1 Canister 12cm and 1 holder for 3 POCIS Back Catalog number: CH-3P.A.1 Availability: In the manufacturer's stock Price on request - + Recommended POCIS.HLB.90.55.50 AttractSPE® POCIS HLB (50 POCIS + empty fritted cartridges) Price on request POCIS.PEST.KIT.50 AttractSPE® POCIS Pesticides Kit, 50 POCIS + empty fritted cartridges Price on request POCIS.HLB.10.4.A.3 AttractSPE® POCIS HLB for Groundwater (3 pocis of 10cmx4cm) Price on request