The ADOX RA-4 Kit is two mono-concentrates (CD developer and BX blix) for colour printing, making 2.5 litres of each.

What it is for

Colour printing at home is simpler than its reputation, and this kit exists to show it: two concentrates, both diluted 1+4 with water, and you are working. No mixing of components, no powders. The maker notes that every colour paper made today is RA-4 compatible, so choosing paper is not a question.

How to dilute it

The working dilution is 1+4 для кожної ванни.

The contents process 5 square metres of paper — roughly one hundred 8×10 inch sheets.

You can mix in portions — but once a bottle is open the remainder begins to age. Plan a printing session that uses the opened concentrate rather than saving it for later.

Storage

Sealed concentrate keeps well but dislikes air: the emptier the bottle, the faster it oxidises. Decant the remainder into a smaller bottle, or displace the air — that is what gets a concentrate to its last measure.

How it compares

The simplest and cheapest way into colour printing there is. The professional Tetenal kits in this same catalogue are built for machine processing with replenishment — overkill for a tray at home.