About the 5 Liter Ilford Multigrade The 5 Liter Ilford Multigrade comes as a top-of-the-range liquid developer concentrate. It is ideal for processing both resin coated (RC) and fiber based (FB) black-and-white photographic papers. Overall, this product's usability reaches its summit when used with Ilford Multigrade paper, producing superior results. Key Features of 5 Liter Ilford Multigrade It's a liquid developer concentrate Suited for both RC and FB black-and-white photographic papers It touts excellent shelf-life Produces neutral image tones Has a generous volume of 5 liters What Comes in the Box? When you purchase the 5 Liter Ilford Multigrade, you get: The 5 Liter Ilford Multigrade A two-year warranty Developer Dilution Flexibility The Ilford Multigrade developer is supplied as a concentrate, and it offers flexibility in dilution. You can typically dilute it at 1+9, but for better development control and economy, a 1+14 dilution can also be undertaken.