diff --git a/src/polykin/emulsion/__init__.py b/src/polykin/emulsion/__init__.py
new file mode 100644
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+++ b/src/polykin/emulsion/__init__.py
@@ -0,0 +1,9 @@
+# PolyKin: A polymerization kinetics library for Python.
+#
+# Copyright Hugo Vale 2024
+
+"""
+This module implements methods for emulsion polymerization systems.
+"""
+
+from .nbar import *