Re: New HC110 Liquid Same as Old HC110 Syrup?
Quote:
Originally Posted by
Mark Sawyer
Just as background info, the old HC110 was glycol-based, not water-based. Glycol will not give up oxygen to degrade the chemistry. Water will. I don't know what the current HC110 uses as a base.
Here's the page on Photrio where Oren Grad posted (#27) the MSDS for a 2014 version compared to the MSDS for the 2019 version. I'm no chemist and don't know if this will be any help in deciding whether the new one is water-based or glycol-based. I don't see water listed in the ingredients.:) Bill Troop certainly knows what he's doing, and he wasn't able to draw any conclusions about the longevity of the new stuff.
https://www.photrio.com/forum/thread....169322/page-2
Re: New HC110 Liquid Same as Old HC110 Syrup?
Thanks for posting this - I hadn't noticed the "New Formula" on my recent purchase. Is the mixing process the same, or are dilutions different?
Also, where the heck have all the Kodak tech sheets gone? All I can find on the new web site is corporate puffery.
Re: New HC110 Liquid Same as Old HC110 Syrup?
I’ve been using the new HC-110 and, from what I can tell, longevity of working solution is different than the older solution. I’m in the process of characterizing development activity fall-off over time.
Re: New HC110 Liquid Same as Old HC110 Syrup?
Are you speaking about dev concentrate, Jason, or mixed stock solution ?
Re: New HC110 Liquid Same as Old HC110 Syrup?
Quote:
Originally Posted by
Drew Wiley
Are you speaking about dev concentrate, Jason, or mixed stock solution ?
I always mix from concentrate, and my go-to is dil B.
Re: New HC110 Liquid Same as Old HC110 Syrup?
Well I didn't know this. I use HC110 in tiny amounts from my last bottle, for LF and 35mm. My dilution is H, so it takes a long time to use an opened bottle, shooting as little as I do now.
Re: New HC110 Liquid Same as Old HC110 Syrup?
I always used HC110 1:31 straight from the bottle (Dilution B) with great consistent results. It lasted a long time in syrup form that way, even with color changes.
Re: New HC110 Liquid Same as Old HC110 Syrup?
But the remaining question is, how long does the latest undilute CONCENTRATE last in comparison to the old formula? It might take awhile to find out, and I'm not the best candidate to decide that, because my own little stash of original HC-110 is going to take quite awhile to use up, and I know it keeps superbly in concentrate, even if only a little of the syrup is still left in the bottle.
Re: New HC110 Liquid Same as Old HC110 Syrup?
The new formula does not keep as well as the old syrup. I opened a bottle of the new stuff a few months ago, used about half of it, and now find that the remainder has formed crystals in it. I tried stirring it to dissolve the crystals, but no luck. The bottle has an expiration date of 2021. I went ahead and used it, and it seemed to work fine, but who knows, there could be a slight variation in performance I didn’t notice. My faith in Kodak chemistry, however, is waning. It used to be the gold standard one could rely on as an unchanging variable. Now after seeing brown Dektol, precipitate in Kodafix and HC-110, I’m seriously considering mixing my own from scratch.
Re: New HC110 Liquid Same as Old HC110 Syrup?
I switched from HC110 which I had used since the late 60s to Ilford IlfoTec HC several years ago. I found the times at 1:31 and other dilutions were exactly the same as those I had derived for HC110.