Can I bring my samples on-site to be vitrified at PNCC? September 06, 2022 19:10 Updated Please see our screening services to answer this question. We list how to ship these types of samples in Shipments under step 3 on the Access webpage. Related articles What type of screening services does PNCC offer? What are “Krios-ready” or pre-screened grids? What are the maximum hours that can be scheduled? How does PNCC prioritize groups for staff-assisted grid optimization and/or screening services? Who can apply?