Firstcall Photographic

Ilford Ilfostop Stop Bath - 500 ml

Ilford Ilfostop Stop Bath - 500 ml - Main image
$7.1 $11.84 In stock

Category: Film & Film Processing Film Processing Chemicals

Ilford Ilfostop is a low odour citric acid stop bath. After development we recommend that films and papers are rinsed in an acid stop bath to stop development immediately and neutralise the developer to help maintain the activity of the fixer bath. It contains an indicator dye that is pH sensitive and changes colour from yellow to purple as the stop bath becomes exhausted. It is specifically recommended for dish/tray processing of paper or deep tank processing of film. Ilfostop helps to maintain the activity and prolong the life of the fixer solution by reducing carry over of excess developer (alkaline) into the fixer bath (acidic). It is not recommended for machine processing applications as the short fix and wash times often used may leave a residual dye stain on films and prints. The longer wash times usually associated with dish/tray and tank processing minimise this risk. Do not let developer become contaminated with a stop bath solution. Makes 10 litres as dilutes at 1+19.

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Customer Reviews (5.0 / 5 · 5 reviews)

Isabella R. ★★★★★

The citric acid formula really does keep the smell down compared to other stop baths I've tried. It stops development instantly with a quick rinse, and the 500 ml bottle has lasted me through several sessions without issue.

Edward ★★★★★

I love how easy it is to tell when this stop bath is exhausted—the color change is so clear that you never have to guess. The citric acid formula really does cut down on the sharp chemical smell compared to the other stop baths I’ve used. My negatives come out perfectly clear every time, and the 500

Joshua L. ★★★★★

The indicator dye going from purple to clear is such a simple visual cue, it’s saved me from over-guessing in the darkroom. Mixed a batch for my prints and it stopped development instantly without that sharp vinegar sting I’m used to.