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Buy 3 & get a 4th Free on Winsor & Newton Cotman Watercolour 8ml, offer ends Fri 22 March!

Buy 3 & get a 4th Free on Winsor & Newton Cotman Watercolour 8ml, offer ends Fri 22 March!

Watercolour Mediums

Discover a whole new world of Watercolour Mediums with ArtStore Online. At ArtStore Online, whether you are an avid painter, illustrator or a complete beginner, we will strive to help you with whatever you're after! We strive to bring you the best Watercolour Medium brands available, and have a wide range of art & craft supplies from trusted and respected brands from around the world, including Art Spectrum, Chroma, Derivan, Gamblin, Matisse, Winsor & Newton and more!    
  • Original price $6.75 - Original price $24.25
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    BJ Master Brush Cleaner & preserver

    The Masters Brush Cleaner and Preserver revitalises old brushes (natural or synthetic). It is non-petroleum based and is non-toxic with a fresh aro...

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    Original price $6.75 - Original price $24.25
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  • Original price $17.15 - Original price $36.00
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    Chroma Incredible Brush Cleaner

    Chroma Incredible Brush Cleaner is ideal for revitalising old hard paintbrushes. This special formula is designed to break through hardened acrylic...

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    Original price $17.15 - Original price $36.00
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  • Original price $22.25 - Original price $61.00
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    Art Spectrum Masking Fluid

    Art Spectrum® Masking Fluid is a pigmented rubber latex-based liquid used for masking out areas. The coloured tint allows the artist to see the are...

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    Original price $22.25 - Original price $61.00
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  • Original price $25.25 - Original price $25.25
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    Winsor & Newton Watercolour Art Masking Fluid 75ml

    Winsor & Newton Watercolour Art Masking Fluid is a liquid with added pigmentation for masking areas of work needing protection when colour is a...

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    Original price $25.25 - Original price $25.25
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  • Original price $17.55 - Original price $43.95
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    NAM Masking Fluid

    Economical way to purchase masking fluid. Mask against watercolour, airbrush etc. Once dried must be removed within 6 hours. Use water to dilute €“...

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    Original price $17.55 - Original price $43.95
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  • Original price $30.75 - Original price $56.25
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    Art Spectrum Brush and Hand Cleaner

    Non-toxic, non-abrasive, biodegradable, containing no harsh solvents. Cleans and restores old brushes that are stiff with dried up paint.

    Original price $30.75 - Original price $56.25
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  • Original price $38.25 - Original price $38.25
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    Art Spectrum Art Clean - Multi Purpose Brush Cleaner 500ml

    Art Clean is a natural, biodegradable, citrus-scented cleaning solution for brushes, studio equipment and other uses. Art Spectrum® Art Clean is si...

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    Original price $38.25 - Original price $38.25
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  • Original price $25.25 - Original price $25.25
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    Winsor & Newton Watercolour Colourless Masking Fluid 75ml

    A colourless liquid for masking areas of work needing protection when colour is applied in broad washes. Specifically designed for soft sized paper...

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    Original price $25.25 - Original price $25.25
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  • Original price $17.50 - Original price $50.50
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    Art Spectrum Gum Arabic

    Art Spectrum® Gum Arabic increases the brilliance, gloss and transparency of watercolour and gouache paints, helping give extra depth to your colou...

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    Original price $17.50 - Original price $50.50
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  • Original price $27.00 - Original price $27.00
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    Winsor & Newton Watercolour Granulation Medium 75ml

    Granulation Medium gives a mottled or granular appearance to colours which usually give a smooth wash, such as Winsor Red or Winsor Blue. By adding...

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    Original price $27.00 - Original price $27.00
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  • Original price $15.50 - Original price $35.25
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    Art Spectrum Liquid Spectrum Extender Medium

    Restores adhesion and water-resistance in heavily diluted washes. May also be added to gouache or watercolour washes to provide a level of water r...

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    Original price $15.50 - Original price $35.25
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  • Original price $23.75 - Original price $23.75
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    Winsor & Newton Gum Arabic 75ml

    A pale coloured solution that increases the gloss and transparency of water colour. It can be thinned with water.

    Original price $23.75 - Original price $23.75
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  • Original price $27.00 - Original price $27.00
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    Winsor & Newton Watercolour Lifting Preparation 75ml

    Lifting Preparation allows dry washes, including staining colours, to be more easily lifted from paper with a wet brush or sponge. It is an ideal p...

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    Original price $27.00 - Original price $27.00
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    Winsor & Newton Watercolour Iridescent Medium 75ml

    This medium gives pearlescent or glitter effects to your water colours. It can be mixed directly with water colours or applied over a dried wash.

    Original price $27.00 - Original price $27.00
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  • Original price $20.85 - Original price $20.85
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    Gamblin PVA Size 237ml

    Diluted with distilled water, PVA size is a contemporary size for fabric support. Conservation scientists recommend painters use neutral pH PVA s...

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    Original price $20.85 - Original price $20.85
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  • Original price $20.85 - Original price $22.75
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    Molotow Grafx Masking Liquid Pens

    Molotow Grafx Masking Liquid Pens allow you to apply masking liquid easily without needing a brush. Molotow Grafx Masking Liquid is water-based col...

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    Original price $20.85 - Original price $22.75
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  • Original price $10.00 - Original price $10.00
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    Art Spectrum Talc 500gm

    Talc is used for many applications in woodworking. From making gesso to be used as a decorative finish or as a grain filler, etc. to use as a lubri...

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    Original price $10.00 - Original price $10.00
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  • Original price $37.75 - Original price $37.75
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    Winsor & Newton Ox Gall 75ml

    A wetting agent used to improve flow when mixed directly with water colours. It can also be used on very hard sized papers to reduce surface tension.

    Original price $37.75 - Original price $37.75
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  • Original price $27.00 - Original price $27.00
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    Current price $27.00

    Winsor & Newton Watercolour Permanent Masking Medium 75ml

    This medium is used to mask specific areas of paper, making them resistant to water. It can also be mixed with water colours and is ideal for isola...

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    Original price $27.00 - Original price $27.00
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    Winsor & Newton Watercolour Texture Medium 75 ml

    Texture medium contains fine particles and can be used to give the impression of depth and structure to water colour paintings. It is ideal for emp...

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    Original price $27.00 - Original price $27.00
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  • Original price $32.75 - Original price $32.75
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    Holbein Masking Pen 25ml

    Discover the creative potential of Holbein Masking Pen. The perfect artist's tool for blocking out—or reserving areas of artwork, this pen allows y...

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    Original price $32.75 - Original price $32.75
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  • Original price $27.00 - Original price $27.00
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    Winsor & Newton Watercolour Blending Medium 75ml

    This liquid is used to slow the drying rate of water colours allowing more time for blending. It is particularly useful in hot climates where artis...

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    Original price $27.00 - Original price $27.00
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  • Original price $46.00 - Original price $46.00
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    Winsor & Newton Watercolour Aquapasto 60ml

    Aquapasto is a transparent gel medium that reduces flow and gives a bodied effect to water colour and gouache.

    Original price $46.00 - Original price $46.00
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    Current price $46.00