The range of Netafim Lilac Dripperlines are made for distributing greywater around the garden. Bioline is a non-pressure compensating, 13mm dripperline. It's large holes allow large particles (eg hair, lint or debris) to pass through the dripper without blocking, making it a suitable greywater diversion device for use on the soil surface. Bioline AS is a pressure compensating, anti-siphon, 13mm dripperline. It is suitable for laying beneath the soil surface in conjunction with greywater treatment systems. UniBioline is a pressure compensating, anti-siphon, dripperline available in 14.4. and 16.4mm tube diameters. It can be used to distribute greywater beneath the soil surface or on the surface under mulch.