XRF test per item. Back Catalog number: XRF Manufacturer: Sampling Systems Availability: In the manufacturer's stock Price on request - + Recommended 8700S-04 200mm Sieve. 850micron Price on request 8700B-10 200mm Sieve. 250micron Price on request 8644T-100 100 * 100mm PTFE (Teflon) Price on request