Livio Vodopivec

Brown TONER (odourless) with thiourea. nr 401 X

For all papers.

Chemicals:

Solution A

Thiourea (thiocarbamide)2,5 g

Potassiumbromide20,0 g

Water to make250 ml

Solution B

Sodiumhydroxide5,0 g

Water to make250 ml

Instructions:

Solution A and B are stocksolutions. Keeping properties: Solution A - 6 month, and for solution B - more than 6 months. Before use A and B should be mixed together, and the keeping properties are only one month.

6 parts of A + 1 part of B gives a yellow-brown tone.Equal part A and B gives sepia tone.

The greater the proportion of B the colder the tone produced.

**Before toning the photo must be bleached in a ferrocyanide
bleacher.**(402 X or 403 X).

The picture must be fixed and well rinsed before bleached. After bleaching it must be well rinsed.

* *

*The bottles must be well marked and keppt out of reach of
children.*