I am in a sort of jam. I had been using ulano QX-1 and I still have a couple quarts left, but I can't seem to get the detail like I can with the poly plus. Or at least it seems to be easier with the kiwo. My issue is that I got a quart sample from midwest and have since fallen in love with an emulsion that only comes in gallons or larger and has a pot life of 4-6 weeks. I think that I might have gone through a gallon in the last two to three months of three different emulsions, but I am not sure that I could say that I would go through a gallon of solvent only emulsion in a month and a half.
I just got some TW 11000 series for free and it seems ok, I accidentally let some dry on a chrome spatula and I couldn't pressure wash it off! A little too flat, but I can't complain.
I just took a look at my invoices and it looks like I got the poly plus s sample exactly two months ago and I sensitized it the same day. I have kept it in the refrigerator for the most part, so that might help?I've got more room in the shop fridge for another gallon if it would extend the pot life. I know that I can buy it in quarts on line, but I would rather go through midwest and I would save about a third of the cost, gallon for gallon (in quarts).
This is why I just fell in love with the poly plus, I did an exposure test with a 1kW metal halide on 110 mesh, coated 2x2 round edge as per the manufacturer suggestion.
IMG_3513 by StuJohnston, on Flickr
I tried the same with the ulano and it got close but most of the counters in the 4pt type got blown out. As you can tell, the stuff to the right is overexposed due to the nd filter under the transparency. What really surprised me was how sharp the print was! Though it let a little too much ink through for obvious reasons, but it feels sort of embossed. I will be running another test today to compare the emulsions on 305 mesh. I suspect that the ulano will be better on higher mesh, but being able to get fine detail on 110 is really neat.
A related question is, is there a solvent emulsion that will perform like the poly plus S that has a longer pot life?
Oh yeah, is there a major difference between the dyed and undyed poly plus s?