Reddit reviews SEOH Red Spirit Partial Immersion Thermometer (-20 to 110C & 0 to 230F) Dual Scale
We found 3 Reddit comments about SEOH Red Spirit Partial Immersion Thermometer (-20 to 110C & 0 to 230F) Dual Scale. Here are the top ones, ranked by their Reddit score.
Red Spirit Filled-20 to 110C 0 to 230F Dual Scale.Total Immersion.Liquid in Glass.Sold as each.
you can order the metal gallium online, melts at 86F/30C, but that's kind of expensive just for one data point
I think I would calibrate it against a glass thermometer I had checked at 0C and 100C. Heat a water bath from 0C to 50C, compare glass thermometer and voltage readings.
http://www.amazon.com/dp/B004LQ2I2M
However, I doubt you'll gain much more accuracy than the two point method.
https://www.amazon.com/SEOH-Thermometer-Spirit-Partial-Immersion/dp/B004LQ2I2M/ref=sr_1_1?ie=UTF8&qid=1494692273&sr=8-1&keywords=chemistry+thermometer
Try Amazon.
https://www.amazon.com/SEOH-Thermometer-Spirit-Partial-Immersion/dp/B004LQ2I2M/ref=zg_bs_393283011_14?_encoding=UTF8&psc=1&refRID=46XJGS5GFYEXYB9H23EN
https://www.amazon.com/Thermometer-Spirit-Total-Immersion-Scale/dp/B004LPZ42Y/ref=zg_bs_393283011_33?_encoding=UTF8&psc=1&refRID=GB83DP7GAGSWKTP5AW7V