Long-expired Kodak hypo clear...OK to use?

Robert Kerwin

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• Feb 18, 2023

• #1

I just discovered a couple of unopened packages of Kodak hypo clear I didn't know I had. According to the date stamped on the package they expired in 2008 (they were stored at room temp the whole time). Would these be OK to use? What about the unopened packages of Dektol I found in the same box o' stuff (expired 2009)? Thanks!

 

Sirius Glass

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• Feb 18, 2023

• #2

Sure, why not. As long as the package is whole and has no leaks use it. If it has crystalized or turned color, check back in with us. I have used old packages of photochemicals.

 

mshchem

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• Feb 18, 2023

• #3

I've used HCA that's 30 years old. As long as it's in sealed original packaging should be OK. The stuff in the the cardboard boxes from the 60's and early 70's being the exception.

 

Bill Burk

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• Feb 18, 2023

• #4

The Dektol in paper/foil is better than what you can buy new

 

mshchem

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• Feb 18, 2023

• #5

Bill Burk said:

The Dektol in paper/foil is better than what you can buy new

Click to expand...

I've got Dektol in metal cans from early 70's, pure crystals. The good old days!

 

RalphLambrecht

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• Feb 19, 2023

• #6

Robert Kerwin said:

I just discovered a couple of unopened packages of Kodak hypo clear I didn't know I had. According to the date stamped on the package they expired in 2008 (they were stored at room temp the whole time). Would these be OK to use? What about the unopened packages of Dektol I found in the same box o' stuff (expired 2009)? Thanks!

Click to expand...

Kodak hypo clear is a non-critical chemical and I would use it without hesitation. Dektol all should be fine, but look at the color when you open the package. If it's light tan use it; if it is, however, dark brown, avoid it.

 

MarkS

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Mar 12, 2004

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• Feb 19, 2023

• #7

KHCA is mostly sodium sulfite and a little sodium bisulfite. Simple stuff. It's not going to oxidize like a developer, and as long as the package is still sealed it will be fine.