Dr. Ph. Martin's 400250-25H  Hydrus Fine Art Watercolor, 1.0 oz, Hansa Yellow Medium (25H) Hansa yellow medium (25h) in a 1.0 Oz glass bottle with dropper Fine art quality watercolor with the same brilliance and permanence as traditional tubes Brilliant, lightfast, transparent liquid watercolor for use on paper or canvas 36 Unique colors available across three different sets Made in the USA