Ilford Ilfostop Stop Bath – 500mL
Lock in your darkroom results with Ilford Ilfostop, a premium citric acid-based stop bath designed for both film and paper processing. This 500mL concentrate is odorless and easy to use, making it a much more pleasant alternative to traditional acetic acid baths.
Its standout feature is a color indicator that turns from yellow to purple when the solution is exhausted, taking the guesswork out of your chemistry. By instantly neutralizing the developer, it prevents over-development and protects your fixer from contamination, ensuring long-lasting, professional prints.
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Yield: Makes 10 liters of working solution (1+19 dilution).
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Speed: Stops development in just 10 seconds.
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Compatibility: Works perfectly with all manual and machine processes.
1 in stock
$28.00 inc. GST
If you’re looking to take your darkroom workflow from "guessing game" to "pro-grade precision," the Ilford Ilfostop Stop Bath is your best friend.
This isn't just a chemical rinse; it’s the bridge between developing your masterpiece and ensuring it lasts a lifetime. Here is why this 500mL bottle belongs on your mixing shelf.
Why Use Ilfostop?
When you’re developing film or paper, timing is everything. Once your developer has done its job, you need to kill that chemical reaction instantly.
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Saves Your Fixer: By neutralizing the developer, Ilfostop prevents "carry-over" from exhausting your fixer too quickly. This saves you money and ensures your fixer stays potent.
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Citric Acid Based: Unlike old-school stop baths that smell like harsh vinegar, Ilfostop is odorless. It’s much kinder to your nose during long printing sessions.
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Color-Indicator Magic: This is the best part. The solution is naturally yellow. When it’s exhausted and can no longer neutralize developer, it turns purple/blue. No more guessing if your chemicals are still good.
Technical Specs & Mixing
Ilfostop is a concentrated liquid, meaning this 500mL bottle goes a surprisingly long way.
| Feature | Specification |
| Dilution Ratio | 1+19 (1 part Ilfostop to 19 parts water) |
| Yield | Makes 10 Litres of working solution |
| Usage | Suitable for both Film and Paper |
| Processing Time | 10 seconds at 20°C (68°F) |
Pro-Tip for Longevity
Always use a dedicated measuring cylinder for your stop bath to avoid cross-contamination. Since the dilution is 1+19, a simple way to mix a standard 500mL tank is to use 25mL of concentrate and 475mL of water.
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Additional information
| Weight | 1 kg |
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| Dimensions | 20 × 15 × 15 cm |
