A J Ludlow Slate Grey Professional Watercolour

Slate Grey is just one of the bright and exquisite Professional Watercolours from A J Ludlow. Being based on a single pigment with excellent permanence and light fastness, ensures that this watercolour’s properties are exceptional. As with all our fine-art materials, Slate Grey watercolour is lovingly handmade in the UK by a skilled artisan from the best ingredients and finest pigments.

Slate Grey professional quality watercolour is supplied in a 15ml glass jar, because:

• The watercolour’s wet mass tone can be seen through the walls of the jar;
• The colour can be easily transferred from the jar to the palette with a palette knife.

But more importantly, there is no need for unnecessary additives or formulation changes to make processing in our colour manufacturing workshop easier, allowing the Slate Grey watercolour made by A J Ludlow to be at the highest pigment concentration and the pigment’s unique properties to be uncompromised. Anything less would be at odds with the brilliance and performance demanded of a professional quality watercolour range.

This Professional Watercolour is prepared using Cornish slate powder, which gives the watercolour its green-shade grey colour, excellent light fastness and opacity. It therefore affords an opaque watercolour (as can be seen in the figure 1a below).

Figure 1: Assessment of (a) the opacity/transparency and (b) staining power of A J Ludlow Slate Grey Professional Watercolour*.

The staining power of the Slate Grey watercolour is on the low side and so the watercolour is easily lifted out (see figure 1b above).

The pigment used in this watercolour is relatively heavy and so Slate Grey Professional Watercolour has a natural tendency to settle on standing. If settlement occurs, just stir the watercolour gently in the jar with a clean palette knife until the watercolour is fully homogeneous again.

Slate Grey Professional Watercolour from A J Ludlow is a single pigmented grey, using Cornish slate powder from one of the oldest quarries in Britain. As a pigment, slate powder has poor tinctorial strength, but Is opaque, so it can be used on the watercolourists’ palette as an opacifier.

Pigment Details: Hydrated Aluminium Silicate / Colour Index Pigment Black 19 ( C.I. PBk19)

Footnote:

*Details of how each watercolour is tested are given in the May 2021 ARTicle “Testing and Assessing the Properties of Watercolours – Part 1 ” (see also Part 2 of the ARTicle, which was published in June 2021).