Well, I know Eclipse is not 100% methanol but I should hope it's fairly
pure at about $10 for a 59 ml bottle. And, of course, not leaving a
residue is what Eclipse is supposed to be all about. If measured in
drops I think the amount I've used so far could be counted with no more
than 10 fingers. I may use it again in the future but only rarely.
I don't think Photographic Solutions ever admitted to Eclipse causing
damage to anyone's sensor... at least not publicly. But it didn't take
long for them to come up with Eclipse 2 after reports started surfacing
about damaged tin oxide coatings.
Chuck Norcutt
Jan Steinman wrote:
>> From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
>>
>> ... news from Photographic Solutions that Eclipse (methanol) was
>> thought to be damaging tin oxide coated sensor filter
>
> All methanol is not equal.
>
> If you really want 100% CH3OH, you need to specify "reagent quality"
> methanol, and get it from a chemical supply house.
>
> "Common" methanol can contain about 20% ethanol, isopropyl, and other
> liquid hydrocarbons. Some of these may be reactive or leave a residue.
>
> I suspect that methanol is the primary ingredient in PEC-12, the
> popular photographic emulsion cleaner. Also, common gasoline anti-
> freeze treatments, such has HEET, are primarily methanol. But either
> of these also have other stuff that may damage coatings or leave
> residue.
>
> Bottom line: I'll bet it was not methanol that was damaging sensors,
> but impurities in methanol-based products.
>
> Also, be careful with this stuff. 10ml is enough to kill half the
> people ingesting it (LD50 dose). It is absorbed directly through the
> skin, and vapours go right through your lungs. Tiny amounts in the
> eyes will blind you. The effects tend to be cumulative and
> progressive. No hazmat filters will make it safe to breathe -- you
> need an external source of air when working around the fumes.
>
> On the up side, the antidote to methanol poising is ethanol. So after
> cleaning your sensor, have a couple stiff drinks, just in case.
>
> (There was some controversy last time I posted the ethanol antidote,
> but I have since double-checked it with the MSDS and other sources.
> Google or Wikipedia before flaming.)
>
>
>
>
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