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Plastic bottle of black and white film developer concentrate, one gallon size

Acufine

Acufine Diafine 2 Bath B&W Film Developer Concentrate 1 Gal

SKU CH-E94T-094HJ

Two-bath black-and-white film developer concentrate yielding one gallon, develops fast, medium and slow films together across a wide temperature range without time adjustments

  • Professional-grade developer delivers consistent black-and-white results
  • Wide temperature range works without time adjustments
  • Develops fast, medium, and slow films simultaneously
  • Ultra-fine grain and maximum acutance maximise film speed
  • Highest resolution with wide exposure latitude needs no compensation

Professional Black & White Film Developer

Acufine Diafine is a professional-grade two-bath black and white film developer concentrate that makes one gallon of working solution. It is designed for photographers who need consistent darkroom results without strict temperature control or separate development times for different film speeds.

Wide Temperature Range and Simultaneous Development

The concentrate works across a broad temperature range with virtually negligible time-temperature impact, removing the need for constant adjustments. Fast, medium, and slow films can be developed simultaneously to normal contrast, though some extremely slow emulsions are excepted from this compatibility.

Workflow Efficiency and Image Quality Benefits

The two-bath formula streamlines workflow by eliminating separate timing for mixed film batches and maximizes effective film speed for challenging lighting. It delivers ultra-fine grain and maximum acutance, producing high-resolution negatives with wide exposure latitude without requiring exposure compensation.

How it compares

Measured against everything we stock in Photo Film & Film Cameras, at today’s prices. Recalculated every night.

Price $59.99
Cheaper than about 58% of the 749 comparable items (median $70.99).

Specifications

No published specifications for this item yet.

Questions about this item

Can I develop fast, medium and slow black-and-white films together in the same Diafine tank without changing the development time?

Yes, the two-bath formula processes fast, medium and slow films simultaneously with a single time, eliminating the need for separate runs or time adjustments.

How can I verify the developer is still active after mixing the concentrate into one gallon of working solution?

Process a test strip of known film at the recommended time and temperature; normal contrast, full shadow detail and the expected fine-grain appearance confirm the baths are working correctly.

What does the package contain and is anything else required to make the one-gallon working solution?

The bottle holds the two-part concentrate (Solution A and Solution B); you add water to reach one gallon total volume, so only a graduated container and water are needed separately.

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