The present invention concerns a single use aseptic kit comprising: a disaggregation module for receipt and processing of material comprising solid mammalian tissue; and a stabilisation module for storing disaggregated product material, wherein each of said modules comprises one or more flexible containers connected by one or more conduits adapted to enable flow of the tissue material there between; and wherein each of said modules comprises one or more ports to permit aseptic input of media and/or reagents into the one or more flexible containers. The invention further relates to an automated device for semi-automated aseptic disaggregation and/or enrichment and/or stabilisation of cells or cell aggregates from mammalian solid tissue comprising a programmable processor and the single use aseptic kit. The invention further relates to a semi-automatic aseptic tissue processing method.