This is a good example of the logical fallacy of reducto ad absurdum.
But as I understand now, we need to worry about the remaining <1%. Apparently veritable horrors may be lurking in those margins. Our negatives may spontaneously combust, disintegrate or start a new sectarian movement that retreats to the Columbian jungle while luring other negatives and prints with them.
FWIW, I've always used plain old lye for "sodium hydroxide, anhydrous" when mixing Parodinal, and gotten very good results. According to the label, it's above 99% sodium hydroxide. It's available in supermarkets in some regions (or was a few years ago) under the Red Devil brand and also as a store brand in some chains. Last time I looked, though, it wasn't at my local Food Lion, so I ordered a can of whatever brand from Amazon.
But as I understand now, we need to worry about the remaining <1%.
distilled dihydrogen monoxide
This is a good example of the logical fallacy of reducto ad absurdum.
The least expensive sodium hydroxide (lye) I found on Amazon is $11.30 for 16oz.
You can worry if you like.
They ARE the 1%.
In reality, the stuff of course works just fine.
some annoying scent that does nothing to improve the smell of Caffenol
Anyone here using an 81B filter for the tungsten balanced cine films, or are you just fixing it in post?
I have never said you shouldn't use grocery store and home center products for photographic purposes if you are careful not to obtain such products that contain extraneous ingredients which may have an impact on you results. What I have expressed is that I don't understand the attraction for doing so. You have mentioned convenience. I suppose cost is another. Yet there seems to be something else at play.Every time the issue of supermarket-chemistry comes up, there's bound to be someone to raise their finger stating that people shouldn't be doing it, you're running all manner of risks, things might go wrong, blah blah blah. In reality, the stuff of course works just fine.
81B will drop 300K (81A will warm by 200K). Not necessarily for tungsten light. I would use these filters more on films balanced for daylight (5500K) in cloudy weather or when I'm just looking for a warming effect. They can also be combined with an 85B filter, which I would use with tungsten balanced film in daylight. All my filters are round thread 52mm which matches a range of Nikon lenses - very convenient.
You have mentioned convenience. I suppose cost is another.
And then there is this question I asked but got lost in the discussion of using driveway cleaner for remjet removal and using grocery store and home center products for photographic purposes:
I have never said you shouldn't use grocery store and home center products for photographic purposes if you are careful not to obtain such products that contain extraneous ingredients which may have an impact on you results. What I have expressed is that I don't understand the attraction for doing so. You have mentioned convenience. I suppose cost is another. Yet there seems to be something else at play.
using a filter for the tungsten balanced cine films in daylight, or are you just fixing it in post?
Perhaps I should have ask a more more general question: Is anyone here using a filter for the tungsten balanced cine films in daylight, or are you just fixing it in post?
I have never said you shouldn't use grocery store and home center products for photographic purposes if you are careful not to obtain such products that contain extraneous ingredients which may have an impact on you results. What I have expressed is that I don't understand the attraction for doing so. You have mentioned convenience. I suppose cost is another. Yet there seems to be something else at play.
In many parts of the world - Canada included - availability of photo-grade chemical components is inconsistent at best, and sometimes far more expensive than in the USA. There are sometimes also problems with impractical minimum order quantities.
While those things may be true, presumably those concerns would also apply to photographic chemicals not obtainable through grocery store and home center products, rendering the mix it up yourself approach untenable in those countries.
Distribution channels and importation/environmental realities are inconsistent - particularly when the goal is accessing relatively small quantities.
If a product is available at a chain store home centre, it means that entity has gone through the effort and expense to get reasonable home size quantities of product in to their local distribution system. That is frequently impractical for individuals.
I have a friend who is a retired high school chemistry teacher. Before retirement, chemical suppliers who served the school market permitted him to open a private account for his own purchases that gave him partial access to some items in their product line. As soon as he retired, his access ended, and the suppliers would no longer sell to him under any circumstances.
extra ingredients in some drain cleaners might be there to prevent the stuff dissolving into a caustic puddle when stored in that damp cupboard under the sink.
AFAIK, there is nothing you can add to anhydrous sodium hydroxide to prevent it absorbing carbon dioxide and water from the air and deliquescing
You live in Canada and mentioned the difficulty of obtaining photographic chemicals in Canada. Is there not a ready source(s) of photographic chemicals in reasonable quantities anywhere in Canada?
Argentix in Montreal has some things. Flic Film has some things.
Some things can be imported from places like Artcraft - but not everything can be shipped/exported.
Industrial quantities are apparently available to industrial users, but small enough for individual use quantities are problematic.
Most of the world is very different from the USA!
Sounds like a photographic wasteland, with Canadian photographers forced to buy products from grocery stores and home centers just to develop their film. I wonder if they have considered purchasing name brand photographic solutions? Argentix which you mentioned appears to carry a wide selection.
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