diff --git a/nistchempy/__init__.py b/nistchempy/__init__.py
index 135d911..7b54f80 100644
--- a/nistchempy/__init__.py
+++ b/nistchempy/__init__.py
@@ -12,6 +12,6 @@
 from nistchempy.compound_list import get_all_data
 from nistchempy.compound import get_compound
 from nistchempy.search import run_search, NistSearchParameters
-from nistchempy.search import print_search_parameters
+from nistchempy.search import get_search_parameters, print_search_parameters
 
 
diff --git a/nistchempy/compound_list.py b/nistchempy/compound_list.py
index 01ab668..4e5b88f 100644
--- a/nistchempy/compound_list.py
+++ b/nistchempy/compound_list.py
@@ -21,16 +21,12 @@ def get_all_data() -> _pd.core.frame.DataFrame:
         _pd.core.frame.DataFrame: dataframe containing pre-extracted compound info
     
     '''
-    dt0 = {'mol_weight': 'float64'}
-    dt1 = {k: 'string' for k in ('ID', 'name', 'formula', 'inchi', 'inchi_key', 'cas_rn')}
-    dt2 = {k: 'bool' for k in ('mol2D', 'mol3D', 'cIR', 'cTZ', 'cMS', 'cUV', 'cGC',
-                               'cTG', 'cTC', 'cTP', 'cSO', 'cTR', 'cIE', 'cIC', 'cES', 'cDI')}
-    dtypes = {**dt0, **dt1, **dt2}
     pkg = _importlib_resources.files('nistchempy')
     data_file = pkg / 'nist_data.zip'
     with _importlib_resources.as_file(data_file) as path:
         zf = _zipfile.ZipFile(path) 
-        df = _pd.read_csv(zf.open('nist_data.csv'), dtype = dtypes)
+        df = _pd.read_csv(zf.open('nist_data.csv'), dtype = 'str')
+        df['mol_weight'] = df['mol_weight'].astype(float)
         zf.close()
     
     return df
diff --git a/nistchempy/nist_data.zip b/nistchempy/nist_data.zip
index 29f6d32..3b2c56e 100644
Binary files a/nistchempy/nist_data.zip and b/nistchempy/nist_data.zip differ
diff --git a/tests/test_search.py b/tests/test_search.py
index 8c042ba..623fb34 100644
--- a/tests/test_search.py
+++ b/tests/test_search.py
@@ -6,40 +6,40 @@
 class TestSearch:
     
     def test_search_id(self):
-        s = nist.search('C71432', 'id')
+        s = nist.run_search('C71432', 'id')
         assert len(s.compounds) == 1
         assert s.compounds[0].name.lower() == 'benzene'
     
     def test_search_casrn(self):
-        s = nist.search('71-43-2', 'cas')
+        s = nist.run_search('71-43-2', 'cas')
         assert len(s.compounds) == 1
         assert s.compounds[0].name.lower() == 'benzene'
     
     def test_search_name(self):
-        s = nist.search('*butadiene*', 'name')
+        s = nist.run_search('*butadiene*', 'name')
         assert len(s.compound_ids) > 0
         X = nist.get_compound(s.compound_ids[0])
         names = [X.name] + X.synonyms
         assert any(['butadiene' in name.lower() for name in names])
     
     def test_search_formula(self):
-        s = nist.search('C6H?Cl3', 'formula')
+        s = nist.run_search('C6H?Cl3', 'formula')
         assert s.compound_ids
     
     def test_search_inchi(self):
-        s = nist.search('InChI=1S/C10H14O2/c1-6-3-4-8-7(2)5-12-10(11)9(6)8/h5-6,8-9H,3-4H2,1-2H3', 'inchi')
+        s = nist.run_search('InChI=1S/C10H14O2/c1-6-3-4-8-7(2)5-12-10(11)9(6)8/h5-6,8-9H,3-4H2,1-2H3', 'inchi')
         assert s.compound_ids
     
     def test_search_bad_inchi(self):
-        s = nist.search('qwe-qwe-qwe', 'inchi')
+        s = nist.run_search('qwe-qwe-qwe', 'inchi')
         assert not s.compound_ids
     
     def test_search_lost(self):
-        s = nist.search('C?H?O?', 'formula')
+        s = nist.run_search('C?H?O?', 'formula')
         assert s.lost
     
     def test_load_compounds(self):
-        s = nist.search('InChI=1S/C10H14O2/c1-6-3-4-8-7(2)5-12-10(11)9(6)8/h5-6,8-9H,3-4H2,1-2H3', 'inchi')
+        s = nist.run_search('InChI=1S/C10H14O2/c1-6-3-4-8-7(2)5-12-10(11)9(6)8/h5-6,8-9H,3-4H2,1-2H3', 'inchi')
         s.load_found_compounds()
         assert all([X.ID is not None for X in s.compounds])