# Another gin Q: G & T fluorescence?

**URL:** <https://boards.straightdope.com/t/another-gin-q-g-t-fluorescence/197056>\
**Category:** Factual Questions\
**Created:** [August 23, 2003, 12:59am UTC](https://boards.straightdope.com/t/another-gin-q-g-t-fluorescence/197056 "2003-08-23T00:59:18Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![El\_Kabong](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/el_kabong/32/496_2.png) [@El\_Kabong](https://boards.straightdope.com/u/El_Kabong)\
**Post date:** [August 23, 2003, 12:59am UTC](https://boards.straightdope.com/t/another-gin-q-g-t-fluorescence/197056/1 "2003-08-23T00:59:18Z")

</div>

Past couple times I’ve been in a particular bar that includes black light as part of its hipster '60’s ambience, I’ve noticed my gin & tonics fluoresce a rather unnerving yellowish-green. I’m presuming the effect is related to the quinine in the tonic water, but thought I’d make sure. Can anyone confirm this?

---

<div class="post-metadata">

**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [August 23, 2003, 1:02am UTC](https://boards.straightdope.com/t/another-gin-q-g-t-fluorescence/197056/2 "2003-08-23T01:02:43Z")

</div>

[Yes, it’s the quinine](http://www.cheminst.ca/ncw/experiments/etonic.html).

---

<div class="post-metadata">

**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\
**Post date:** [August 23, 2003, 1:03am UTC](https://boards.straightdope.com/t/another-gin-q-g-t-fluorescence/197056/3 "2003-08-23T01:03:40Z")

</div>

Nice picture of glowing tonic water on this page:

[http://www.dansdata.com/io005.htm](http://www.dansdata.com/io005.htm)

(about half way down the page)