
As I'm in the UK I get both the Tetenal Ag/pH test strips and HT-2 hypo test from Silverprint. Sorry, no idea where you can get it in the US. The strips are expensive so I cut them along their length to get twice as many (cheap so-and-so that I amHello, Bob.
Where did you get those Tetenal fixer test strips?
I use Edwal Hypo Chek drops.
)..Harman/Ilford was supposed to be releasing a version of MG FB that dries flat. See (there was a url link here which no longer exists). Did it ever come to pass?
Also, (there was a url link here which no longer exists) might be useful.
The last one marked "Tetenal" did not but the latest one I have does and although otherwise identical, it is branded as Macherey-Nagel which is the manufacturer. Possibly Tetenal no longer re-brand them, IDK. This one does have what looks like a use-by date (which has now expired). I have no idea how critical the use-by date is but the box does say to reseal the container immediately after use.Bob, Do the Tetenal test strips have an expiry date once the container has been opened?
Thanks,
Ian
I also test the fixer to keep silver content below
1g/l using Tetenal test strips; fresh fixer is essential
to this method.
A fixer can be completly exhausted and still have less
than some specific level of silver. Where fixers are
used and reused and worse yet bottled then
back in use again they deteriorate.
A strip test similar to that for film is likely best if one
wishes to be sure. Counting square inches or sheets
is not so good because the mix of silver halides and
the amount varies more than a little from paper to
paper.
So strip test and silver load test. Or as I've done,
establish fixer minimums, use fresh as a one-shot,
and don't worry.
BTW, 1g/l is a good safe level although Ilford has
set a level 0.5g/l for optimum permanance. Dan
I have always bottled and reused my fixers until the Hypo
Check drops turn milky. Sometimes, when I have not printed
or processed film much, this could be six months or more
for a gallon of fixer.
I simply don't want to have to spend so much on fixer and
have to store so much exhausted fixer until I can get rid of it
safely and legally. Just how bad is it to save your fixer?
Also, how much steel wool do I need, ... ?
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