[
    {
        "medium_id": "9a",
        "compound": "Agar",
        "g_l": 8,
        "mmol_l": 23.7862,
        "optional": "no"
    },
    {
        "medium_id": "9a",
        "compound": "Baker's yeast",
        "g_l": 2.5,
        "mmol_l": null,
        "optional": "no"
    },
    {
        "medium_id": "9a",
        "compound": "CaCl2 x 2 H2O",
        "g_l": 1.36,
        "mmol_l": 9.25076,
        "optional": "no"
    },
    {
        "medium_id": "9a",
        "compound": "Vitamin B12",
        "g_l": 0.0005,
        "mmol_l": 0.000368895,
        "optional": "no"
    },
    {
        "medium_id": "9a",
        "compound": "Distilled water",
        "g_l": null,
        "mmol_l": null,
        "optional": "no"
    }
]