Donald Qualls' successful monobath posted on phot net

Here is the link that the excerpt below, comes from

I have highlighted an interesting comment which needs to be tested.  

And Bravo to Donald!

Donald Qualls , Feb 29, 2004; 08:18 p.m.
Monobath from commercial chemicals: success!!

"Second results:

400TX 135, souped ten minutes, 75 F.

16 ml HC-110 USA concentrate
50 ml household ammonia (ammonium hydroxide, probably 5% solution)
10 ml Ilford Rapid Fixer concentrate
water to make 256 ml

Mixed by adding most of the water to the HC-110 concentrate, then ammonia, then fixer, then remainder of water to make up volume. Heated to 75 F in an external hot water bath.

Result: normal appearing negatives, within approximately 1 stop of rated speed at worst. I won't know for certain until I can scan them (they're drying now, probably won't get them scanned tonight), but to my eye contrast range appears normal and low light details are preserved -- I intentionally shot at a wide range of exposure, from about +2 to -2 stops, to test whether the latitude of the 400TX would be preserved, and it appears it was; there is considerable detail in a shot taken with a simple camera (most likely f/11, 1/100) in a grocery store aisle by available light, a situation that normally demands f/2.8 at 1/30 with ISO 400, give or take one stop.

Worthy of note that the concentrates used have excellent keeping properties, and household ammonia is a common cleaning supply available worldwide. Even accounting for use of distilled water both for mixing and a multi-change stand wash, total cost per film is about $1.25; if tap water can be used for wash, cost is more like sixty-five cents per film in 35 mm -- 120 would be about double this, since twice the solution is required for the same film area (unless one masters back-to-back loading). Film processed this way should be archivally stable if properly washed; even at this 1:24 dilution, the fixer has about 200% capacity over that needed to fix 80 square inches of film per above batch of monobath.

I'm pretty happy with this, as you can probably tell."