{"product_id":"grumbacher-oil-paint-burnt-sienna-deep-37ml-pre-tested-single-pigment-lightfast","title":"Grumbacher Oil Paint Burnt Sienna Deep 37ml — Pre-Tested, Single-Pigment, Lightfast","description":"\u003cp\u003e\u003cstrong\u003eGrumbacher Pre-Tested Oil Paint in Burnt Sienna Deep is a professional-grade, single-pigment oil colour engineered for consistent masstone, mixing performance, and archival lightfastness.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMade in the USA and formulated for artists who demand predictable results, this 37 ml (1.25 oz) tube delivers a warm, semi-opaque brown richer than typical umbers. Each colour in the Pre-Tested line is hand-painted, analyzed, and adjusted by Grumbacher technicians for pigment dispersion, viscosity, drying character, and mix behavior so you can rely on tone and strength across sessions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Burnt Sienna Deep behave in mixes and glazes?\u003c\/h3\u003e\n\u003cp\u003eBurnt Sienna Deep is designed to mix cleanly without muddying or graying other pigments. Its controlled tinting strength and single-pigment formulation make it predictable in both transparent glazes and opaque mixes, allowing you to alter warmth and depth without losing chroma.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWarm, semi-opaque brown that retains vibrancy when mixed\u003c\/li\u003e\n  \u003cli\u003eSingle-pigment formula for consistent tinting strength\u003c\/li\u003e\n  \u003cli\u003eSuitable for thin glazes and heavier impasto work\u003c\/li\u003e\n  \u003cli\u003eResists graying when blended with cool colours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat technical qualities should an artist expect from this 37 ml tube?\u003c\/h3\u003e\n\u003cp\u003eEach tube undergoes pre-testing for masstone, pigment dispersion, viscosity, drying properties, and lightfastness. Results: even consistency out of the tube, reliable handling characteristics on palette, and a lightfast rating indicating excellent resistance to fading.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-tested masstone and draw-downs for dependable colour payoff\u003c\/li\u003e\n  \u003cli\u003eBalanced viscosity for easy application and brushwork control\u003c\/li\u003e\n  \u003cli\u003eFastidious pigment dispersion reduces streaks and blotching\u003c\/li\u003e\n  \u003cli\u003eLightfast rating of 1 (excellent) for long-term colour retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can Burnt Sienna Deep improve portrait and landscape palettes?\u003c\/h3\u003e\n\u003cp\u003eBecause of its warmer, richer tone, Burnt Sienna Deep is an excellent foundation for earth tones in portraits and natural scenes. It deepens shadows, warms flesh tones without overpowering, and pairs well with ultramarines, siennas, and zinc or titanium whites to obtain subtle neutrals and midtones.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhances skin tone warmth and shadow modelling\u003c\/li\u003e\n  \u003cli\u003eForms clean neutrals when combined with cool blues\u003c\/li\u003e\n  \u003cli\u003eWorks as an underpainting colour for warm atmospheres\u003c\/li\u003e\n  \u003cli\u003eUseful for glazing to increase depth without heavy opacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Grumbacher Pre-Tested Burnt Sienna Deep is aimed at students, teachers, conservators, and professional painters who want a laboratory-checked, museum-minded oil colour. If you require consistent masstone, high tinting power, and excellent lightfastness from a compact 37 ml tube, this paint gives dependable studio performance at an accessible price.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Burnt Sienna Deep a single-pigment colour?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Most Pre-Tested colours, including Burnt Sienna Deep, are single-pigment formulations for consistent tinting strength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this paint fade over time?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—this Grumbacher colour carries a lightfast rating of 1 (excellent), indicating strong resistance to fading under normal display conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Grumbacher","offers":[{"title":"Default Title","offer_id":55249469964625,"sku":"B000YQILLU","price":29.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/grumbacher-burnt-sienna-deep-front-tube.jpg?v=1791635823","url":"https:\/\/craftiche.co.uk\/products\/grumbacher-oil-paint-burnt-sienna-deep-37ml-pre-tested-single-pigment-lightfast","provider":"Craftiche","version":"1.0","type":"link"}