After the 'veil' paintings (see 'VAV' in this room), Louis developed his pouring technique in a series of works known as the 'unfurleds'. 'Alpha-Phi' belongs to this series. In these works Louis poured lines of pure colour across the bottom corners of the painting, leaving the centre bare. This became known as the 'one-shot' technique because the artist had only one attempt at a successful pour. If the line went astray there was no second chance. These lines stress the painting's flatness, leading the eye across and out of its surface. This again denies any reading of the painting as an image to be looked into, and insists on its reality as non-representative object.