[alt-photo] Re: NuArc UV units question

[Paul Viapiano]

Jeremy, with all due respect, I don't believe that the question is pedantic at all.

While there isn't a quantification/definition of a NuArc unit, there is an equivalency that can be expected in a particular model with a new bulb. That's the reason I asked the question. There is no one in my area that uses a NuArc for alt exposure and I was trying to compare against others to see if my unit was faulty.

The fact that my negs for sun exposures for gum are 2 minutes or (seemingly) 120-150 units on my NuArc, and that my sun exposures for pd are 7 minutes, make it seem strange that any pd exposure would be 45 units. This is precisely the type of difference I'm trying to nail down in troubleshooting my unit.

Until I replace the bulb and do all my testing, I was just trying to get a compendium of experiences...

Paul


----- Original Message ----- 
From: "Jeremy Moore" <jeremydmoore at gmail.com>
To: "The alternative photographic processes mailing list" <alt-photo-process-list at lists.altphotolist.org>
Sent: Monday, April 12, 2010 12:22 PM
Subject: [alt-photo] Re: NuArc UV units question


> Would it make a difference if I said 15 units, 45 units, 125 units, 250
> units? Without a quantification of the amount of light against a known
> standard--which there isn't with the NuArc "unit"--your question strikes me
> as pedantic.
> 
> I use 45 units.
> 
> -Jeremy-
> 
> On Sat, Apr 10, 2010 at 10:48 AM, Paul Viapiano <viapiano at pacbell.net>wrote:
> 
>> OK, Jeremy...just curious here. How many units do you use to expose
>> palladium with a new-ish bulb?
>>
>> p
>>
>>
>>
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