Search results for 'Mediums'

Renaissance Materials by Dr. David Cranswick.

A thick glazing medium of the 'Old Masters'. Liquid Glass Mediums facilitate building up layers of transparent glaze. Gloss or Satin.

Contains: Damar resin, linseed oil and beeswax (for Satin medium only)

PBk8

Vine Black is derived from charred vines, forming an organic pigment of pure carbon. It has been in use since antiquity, providing a cold black with bluish undertones, which creates a blue-grey when mixed with white. It is a very lightfast, slow-drying colour with a medium tinting strength. It requires a wetting agent to disperse properly, and is not suitable for use in fresco, mortar or cement, as the water-soluble impurities within the pigment can create efflorescence. 

Toxicity: A

Casein is a protein derived from dried milk, which has been used in painting since ancient times. It can be combined with Ammonium Carbonate to form an emulsion, which acts as a durable, non-resoluble binder for pigments, producing a matte, fast-drying paint, similar in appearance to egg tempera. We use casein as a binder for our L. Cornelissen & Son Pigment Colour Charts, as it is a medium that clearly showcases the characteristics and behaviour of each pigment in its pure form. Casein paints can be applied in thin layers to watercolour paper, but would require a more rigid support, such as a gesso panel, to be applied thickly, as the comparative inflexibility of the paint layer means that it can be prone to cracking. Subsequent layers of paint should be more diluted to aid adhesion, and impasto effects are not recommended. It is possible to varnish casein paintings using an acrylic or damar varnish to obtain a glossy surface if desired, although this is not a necessary step. Casein can also be used as an ingredient in gesso, and is a suitable binder for fresco secco techniques.

Some pigments may require a wetting agent in order to fully disperse within the binder, in which case alcohol may be used.

PY42

Mars Yellow is an artificial mineral pigment, a synthetic iron oxide. Mars colours in general replace many natural earth colours to provide pigments without impurities and with great opacity. It has a good tinting strength, is lightfast and stable in all media, and has a medium drying time in oil, creating a strong, flexible paint film.

Toxicity: B

Limeproof

Cobalt Yellow Pigment, Aureolin (PY40). Synthetic Inorganic pigment (Potassium Cobaltinitrate). Transparent. Good tinting strength. Very good Lightfastness. Medium to high oil absorption. Suitable for all media except Lime-fresco. Used since mid 19th Century. Toxicity C.

Please note, unfortunately we are not able to send this product outside the UK.

PBr7

Burnt Umber is a natural earth pigment from Italy, composed of iron oxide, manganese, and aluminium silicate. It is a form of Raw Umber that a has undergone a process of calcination, becoming warmer, more transparent and easier to disperse. It has a good tinting strength, and is very lightfast, quick-drying, and stable in all media. In oils it forms a hard, fairly flexible paint film, though it may be difficult to use in acrylic mediums.

Toxicity: B

PR101

Mars Red is an artificial mineral pigment. Its pigment code, PR101, refers to a wide spectrum of synthetic iron oxide pigments including yellows, oranges, reds, violet-browns and green-browns, which replace many natural earth colours to provide pigments without impurities and with great opacity. It has a good tinting strength, is lightfast and stable in all media, and has a medium drying time in oil.

Toxicity: B

Limeproof

Chrome Yellow Light Pigment (PY34). Synthetic Inorganic pigment (Lead Chromate). Opaque. Good tinting strength. Lightfastness is good, but in some cases unstable as it can darken and turn greenish. Low oil absorption with fast drying rate. Recommended for oils not suitable for water-based mediums. Used since late 18th Century. Toxicity D.

Please note, unfortunately we are not able to send this product outside the UK.

PBr7

Burnt Sienna is a natural earth pigment that has been in use since antiquity. Our Burnt Sienna comes from Tuscany, and is produced by calcining Raw Sienna to temperatures of about 450 degrees Celsius. This process creates a rich warm colour and increases transparency. It also offers a good tinting strength, excellent lightfastness, and a fast to medium drying rate in oil. It is stable in all media but, like umber pigments, may be difficult to disperse in acrylic binders. 

Toxicity B

PB15:3

Phthalo (Mona) Blue is a synthetic organic pigment, Copper Phthalocyanine, that has been in use since the 1930s. It has an extremely high tinting strength and is a staining colour, so cannot successfully be lifted in watercolour. It requires a wetting agent to fully disperse into a medium, and, when used at full strength, a copper sheen is visible in dried paint film. It is transparent, very lightfast, and has a medium-to-slow drying rate in oil.

Toxicity: C

While stocks last

Venice Trupentine is a thick, resinous liquid extracted from the Larix decidua, a larch tree native to Austria. It can impart luminosity, brilliance and gloss when used in mediums and varnishes, and as such it was highly valued during the Golden Age of painting in Venice. It is a slow-drying balsam, which can be diluted with turpentine or placed in a bath of warm water to aid flow.

Beeswax is derived from melted honeycomb, and is available in two grades. Bleached Beeswax Pellets are white, having been bleached by the sun, and are an appropriate choice for using with pale colours, although they may revert to yellow over time. Natural Beeswax Pellets are yellow in colour, and offer a more flexible structure with a higher resin content. Beeswax has a melting point of 63-66°c, and may turn brown if over-heated. It is the most widely used wax in artists' materials, having a wide range of applications. Please see below for more details.

PB35

Cerulean Blue is an artificial mineral pigment that is prepared by heating a mixture of Cobalt Chloride and Potassium Stannate. It was first synthesised in the early nineteenth century, becoming more widely used from 1870, when Rowney introduced Coeruleum Blue into their range. It produces a very bright, clear, and unusually opaque blue, hence its name, which is derived from the Latin for "sky-blue", or perhaps "heaven-blue". It has a very low tinting strength meaning that, although it is stable in all media, some artists may choose to bind it in poppy rather than linseed oil, so that the colour isn't affected by the colour of the binder. It creates a fairly flexible paint film, and is a fast-to-medium drying pigment.

Limeproof

Toxicity: B

PR105

Lead Red is an early articficial pigment that dates back to antiquity. It is created by heating Lead White or Litharge at a constant temperature of 480ºC over a prolonged period of time. It is a fast-drying colour, with good tinting strength and opacity, and has been widely used as an underpaint for gilding and in industry. However, it is highly toxic and generally unstable, so has fallen out of use in favour of Cadmium pigments. The acid in linseed oil causes Lead Red to darken, and it can solidify when stored in a tube. In water-based mediums, it can turn black.

Toxicity: D 

Please note, unfortunately we are not able to send this product outside the UK.

Canada Balsam is an oleoresin, meaning that it is a mixture of essential oils and resin. It comes from the fir tree Abies balsamea, native to Canada and the eastern states of North America. It is notable for its pale colour, clarity and gloss, making it a useful ingredient in recipes for oil-painting mediums.