Is SlowFade Glass supposed to look brown?

Probes & Prep
1

Hi all,

I’ve decided to give SlowFade a try.

A couple weeks ago I purchased a bottle, and mistakenly stored it above the recommended temperature (4 degrees, instead of < -5 degrees…)

Upon the first time opening it (today), the liquid looks brown colored.

Does anyone with experience using SlowFade Glass know if this is supposed to be brown before mounting? I would expect it completely transparent, considering the application…

Many thanks in advance.

2

Hi! Many anti-photobleaching reagents include phenylenediamine, which can turn brown over time. It’s usually ok for a while but I’d recommend you look at one of your samples before mounting it, and again after, to be sure.

3

Thanks Jennifer, I’ll not throw it in the trash just yet!

4

Agree with Jennifer, I;ve used plenty off mounting agents that have a color of brownish-red and they were ok, but keep your eye on it. I always felt like this was more common when the reagent was a bit older or had seen a few cool-warm cycles, but that it just a ‘feeling’.