Our top of the range cartridge is a professional quality paper which is ‘woodfree’ has a ‘Neutral pH’ and is matt surfaced. The exceptional surface quality and heavy grammage means ‘Snowden’ excels in most applications including: illustrative design & sketching with pastels, charcoal & graphite together with screen-printing, litho and watercolour. A1 sheets (594mm x 841mm) 300 GSM.