Offered here in a 30mL sachet, this Simplicity Black and White Film Stop Bath from Ilford is a liquid-concentrate stop bath. The sachet contains the correct amount of photo chemicals to develop two rolls of 35mm film or one roll of 120 film when using a two-reel, 600mL developing tank, once diluted with 570mL of water.

Designed for Film Development

Related Questions and Answers

Q: 1. Can this be used for prints as well?

A: The SIMPLICITY Stop Bath from Ilford is a pre-measured portion of ILFOSTOP liquid concentrate stop bath, delivered in a single-use sachet, which is enough to process exactly one roll of 120 or two rolls of 35mm film in a two-reel, 600mL developing tank. While the stop bath may work for RC paper, I would not recommend it as there is not enough for multiple printing needs.

Q: 2. Can this chemical kit be used to develop 4x5 sheets?

A: Yes, this Ilford SIMPLICITY Starter Pack can be used to develop 4 x 5" B&W film.

Q: 3. After mixing 1:19, how long to leave the film exposed to the stop solution before fixing?

A: 30 seconds with continue agitation. I am chemist. You are neutralizing using a week acid, if your time goes some seconds over it does not have huge impact.

Q: 4. How long does each chemical last in the packet unopened? How long do they last after they are opened? How long do they last after dilution?

A: According to the manufacturer, "new sachets can be kept for up to 2 years, once opened they should be used immediately, if opened accidentally and resealed then use within 6 months."

Q: 5. What happens if you develop 2 35mm and then reuse it to develop 2 more?

A: The results could be less than ideal such as under developed and lower contrast negatives.

Q: 6. Can these be used to fix paper prints?

A: While it may be possible to use the same fixer for both film and paper, I do not recommend using the same working batch for both film and paper. If you do plan to use the same fixer for both film and paper prints, I would create one working batch to be used with your film, and a separate working batch to be used with prints.

Q: 7. Is this the same as ilfotol?

A: Yes the Ilford Simplicity Black and White Film Wetting Agent is exactly the same as Ilfotol.

Q: 8. After mixing the concentrate with water. What is the maximum time to be able to reuse it again?

A: The working strength is good for 7 days.

Q: 9. How long will this last before it will go bad?

A: The Ilford Simplicity Black and White Film Wetting Agent (25mL) can be kept for 2 years unopened. Once opened they should be used immediately. If opened accidentally then immediately resealed it should be used within 6 months.

Q: 10. what is development time for HP5?

A: 6:30 at 68 degrees 5:30 at 75 degrees