The resin 1:1 mix ratio by volume, kit volume is volume mixed, is the total volume 1L kit : 500ML resin A + 500ML hardener B (Total 1L) 2L kit : 1L resin A + 1L hardener B (Total 2L) 4L kit : 2L resin A + 2L hardener B (Total 4L) 8L kit : 4L resin A + 4L hardener B (Total 8L) Tips for operation This product is 1:1 fast cure resin, each time mixed, pour No more than 150ml total, (that is 75ml A + 75ml B, A must be ≥ B), with a thickness range of ≤1.2" to avoid bursting. and you can go as deep as you like,just make sure to work in stages. stay under 1.2" per pour. after the surface film cures begin your second pour.