FAQ – Watercolour

Product Quality and Ingredients

Do you add a preservative to your watercolours?

Regarding the use of preservatives, the simple answer is yes, as otherwise microbes will eat certain ingredients either causing mould or gas or both, then causing the tubes to inflate with methane and burst.

Do MH Watercolours contain Oxgall?  

No, the watercolours in the MH line contain Oxgall.

Do MH Watercolours contain Gelatin?  

All of our watercolours are Gelatine free, the only bone based derivative would be PBk9 which is a bone black in both Ivory Black and in Paynes Grey.

What kind of pigments are used in Michael Harding watercolour paints?

A4: Michael Harding uses the finest pigments, including traditional and modern pigments, to achieve a broad and balanced palette. The emphasis is on purity and intensity of colour.

What ingredients are used in Michael Harding watercolour paints?

Michael Harding watercolour paints are made using high-quality honey as a binder, which helps in achieving smooth application and easy re-wetting of the paint. The paints also contain pure pigments that ensure vibrant and rich colours.

How does Michael Harding ensure the quality of their pigments?

Michael Harding maintains pigment quality through rigorous quality control processes, including the use of a UV-generating light box for accelerated stability testing. This ensures that the pigments used are stable and meet the high standards required for professional-grade paints. The expertise gained from over 40 years of producing oil paints also contributes to the consistent quality of their watercolours

Are there any fugitive pigments in the Michael Harding range?

Yes, the range includes some historically popular but fugitive pigments such as Alizarin Crimson (PR83) and Rose Madder (NR9). These pigments are known to fade over time when exposed to light. Artists should be aware of this when selecting colours for artworks intended for long-term display​.

How do Michael Harding watercolours perform in terms of lightfastness?

Most of the pigments used in Michael Harding watercolours have excellent lightfast ratings, ensuring the longevity of the artwork. However, some modern pigments included in the range, such as PR177, have variable lightfastness depending on their formulation and dilution. It is advisable to check the lightfastness of specific colours, especially for works intended for sale or long-term display​

What is the pigment load like in Michael Harding watercolour paints?

Michael Harding watercolour paints are known for their exceptionally high pigment load. This means that they provide intense and vibrant colours even with minimal application. The high pigment concentration allows for extended coverage and strong colour saturation, making them highly economical for artists who use a lot of paint in their work​.

Are Michael Harding watercolours granulating?

Some Michael Harding watercolour paints exhibit granulation, which adds texture to the paint when applied. For example, the colour “Titanium Buff” is particularly noted for its granulating properties, making it ideal for creating natural-looking textures and effects in landscape painting and other applications​

How are the lightfastness ratings of Michael Harding watercolours determined?

The lightfastness ratings of Michael Harding watercolours are determined through rigorous testing, including accelerated UV exposure tests. This ensures that the colours maintain their vibrancy and do not fade over time when exposed to light. Most colours in the range have excellent lightfast ratings, making them suitable for professional use.