50 * 50mm HDPE Opaque Back Catalog number: 8644H-50 Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700B-11 200mm Sieve. 180micron Price on request 8509A-500 Aluminium Case 500 * 225 * 75 Price on request 8703A-15 15ml Automatic burette Price on request