diff --git a/api/fair_ontology.py b/api/fair_ontology.py
index a98a372..c31dfe5 100644
--- a/api/fair_ontology.py
+++ b/api/fair_ontology.py
@@ -34,6 +34,7 @@
     "MilliL-PER-MIN": "VolumeFlowRate",
     "M3-PER-SEC": "VolumeFlowRate",
     "KiloGM-PER-SEC": "MassFlowRate",
+    "GM-PER-MIN": "MassFlowRate",
     "W": "Power",
     "KiloW": "Power",
     "MilliW": "Power",
@@ -53,6 +54,7 @@
     "ANGSTROM": "Length",
     "M-PER-MIN": "LinearVelocity",
     "M-PER-SEC": "LinearVelocity",
+    "MilliM-PER-MIN": "LinearVelocity",
     "MicroM-PER-MIN": "LinearVelocity",
     "MicroM-PER-SEC": "LinearVelocity",
     "DEG_C": "CelsiusTemperature",
@@ -115,6 +117,8 @@
     "m3/s": "M3-PER-SEC",
     "m³/s": "M3-PER-SEC",
     "kg/s": "KiloGM-PER-SEC",
+    # Powder feed rate (directed energy deposition).
+    "g/min": "GM-PER-MIN",
     "W": "W",
     "watt": "W",
     "watts": "W",
@@ -132,6 +136,7 @@
     "m": "M",
     "cm": "CentiM",
     "mm": "MilliM",
+    "mm/min": "MilliM-PER-MIN",
     "um": "MicroM",
     "micron": "MicroM",
     "microns": "MicroM",
diff --git a/api/tests/test_fair_ontology.py b/api/tests/test_fair_ontology.py
index c2978c1..a904310 100644
--- a/api/tests/test_fair_ontology.py
+++ b/api/tests/test_fair_ontology.py
@@ -108,6 +108,20 @@ def test_sub_second_times(self):
         self.assertEqual(infer_qudt("µs")["qudt_unit"], QUDT_UNIT_BASE + "MicroSEC")
         self.assertEqual(infer_qudt("ps")["qudt_unit"], QUDT_UNIT_BASE + "PicoSEC")
 
+    def test_directed_energy_deposition_units(self):
+        # LP-DED scan speed, powder feed and layer/hatch dimensions.
+        self.assertEqual(
+            infer_qudt("mm/min"),
+            {"qudt_unit": QUDT_UNIT_BASE + "MilliM-PER-MIN",
+             "qudt_quantity_kind": QUDT_QK_BASE + "LinearVelocity"},
+        )
+        self.assertEqual(
+            infer_qudt("g/min"),
+            {"qudt_unit": QUDT_UNIT_BASE + "GM-PER-MIN",
+             "qudt_quantity_kind": QUDT_QK_BASE + "MassFlowRate"},
+        )
+        self.assertEqual(infer_qudt("mm")["qudt_unit"], QUDT_UNIT_BASE + "MilliM")
+
     def test_etch_rate_has_quantity_kind_only(self):
         # qudt.org has no NanoM-PER-MIN unit individual.
         self.assertEqual(infer_qudt("nm/min"), {"qudt_quantity_kind": QUDT_QK_BASE + "LinearVelocity"})
diff --git a/web/app/equipment/register/page.tsx b/web/app/equipment/register/page.tsx
index c797a52..73bd69e 100644
--- a/web/app/equipment/register/page.tsx
+++ b/web/app/equipment/register/page.tsx
@@ -47,6 +47,7 @@ const UNIT_OPTIONS = [
   { value: "SLPM", label: "SLPM" },
   { value: "mL/min", label: "mL/min" },
   { value: "g", label: "g" },
+  { value: "g/min", label: "g/min" },
   { value: "kg/s", label: "kg/s" },
   { value: "m^3/s", label: "m^3/s" },
   { value: "V", label: "V" },
@@ -66,6 +67,8 @@ const UNIT_OPTIONS = [
   { value: "°", label: "° (degrees)" },
   { value: "nm", label: "nm" },
   { value: "um", label: "um" },
+  { value: "mm", label: "mm" },
+  { value: "mm/min", label: "mm/min" },
   { value: "nm/min", label: "nm/min" },
   { value: "Å", label: "Å" },
   { value: "Å/min", label: "Å/min" },