Hahnemühle Photo Rag Baryta 315gsm 64" 1626mm x 12m

What are OBAs and why does OBA-free matter?

Optical Brightening Agents (OBAs) are chemical compounds added to paper to increase perceived whiteness. They work by absorbing ultraviolet light and re-emitting it in the blue spectrum, “tricking” the eye into seeing a brighter, cooler white.

While OBAs provide an initial “pop,” they are subject to fluorescence quenching, meaning they will degrade over time. As these chemicals break down, the paper can lose its brightness and return to its natural yellowish tone, which will affect the colour balance of your print.

Hahnemühle Photo Baryta is a premium OBA-free paper, meaning it contains no artificial whiteners. Instead, it relies on high-purity base materials and the natural reflectance of the baryta coating.

Benefits of OBA-free papers:

• Maximum Archival Stability: Without chemicals to degrade, the paper base remains stable for centuries.
• Natural Tonal Range: Provides a sophisticated, warm-white base that complements skin tones and classic black-and-white photography.
• Consistency: Your prints will look the same under different lighting conditions and won’t “yellow” as chemicals fade.
• Museum Standard: Preferred by galleries and collectors who prioritize permanence and long-term investment value.

FAQs Hahnemühle Photo Rag® Baryta 315gsm

Is Photo Rag Baryta suitable for professional photography?

Yes. It combines the soft feel of cotton rag with a baryta coating to produce deep blacks, excellent contrast and smooth tonal transitions.

Does it work with Epson SureColor printers?

Yes. Photo Rag Baryta is fully compatible with Epson SureColor printers and performs exceptionally well with UltraChrome pigment ink systems.

Is it compatible with Canon imagePROGRAF PRO printers?

Yes. It pairs beautifully with Canon imagePROGRAF PRO series printers and is ideal for use with Canon pigment inks.

Can it be used with HP DesignJet Z series printers?

Yes. Photo Rag Baryta works very effectively with HP DesignJet Z series printers and is optimised for pigment-based ink systems.

What makes baryta paper different from standard gloss papers?

The baryta coating enhances contrast and depth while maintaining a natural photographic look, and is similar to traditional darkroom prints.

Is this paper suitable for black & white printing?

Absolutely. It delivers excellent neutrality and smooth tonal gradation, making it ideal for monochrome work.

Is there an ICC profile for this media?

Yes. ICC profiles are available and recommended to achieve accurate colour reproduction and consistent results. Download here. 

Is it suitable for fine art and exhibition prints?

Yes. Its cotton base and baryta coating make it ideal for gallery display, limited editions and museum-quality output.

What is a Baryta Coating?

Baryta coating is a specialized layer of barium sulphate applied to premium inkjet and darkroom papers to produce a smooth, satin-gloss finish with exceptional image contrast, sharpness, and deep black density (D-Max). Designed to mimic classic fibre-based prints, this archival coating enhances image brightness and acts as a protective barrier, preventing chemical impurities within the paper fibres from migrating into the image layers.

Is Baryta paper archival?

Yes, Baryta paper is considered the gold standard for archival photo printing. Because the barium sulphate layer is chemically inert and pH-neutral, it prevents the paper base from yellowing over time. This coating ensures a long-lasting print that resists environmental degradation, making it the preferred choice for museum-grade displays and fine art photography that requires a lifespan of 100+ years. Photo Rag Baryta is acid and lignin free, offering museum-grade longevity, and conforms to ISO9706

What is the difference between Alpha-Cellulose and Cotton Rag paper bases?

The primary difference lies in the source material: alpha-cellulose is made from high-grade, purified wood pulp, while cotton rag is made from 100% cotton linters. Cotton rag is often considered the “gold standard” for museum-grade prints due to its natural strength, soft tactile feel, and inherent archival stability. Alpha-cellulose papers are a more cost-effective alternative; they are chemically refined to remove lignin and acid, providing a similarly high-quality, archival surface that is generally sturdier and smoother, making it ideal for high-volume portfolios and modern photography.

What are cotton linters and why are they used in paper?

Cotton linters are the short, high-purity cellulose fibres that remain on the cotton seed after the initial harvest. Although they are a byproduct of the textile industry, they are a primary raw material for our archival-grade papers. These fibres are naturally free of both lignin and acid, which prevents paper from yellowing or becoming brittle over time. When processed into a pulp, linters create a dense, uniform, and exceptionally durable base that provides the soft, “luxurious” feel characteristic of  high-end fine art and photography papers.