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Description
Photographers' Formulary Sodium Sulfite (Anhydrous, 5 lb)Common Developing Agent Preservative Energizer for Amidol Developer Used in Acid Fixing Bath Blackener for Negative Intensification This is 5 lb of anhydrous Sodium Sulfite from Photographers' Formulary . It is most commonly used as a preservative in developing agents and is also an active energizer in Amidol development. It is also used within acid fixing baths and as a blackener for negative intensification processes. UPC: 675152134103 Synonyms
- Common Developing Agent Preservative
- Energizer for Amidol Developer
- Used in Acid Fixing Bath
- Blackener for Negative Intensification
This is 5 lb of anhydrous Sodium Sulfite from Photographers' Formulary . It is most commonly used as a preservative in developing agents and is also an active energizer in Amidol development. It is also used within acid fixing baths and as a blackener for negative intensification processes.
UPC: 675152134103
| Synonyms | Sulfite of Soda Sodium sulfite anhydrous Disodium sulfite Sulfurous acid, disodium salt Exsiccated sodium sulfite |
| Appearance | White granular crystals or powder |
| Uses | As a preservative of developing agents Constituent of the acid fixing bath Blackener in negative intensification Active energizer in Amidol development To clear Polaroid Type 55 black & white negatives |
| Chemical Formula | Na 2 SO 3 |
| Notes | Sodium sulfite is the most widely used preservative in developers. It also plays an important part in the process itself. |
| Weight | 5 lb / 2.3 kg |
| Packaging Info | |
|---|---|
| Package Weight | 5.35 lb |
| Box Dimensions (LxWxH) | 7.1 x 5.1 x 5.1" |
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4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Great for aggressive chewers
Color: Mixed, Size: Medium
This toy held up well. My dog is a very aggressive chewer and will shred apart any toy she can. She was not able to tear up this one. I have not found many toys that she doesn't destroy
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great dog toy.
Color: Mixed, Size: Medium
Great dog toy, it's one of her favorite toys.
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Reviewed in the United States on June 9, 2026
★★★★★ 4
Smaller than pictured
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
It’s a lot smaller than pictured and I have the same dog type as was depicted in the one of the pictures. The dog like it so I guess that’s good. I will not be playing tug of war with him using this. I like my fingers thank you very much. I would say it durable. He destroys most toys in minutes. He did destroy the squeaky part in about 10 minutes so bonus points for that.
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Reviewed in the United States on October 11, 2025
★★★★★ 3
Not for aggressive chewers. But still a good product.
Color: Mixed, Size: Medium
Cute toy, my dog was obsessed with it, but within like 1-3 days I couldn’t put any treats in the places for it as my aggressive chewer dog destroyed it within a day or so haha. But she still loves it and just chews on it for fun. Doesn’t last long with aggressive chewers if you’re looking to put treats and such in it like I did. But again that part may be broken and she still chews on it so not too bad!
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Reviewed in the United States on April 24, 2026
★★★★★ 5
She sat still and licked peanut butter. I clipped nails!! "FINALLY" 😃😄
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
I have a Belgian Malanois who WILL NOT let me clip her nails. I got this a little bit of peanut butter in the places you can put it under the bottom in little compartments like which she sits and trys to lick it all out of every little cranny and while doing that, BOOM nails clipped and filed. Great product and worked exactly as I needed. Highly suggest if ya need the fur baby to sit still while you brush alor clip whatever you need, it works and if it works for my Dog a Belgian Malanois-look them up-it will def work for yours!!!! Oh yeah another great thing is it's nearly indestructible. I say nearly because she will prove me wrong if I say it is completely indestructible. Good buy. I suggest it for sure.
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Reviewed in the United States on October 6, 2025