Rollei RWA c wetting agent 250ml
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Usually ready in 24 hoursRollei RWA c Wetting Agent – 250ml
Rollei RWA c is a highly effective wetting agent for the final treatment of black-and-white films as well as fiber-based (FB) and resin-coated (RC/PE) papers. It reduces the surface tension of water, ensures uniform runoff, and helps prevent drying marks and streaks.
While it noticeably improves drying results and eliminates edge marks on fiber-based papers, it can also be used optionally with RC/PE papers—especially when working with hard tap water or aiming for optimal drying outcomes.
Features:
- Suitable for black-and-white films, fiber-based (FB) and resin-coated (RC/PE) papers
- Ensures streak-free, even drying
- Prevents water spots and drying marks
- Very economical – only a few milliliters per liter of working solution
- Suitable for both tray and machine processing
- Can be used with tap or distilled water
Application:
After final rinsing, immerse the film or paper for about 30–60 seconds in a highly diluted solution (e.g., 2–4ml RWAc per 1 liter of water). Do not wipe to avoid damaging the surface—simply hang or lay flat to dry.
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Rollei RWA c wetting agent 250ml
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FAQs
What do I need to develop black-and-white film?
For classic black-and-white film development, you need three baths:
Developer – makes the exposed image visible
Stop bath – stops the development process
Fixer – stabilizes the image and makes it light-resistant
With the Rollei Film Chemistry Kit, you get all three components in one perfectly matched set:
- Rollei RSG = developer
- Rollei RCS = stop bath (citrate-based, low odor)
- Rollei RXA = universal fixer
A compact solution for everyone who wants to develop black-and-white film at home – easy to use and precise in results.
Which chemistry is suitable for color film?
Color films require special development processes. For color negative film, this is the C-41 process.
The Rollei Colorchem C-41 Kit contains all essential components – color developer, bleach-fix (blix), and stabilizer – precisely balanced for safe processing at 38 °C. It delivers color-accurate negatives with fine grain and good longevity.
Note: Slide films (reversal films) require a different process – the E-6 process, which is more complex and not compatible with C-41.
How long do photo chemicals last?
It depends on the type of chemical, how it’s stored, and whether it’s been opened:
- Unopened concentrates: usually last 1–2 years if kept in a cool, dark place
- Opened concentrates: can last a few weeks to several months, depending on air exposure and storage
- Mixed working solutions: are typically good for a few days to a few weeks
Pro tip: If it smells off, changes color, or shows sediment – it’s probably time to toss it. For maximum shelf life, always store your chemicals airtight, cool, and away from light.
Can I reuse photo chemistry?
Yes, many photo chemicals can be reused – especially fixers, stop baths, and some developers.
The exact number of uses depends on the type of product, dilution, and volume of material processed.
Fixers can even be regenerated – for example, by adding fresh concentrate or a dedicated replenisher.
This is especially worthwhile if you're processing frequently and want to maintain consistent performance over time.
With developers, regeneration is more difficult: many are sensitive to oxidation and lose activity with each use.
A simple top-up usually isn’t enough – fresh working solutions are generally the more reliable choice.
Stop baths are typically replaced once the pH level shifts (e.g., when a color indicator changes, as in citrate-based stops).
Pro tip: If you process regularly, it’s helpful to track your usage (e.g., number of rolls or prints) to know when to refresh or regenerate your chemistry.
How do I properly dispose of used photo chemicals?
Photo chemicals should never be poured down the drain or thrown in the trash!
They contain substances that can harm the environment – especially fixer, which may contain residual silver. Used chemistry should be taken to a hazardous waste collection site or local recycling center. In some regions, labs or photo retailers also offer disposal services.
Pro tip: For small quantities, collect the chemicals in tightly sealed and clearly labeled containers and dispose of them all at once. Always follow your local regulations for disposing of photographic and lab chemicals.