Container for culturing, micro manipulation and identification of small specimens

A polymer specimen container comprising:

• a specimen carrier comprising a bottom base that is externally flat and connected to a wall, said wall comprising an open hollow wall structure having reinforcements, said reinforcements being recesses and ridges configured to provide stable support to the specimen carrier, said bottom base configured to contact a heated plate,
• wherein said open hollow wall structure comprises an innermost wall and an outermost wall,
• wherein said open hollow wall structure comprises a non-closed wall persisting in more than one plane, and
• wherein said outermost wall of said open hollow wall structure has a lowest level above a lowest level of said bottom base, and further comprises:
• a lid comprising a top and a bottom surface, wherein said top surface comprises protrusions complementary to at least one of said recesses or ridges in said open hollow wall structure, thereby avoiding scratching of the bottom base during stacking of said polymer specimen container;
• wherein said flat bottom base that is externally flat comprises one or more individually separated wells for holding liquid medium sustaining the specimens during the procedures and,
• wherein said specimen carrier is configured to hold spermatozoa, sperm precursor cells, oocytes, pre-implantation embryos, zygotes, blastocysts, embryonic cells or stem cells during In Vitro Fertilization (IVF) at 37 degrees Celsius.