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Do you still use expired lens cleaner?

tecboy

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I have been using this liquid lens cleaner until today. I just saw an expiration date. It expired three years ago. :lol:
 
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An expiration date? Holy marketing dodge Batman!

Nikon lens cleaning solution in the 4 fl oz bottle has no expiration date.

A 4 fl oz bottle lasts me about 25 years.
 
Yeah, expiration dates make sense for food-stuff and drugs, but for basic solutions that are not heat-sensitive, light-sensitive or oxidizable, there is little need for an "expiry" date.
 
Expired lens cleaner can lead to excessive ghosting and other paranormal activities in your photos.
So ... be careful
:mrgreen:

or maybe not .. probably not ...
 
Yeah, expiration dates make sense for food-stuff and drugs, but for basic solutions that are not heat-sensitive, light-sensitive or oxidizable, there is little need for an "expiry" date.

There are other reasons why the solution may go off.
The lighter components can evaporate, if water is present biological growth can severely effect it, perhaps some of the components might gradually polymerise, in some cases samples can pick up contamination from the local atmosphere...

All of these are factors I've seen in relativly inert mixtures in less than a year (in some cases biological growth can be significant in just a few weeks even for fully refigerated samples)
The expiry date is probably just the time period the manufacturer feels reasonably confidant the product should contine to meet the as new specification. But it seems increasingly common for manufacturers to add an expiry date just to cover themselves.
Using it after this date you will have no claim against them if it doesn't do it's job properly, but used with caution it'll probably work fine for many years beyond it's expiry.

IMO food expiry dates are sometimes just as meaningless, with some cheese given expiry dates that I feel are well before it has had a chance to develop it's proper flavor. (Best after?)
 
I have been using this liquid lens cleaner until today. I just saw an expiration date. It expired three years ago. :lol:

Spit & paper towels don't expire.
 
I would not be too concerned. I am just carefull that the micro cloth or whatever you are using is free of grit.
 

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