Moersch Tanol 500 - Staining Developer

Moersch Tanol 500 - Staining Developer
Brand: Moersch Photochemie
Product Code: MTANOL5
Availability: In Stock
Price: €28.27
inc. vat @ 23%
   - OR -   

Moersch Tanol 500 (part A 250ml & part B 250ml) is a staining developer  which provides high resolution, maximum sharpness and fine grain. It is suitable for both tank and dish development and does not require a rinse before development with the exception of Ilford Delta 400, where it is advised.

The stock solutions have a shelf life of 2 to 3 years, even when opened. Extremely high capacity as dilutions are only 1 part A + 1 part B + 100 parts water. One kit of Tanol 500 can develop 90 rolls of film.

Unlike the familiar staining developers on the basis of pyrogallol, auto-oxidisation of Tanol starts a lot later. This is an advantage when developing N+ based on the zone system. During long development times you don’t need to worry about early exhaustion.

As with pyrogallol a dye builds up proportionally to the silver density. The ‘Tanol stain’ is less obvious to see than the ‘pyro stain’ but just as effective. The dye accumulates between the grains of silver and lessens the impression of graininess that necessarily occurs with all sharpness developers.

On variable contrast paper, the stain acts as an additional soft filter in the higher densities, therefore retaining important detail which may be lost with ordinary developers.

This developer is especially interesting for large format negatives. The results will be suitable for conventional development as well as alternative development techniques such as platinotype and cyanotype. When using contact printing techniques of the early days of photography, you need negatives with dense highlights and a straight lined density curve. The contrast range should be between 1.7 and 2.0 logD. When printing, expose with daylight or UV light. Since the stain blocks UV light, you can print straight from the original negative.

We recommend using Rollei RXN Neutral Fixer with staining developers such as Tanol as an ordinary acid fix can reduce the staining effect.

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