MIRPHAB is an EU-funded (Horizon 2020) consortium aiming to produce a fabrication platform with open access for fast mid-IR device prototyping. A range of building blocks can be assembled into a custom gas sensor. Lasers can be ICLS or QCLs, there can be SOI, SiGe/Si or Ge/SiGe waveguide technologies and detectors can be specified from Type-II In/As/GaSb superlattice (T2SL), InAsSb QCD and photoacoustic cells.