Ilford safelight glass

[Doylefotografix]

hi! So I have found a safelight glass from Ilford at a market. 10x8 and marked Ilford Safelight “S”
Anyone know if this is equivalent to S1?? I can’t find any glass listed with just S. Thanks xx

 

[revdoc]

There's this, which suggests it's a 902:

https://www.photomemorabilia.co.uk/Ilford/Ilford_Safelights.html

BTW, the Ilford safelight filters I've seen were gelatin sandwiched between glass. They can fade over time, and should be tested to make sure they still work.

 

[Doylefotografix]

yes Light brown it is. Obviously gonna do the tests before using but it gives out a very useable light in my darkroom

https://www.photomemorabilia.co.uk/Ilford/Ilford_Safelights.html

BTW, the Ilford safelight filters I've seen were gelatin sandwiched between glass. They can fade over time, and should be tested to make sure they still work.[/QUOTE]
Hi

There's this, which suggests it's a 902:

https://www.photomemorabilia.co.uk/Ilford/Ilford_Safelights.html

BTW, the Ilford safelight filters I've seen were gelatin sandwiched between glass. They can fade over time, and should be tested to make sure they still work.

 

[Ian Grant]

I've never had a Safelight filter fade, I'm sure they can but the wattage used is so low it would take decades

The 902 is the one Ilford recommend for MG papers, it's also the one they use in the cutting room at Mobberley although at a very much lower intensity than a normal darkroom, as many will remember from factory visits.

Ian

 

[darkroommike]

I have seen Kodak Wratten safelight filters fade, and sometimes craze. I suspect these filters were used in standard lamp housings but with larger lamps in larger darkrooms. They are a sandwich construction also.

 

[AgX]

We should not forget that there also is thermal stress on these filters installed in luminaires with incandescent lamps.

 

[MattKing]

In the old days, when people did things like smoke while doing darkroom work, there were even more things that could be wrong with safelight filters.
One should also not forget that safelights spend a lot of time illuminated by normal room light - from the front. They are also used in what may sometimes be warm and humid environments. They can, indeed, change over time.