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I bought my from OPT, so maybe thats why my 11mm is still the N2 purged style. I dont mind either way as far as that goes really though.

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Why Astronomics not call and have ES factory shipping to customers

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I would much rather they come from Astronomics, rather than the ES factory. If you have a problem with one, would you rather ship it back to the factory and wait, or have Astronomics handle it for you?

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Since rubber seals seem to last longer with Argon inside, I believe they are in the process of converting all N2 purged eyepieces to Argon.
At least, that's what I heard.

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I finally heard back from Explore Scientific on this issue. When I received my 'Nitrogen' box (box indicated nitrogen purged ES82 series), with an Argon lettered (says Argon purged) with Argon symbol on sticker (Ar), I inquired from ES what was up with that. In part, because I had some initial concern about a possible knock-off/copy, but also because it was (to me, as a consumer) confusing with no insert to explain the reason for mismatch box to eyepiece, or an ongoing conversion taking place and nothing on their website to announce a change was in process.

So, here is the official response I received from a representative at ES today:

"Although we never had any issues with the Nitrogen, at some customers request (who are familiar with inert gases) we decided to make the switch to Argon. The Argon molecule is a larger molecule which over time may give us less issues than Nitrogen. However, as I stated, we haven’t had any issues with the Nitrogen. We just need to watch and label our boxes better as we QC them."

This is as some have speculated, and (to me) it made some fiscal sense why the mismatched boxes and eyepiece lettering/stamping (costs money to throw out surplus boxes and eyepiece barrels, etc., so perhaps they opted to use what they had in supply). My only real 'gripe', if it could be considered such, is that either a paper insert to explain the ongoing program to convert and/OR something prominently featured on their website, which (at the time) still marketed the ES82 'Nitrogen' purged line of EP's... while I held in my hand one that said Argon.

I won't say 'mystery solved', as many solved this thru speculation or other sources of information. For me, it's nice to finally see something of an official word from ES on the matter.

To those that recieved some of the conflicting labeled EP's, enjoy the Nitrogen lettered, Ar stamped EP's while they last! In the future, perhaps it could be resold as 'Rare Edition ES82 Nitrogen/Ar eyepiece'. Purged twice, for good measure.

mark

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Well the one thing ES is good at is "purging" my wallet of greenbacks.

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I wish I could provide them with more opportunity to do so to MY wallet. My wife and 4 daughters do a right thorough job of this already.

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To those that recieved some of the conflicting labeled EP's, enjoy the Nitrogen lettered, Ar stamped EP's while they last! In the future, perhaps it could be resold as 'Rare Edition ES82 Nitrogen/Ar eyepiece'. Purged twice, for good measure.

mark

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I plan to do so!

Would be nice to know, however what's inside, Argon or Nitrogen.

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