Glass Basal Thermometer. Certified Accuracy in clinical tests - More Accurate Than Digital, Designed Specifically for Fertility Charting.

An innovation in preconception and fertility products, the Fairhaven Health Glass Basal Thermometer is an ultra-accurate, mercury free, and non-toxic alternative to mercury thermometers.

Ultra Accurate!
Environmentally-Smart
Perfect For Fertility Charting

Our thermometer is family and earth-friendly, without sacrificing pinpoint accuracy or ease-of-use! In fact, our basal is certified accurate and is ideal for fertility charting (bbt charting) when accuracy really matters

Features of the Glass Basal Thermometer

Family & Nature Friendly!
Contains no-mercury.
Certified Accurate: Ideal for Fertility (BBT) Charting.
No-Break, Easy-Read Magnifying Case!
Includes Fertility Chart and Detailed Instructions on Fertility Charting with a Basal Thermometer