
1 Year
$3.99
2 Year
$4.99
3 Year
$7.99
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Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
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Acid sulfite of soda
Leucogen
Sodium acid sulfite
Sulfurous acid, monosodium salt
Sodium hydrogen sulfite, solid
White, crystalline powder
Slight odor of sulfur dioxide
In acidulating and preserving fixing baths
As a preservative for pyro developer
A mixture of NaHSO3 (sodium bisulfite) and Na2S2O5 (sodium metabisulfite)
10lbs (4.54kg)
How can you enhance your photographic development process With Photographers' Formulary's 10lbs Sodium Bisulfite, you can achieve professional-grade results in black and white film development. This high-quality, reliable, and durable product is specifically designed for use in acidulating and preserving fixing baths, ensuring your images maintain their clarity and quality over time.
Notably, Sodium Bisulfite serves as an effective preservative for pyro developer, extending its usability and enhancing its performance. This product's versatility is further highlighted by its ability to be substituted weight for weight with sodium metabisulfite, providing flexibility in your photographic processes.
Unlike many alternatives, this Sodium Bisulfite is highly soluble in water, ensuring easy integration into your development process. However, it remains insoluble in alcohol, maintaining its integrity and effectiveness.
Choose Photographers' Formulary's 10lbs Sodium Bisulfite for a superior, professional, and effective solution in your black and white film development process.