Photographers' Formulary 50lbs Anhydrous Sodium Thiosulfate

When it comes to the meticulous art of black and white film development, our 50lbs Anhydrous Sodium Thiosulfate from the trusted brand, Photographers' Formulary, stands out as a high-quality, reliable choice. This professional-grade product is specifically formulated for use in photography, ensuring it meets the unique needs of photographers.

Anhydrous Sodium Thiosulfate is primarily used in the preparation of fixing baths, serving as a crucial ingredient in various reducers. Unlike its counterpart, the more commonly used crystalline hypo, anhydrous Sodium Thiosulfate does not lower the water temperature significantly when dissolved. This makes it an effective and efficient choice for photographers who require consistent temperature control during the development process.

For those transitioning from the crystalline form, it's important to note that you should use 64% of the anhydrous salt as a substitute for crystalline hypo. Always start with water of at least 90 degrees Fahrenheit (32 degrees Celsius) when mixing the crystalline form to ensure optimal results.

In summary, our 50lbs Anhydrous Sodium Thiosulfate is a durable, high-quality product designed to deliver professional results in black and white film development. Its specific formulation and reliable performance make it a preferred choice for photographers seeking precision and consistency in their work.