diff --git a/src/components/medications/__tests__/inventory-section-dates.test.tsx b/src/components/medications/__tests__/inventory-section-dates.test.tsx
index b52cbcff2..a35c71485 100644
--- a/src/components/medications/__tests__/inventory-section-dates.test.tsx
+++ b/src/components/medications/__tests__/inventory-section-dates.test.tsx
@@ -124,6 +124,22 @@ describe("<InventorySection> — item-row dates", () => {
     expect(html).toContain("Haltbar bis 01.06.2027");
   });
 
+  it("separates the two dates when the row carries both", () => {
+    seedItems([
+      {
+        ...BASE,
+        firstUseAt: "2026-06-12T00:00:00.000Z",
+        printedExpiry: "2027-06-01T00:00:00.000Z",
+      },
+    ]);
+    const html = render(
+      <InventorySection medicationId="med-1" unitsPerDose={1} />,
+    );
+    expect(html).toContain("Geöffnet 12.06.2026");
+    expect(html).toContain("Haltbar bis 01.06.2027");
+    expect(html).toContain("<span>·</span>");
+  });
+
   it("shows no date line when neither date is recorded", () => {
     // Absence reads as absence — no placeholder, no invented date.
     seedItems([{ ...BASE, firstUseAt: null, printedExpiry: null }]);
diff --git a/src/components/medications/sections/inventory-section.tsx b/src/components/medications/sections/inventory-section.tsx
index aac3bba24..6473f207f 100644
--- a/src/components/medications/sections/inventory-section.tsx
+++ b/src/components/medications/sections/inventory-section.tsx
@@ -505,6 +505,7 @@ export function InventorySection({
                       })}
                     </span>
                   )}
+                  {item.firstUseAt && item.printedExpiry && <span>·</span>}
                   {item.printedExpiry && (
                     <span>
                       {t("medications.detail.bestand.expiresOn", {
diff --git a/src/lib/medications/inventory/state-machine.ts b/src/lib/medications/inventory/state-machine.ts
index ed6fd92f5..10b49884c 100644
--- a/src/lib/medications/inventory/state-machine.ts
+++ b/src/lib/medications/inventory/state-machine.ts
@@ -37,7 +37,12 @@
  *   - AMPOULE — the member a punctured injectable reservoir (ampoule or
  *     multi-dose vial) lands on; there is no separate VIAL member. Same
  *     physical fact as the pen: the barrier is broken and the contents
- *     are exposed.
+ *     are exposed. The enum cannot tell that reservoir apart from a
+ *     carton of single-use glass ampoules, where the clock would be
+ *     wrong for the same reason it was wrong on a blister; the kind is
+ *     never auto-selected, so choosing it is a deliberate statement
+ *     about a container that was opened, and the opening date is
+ *     editable when it turns out not to be.
  *   - BLISTER — every tablet sits in its own sealed foil cavity.
  *     Pressing out tablet 1 does nothing to tablets 2..n. The carton
  *     expiry is the only expiry.