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Hi- What are the availability and price of the integrated RG units with dichroic included? Are the polarization planes at right angles or co-vertical? Could they be made co-vertical without a 1/4 wave plate? Doe the unit need a heat sink? If so, can you supply that? Are these stable for operation ov...

Hi-
If anyone wants the paper from me send me an email at walschuler@hotmail.com. I will attach it in my reply.
It should work on AgX and I agree that it is worth trying with ascorbic acid, but that is not high on my list. If you try the formate please let me know your results.

I recently published a brief article on the hypersensitization of silver halide emulsions using a formate pre-soak., which I first mentioned in the Forum more than a decade ago. Took me all this time to try it out. See: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10558/105580C/...

Martin--- Your description of the exceptional Ilford SP-673 emulsion with the poor sensitivity when dry and extra speed gain when damp seems like a modern version of wet plate collodion emulsions of the 1800s. I had a student who, with a small amount of help from me, became expert in wet plate and i...

A progress note: After consulting with the Olsens, who donated the plates long ago, I tried a 5 minute water pre-soak. We got images (THANK YOU R and B!), albeit not very strong ones. The OD was 1.5 and 2.0 in the trials, and the images about the same strength in them. This OD for that exposure is c...

Further progress(?) 1) as per suggestion above pre-soaked (30 secs) a plate in FeEDTA bleach diluted 1:10, then normal ascorbic 10mg/liter, exp 20 secs, devo D-19 2 mins, plate OD is about 1.8, which is good, but no image 2) as in 1 above, but exposure 15 secs, OD is about 2.2 (! higher at lower exp...

We developed a supposedly unexposed plate, right out of the box, 2 minutes in D-19, and it darkened to OD around 2. We then tried taking another and soaking it in our stock ferric EDTA bleach for a minute, then rinsing, then in stock ascorbic acid redeveloper (10gms/liter) (see emaIl above) for a mi...

My usual bleach is "Wesly (Phillips) No 3": 12 grams Ferric Sulfate, 12 grams disodium EDTA, 30 grams potassium bromide, and 50 grams sodium bisulfate in 1 liter of distilled. My redeveloper is just 10 grams of ascorbic acid per liter of distilled. What dilution and soak time for the bleac...

Right--quite possible.

Regards to Joy.....Bill

Dear All, As far as development penetration, the plates appear to darken in developer under the safelight at a normal rate, so penetration may not be the issue. However, that can be further tested....There is no visible reticulation before or after exposure.....Thank you for these suggestions. They ...