diff --git a/api/fair_ontology.py b/api/fair_ontology.py
index a883c10..a98a372 100644
--- a/api/fair_ontology.py
+++ b/api/fair_ontology.py
@@ -31,6 +31,7 @@
 QUDT_UNITS: dict[str, str | None] = {
     "CentiM3-PER-MIN": "VolumeFlowRate",
     "L-PER-MIN": "VolumeFlowRate",
+    "MilliL-PER-MIN": "VolumeFlowRate",
     "M3-PER-SEC": "VolumeFlowRate",
     "KiloGM-PER-SEC": "MassFlowRate",
     "W": "Power",
@@ -108,6 +109,8 @@
     "slpm": "L-PER-MIN",
     "L/min": "L-PER-MIN",
     "lpm": "L-PER-MIN",
+    "mL/min": "MilliL-PER-MIN",
+    "ml/min": "MilliL-PER-MIN",
     "m^3/s": "M3-PER-SEC",
     "m3/s": "M3-PER-SEC",
     "m³/s": "M3-PER-SEC",
diff --git a/api/tests/test_fair_ontology.py b/api/tests/test_fair_ontology.py
index 8237811..c2978c1 100644
--- a/api/tests/test_fair_ontology.py
+++ b/api/tests/test_fair_ontology.py
@@ -81,6 +81,11 @@ def test_registration_unit_options(self):
             {"qudt_unit": QUDT_UNIT_BASE + "M3-PER-SEC",
              "qudt_quantity_kind": QUDT_QK_BASE + "VolumeFlowRate"},
         )
+        self.assertEqual(
+            infer_qudt("mL/min"),
+            {"qudt_unit": QUDT_UNIT_BASE + "MilliL-PER-MIN",
+             "qudt_quantity_kind": QUDT_QK_BASE + "VolumeFlowRate"},
+        )
 
     def test_ambiguous_and_unknown_units_are_not_guessed(self):
         self.assertEqual(infer_qudt("A"), {})
diff --git a/web/app/equipment/register/page.tsx b/web/app/equipment/register/page.tsx
index b22fbd0..c797a52 100644
--- a/web/app/equipment/register/page.tsx
+++ b/web/app/equipment/register/page.tsx
@@ -45,6 +45,7 @@ const UNIT_OPTIONS = [
   { value: "Pa", label: "Pa" },
   { value: "sccm", label: "sccm" },
   { value: "SLPM", label: "SLPM" },
+  { value: "mL/min", label: "mL/min" },
   { value: "g", label: "g" },
   { value: "kg/s", label: "kg/s" },
   { value: "m^3/s", label: "m^3/s" },