Heidelberg® Saphira Wash WH23 has been developed as an economical general-purpose water miscible roller and blanket wash suitable for most standard offset printing applications. Heidelberg Saphira Wash WH23. It has been specially developed as a general-purpose wash product to satisfy the demands from most print shops. Unique features within this wash product is that it has been formulated and blended to offer reduced swell and improved odour with excellent ink solvency power, ensuring economy and performance are not compromised. Versatile formula is normally utilized for manual applications, cleans ink quickly and effectively whilst leaving little residue.