Homemade HC-110 analog

bnxvs

Member
Joined
May 6, 2017
Messages
232
Location
Astana, Kazakhstan
Format
Multi Format

Trying to preparation of a concentrate similar to HC-110 (new 2019 version)

BnxVS Prepare two separate solutions for 200 ml of concentrate. Solution A (sulfite): Potassium hydroxide ... 14g Potassium metabisulfite ... 28g * Water ... up to 75ml (stir until completely dissolved) Solution B (developing agents) Ethylene glycol (antifreeze, propylene glycol, etc.) ...
telegra.ph
It's also known as "KGB-20" in runet )))
 

Alan Johnson

Subscriber
Joined
Nov 16, 2004
Messages
3,287
For comparison the MSDS of the original and later HC-110 are given in post 27 here:

New HC-110 Formula

Any thoughts on the new formula's keeping properties? One of the features that I have always liked about HC 110 has been it's keeping property. This is a radical reformulation. The fingerprint technology of HC-110 -- the use of a DEA-sulfur addition product (originally patented by Kodak...
www.photrio.com
IIRC there is an even newer version [made by Sinopromise?] that has the sulfur dioxide diethanolamine adduct of the original.
The concentrate as prepared in the post above seems to be similar to the later HC-110 in post 27.
 
Last edited:
OP
OP

bnxvs

Member
Joined
May 6, 2017
Messages
232
Location
Astana, Kazakhstan
Format
Multi Format

Yep! That's what the title of the post says - the 2019 version ))

p.s. By the way, the recipe itself was created in 2020. And the concentrate survived storage well for a year or more with the people who tested it.
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…