Samba Super Concentrate Grass Line Marker is a premium quality heavy duty water resistant grass-marking concentrate. It contains added binders and pigments that offer the ultimate durability and brightness. It is designed for use with ALL spray or transfer wheel marking machines. As a quick guide from the FA the following colours are recommended when marking pitches: Blue U11 & U12 (9v9) White adult (11v11) Product details: Initial mark 1:5 Over mark up to 1:8 Comes in 10 litre containers. "