pulling hp5 in hc110

[mojobebop]

i lost my development times.
haven't processed film in 5 years.
i used to shoot hp5 at 250
using hc110 dilution b.

i do not see times listed for that iso/asa.
does anyone know the right dev time?

thanks in advance,
richard

 

[Roger Hicks]

250 or at best 320 is the true ISO of HP5 in HC110. Just as the true ISO in DDX is around 650.

Cheers,

R.

 

[mojobebop]

250 or at best 320 is the true ISO of HP5 in HC110. Just as the true ISO in DDX is around 650.

Cheers,

R.

hi.
does that mean i should use the 400 asa times as a starting point?
i do recall actually giving hp5 more dev time.
and processing at high temp. at times
and getting good results.
but mainly i remember the times were in excess of
what i read. (may have to do with my thermometer, or water
at the time).

 

[Roger Hicks]

hi.
does that mean i should use the 400 asa times as a starting point?
i do recall actually giving hp5 more dev time.
and processing at high temp. at times
and getting good results.
but mainly i remember the times were in excess of
what i read. (may have to do with my thermometer, or water
at the time).

I'd certainly go 10% over as a starting point. Certainly, no less than the EI 400 digures. As your own experience bears out!

Cheers,

R.

 

[jfserejo]

This one was at EI200 inHC-110 Dil. H for 7 min. with 1st 30s agitation and 3 gentle inversions / min. 20º Celsius.

I was very pleased with the results of 120 at EI200 with the compensation dilution H.

Good luck