diff --git a/pint_pandas/testsuite/test_issues.py b/pint_pandas/testsuite/test_issues.py
index fbcd0c6..6cb15f4 100644
--- a/pint_pandas/testsuite/test_issues.py
+++ b/pint_pandas/testsuite/test_issues.py
@@ -229,3 +229,16 @@ def test_dequantify(self):
         )
         result = df.pint.dequantify()
         tm.assert_frame_equal(expected, result)
+        
+class TestIssue217(BaseExtensionTests):
+    
+    def test_roundtrip(self):
+        df = pd.DataFrame(
+            {
+                'power': pd.Series([1.0,2.0,3.0], dtype='pint[W]'),
+                'torque': pd.Series([4.0,5.0,6.0], dtype='pint[N*m]'),
+                'fruits': pd.Series(['apple', 'pear', 'kiwi'])
+            }
+        )
+        df1 = df.pint.dequantify().pint.quantify(level=-1)
+        tm.assert_equal(df1.power.pint.m, df.power.pint.m)