diff --git a/Cantera/clib/src/clib_defs.h b/Cantera/clib/src/clib_defs.h
index f3fa601f7..7e89e7dc2 100755
--- a/Cantera/clib/src/clib_defs.h
+++ b/Cantera/clib/src/clib_defs.h
@@ -48,8 +48,6 @@
 #endif
 
 namespace Cantera {}
-//using namespace Cantera;
 namespace std {}
-//using namespace std;
 
 #endif
diff --git a/Cantera/cxx/include/Cantera.h b/Cantera/cxx/include/Cantera.h
index 0093fe998..08dad4bb9 100755
--- a/Cantera/cxx/include/Cantera.h
+++ b/Cantera/cxx/include/Cantera.h
@@ -21,8 +21,6 @@
 
 namespace Cantera_CXX{ }
 
-using namespace Cantera_CXX;
-
 #include "kernel/ct_defs.h"
 
 // some useful functions
diff --git a/Cantera/cxx/include/Edge.h b/Cantera/cxx/include/Edge.h
index 0ae5f8ba6..40eaa25e7 100644
--- a/Cantera/cxx/include/Edge.h
+++ b/Cantera/cxx/include/Edge.h
@@ -7,7 +7,6 @@
 #include "kernel/EdgeKinetics.h"
 #include "kernel/importKinetics.h"
 
-using namespace Cantera;
 namespace Cantera_CXX {
 
     class Edge : 
diff --git a/Cantera/cxx/include/GRI30.h b/Cantera/cxx/include/GRI30.h
index 6bc28cb26..d11afede0 100644
--- a/Cantera/cxx/include/GRI30.h
+++ b/Cantera/cxx/include/GRI30.h
@@ -11,6 +11,7 @@
 #include "kernel/importKinetics.h"
 #include "kernel/stringUtils.h"
 
+
 namespace Cantera_CXX {
 
     /**
diff --git a/Cantera/cxx/include/zerodim.h b/Cantera/cxx/include/zerodim.h
index 168039815..fb32b807d 100644
--- a/Cantera/cxx/include/zerodim.h
+++ b/Cantera/cxx/include/zerodim.h
@@ -11,7 +11,6 @@
 #include "kernel/FlowReactor.h"
 #include "kernel/ConstPressureReactor.h"
 
-using namespace CanteraZeroD;
 
 #endif
 
diff --git a/Cantera/fortran/src/fct.cpp b/Cantera/fortran/src/fct.cpp
index cbfb0c84d..29f7a812a 100644
--- a/Cantera/fortran/src/fct.cpp
+++ b/Cantera/fortran/src/fct.cpp
@@ -30,6 +30,9 @@
 
 #include "flib_defs.h"
 
+using namespace Cantera;
+using namespace std;
+
 // Assert that there is storage 
 // for the templated classes' static member
 // (needed to compile on solaris)
@@ -39,7 +42,7 @@ inline XML_Node* _xml(const integer* n) {
     return Cabinet<XML_Node>::cabinet()->item(*n);
 }
 
-inline ThermoPhase* _fph(const integer* n) {
+inline Cantera::ThermoPhase* _fph(const integer* n) {
     return th(*n);
 }
 
diff --git a/Cantera/fortran/src/fctxml.cpp b/Cantera/fortran/src/fctxml.cpp
index 93efbc8a3..246c187da 100644
--- a/Cantera/fortran/src/fctxml.cpp
+++ b/Cantera/fortran/src/fctxml.cpp
@@ -19,6 +19,7 @@
 
 using namespace ctml;
 using namespace std;
+using namespace Cantera;
 
 #include "../../clib/src/Cabinet.h"
 
diff --git a/Cantera/fortran/src/flib_defs.h b/Cantera/fortran/src/flib_defs.h
index 3da47e4a9..e879a2479 100644
--- a/Cantera/fortran/src/flib_defs.h
+++ b/Cantera/fortran/src/flib_defs.h
@@ -21,8 +21,6 @@
 typedef integer status_t;
 
 namespace Cantera {}
-using namespace Cantera;
 namespace std{}
-using namespace std;
 
 #endif
diff --git a/Cantera/matlab/cantera/private/ctmatutils.h b/Cantera/matlab/cantera/private/ctmatutils.h
index ffabe9d40..17e4f3369 100755
--- a/Cantera/matlab/cantera/private/ctmatutils.h
+++ b/Cantera/matlab/cantera/private/ctmatutils.h
@@ -2,7 +2,6 @@ const double Undef = -999.123;
 //const double DERR = -999.999;
 
 #include <string>
-using namespace std;
 
 void reportError();
 
@@ -24,13 +23,13 @@ inline char* getString(const mxArray* p) {
     int m = mxGetM(p);
     int n = mxGetN(p);
     int buflen = m*n + 1;
-    string msg;
+    std::string msg;
 
     if (m == 1) {
         input_buf = (char*)mxCalloc(buflen, sizeof(char));
         status = mxGetString(p, input_buf, buflen);
         if(status != 0) {
-            msg = string(input_buf) 
+            msg = std::string(input_buf) 
                   + "\nNot enough space. String is truncated.";
             mexWarnMsgTxt(msg.c_str());
         }
diff --git a/Cantera/matlab/cantera/private/mllogger.h b/Cantera/matlab/cantera/private/mllogger.h
index 30d0e2dd3..94844c42a 100644
--- a/Cantera/matlab/cantera/private/mllogger.h
+++ b/Cantera/matlab/cantera/private/mllogger.h
@@ -13,7 +13,6 @@
 #include "cantera/kernel/logger.h"
 
 #include <iostream>
-//using namespace std;
 
 static std::string ss = "disp(' ";
 
diff --git a/Cantera/python/src/pylogger.h b/Cantera/python/src/pylogger.h
index 9a84139cb..a60ac2447 100644
--- a/Cantera/python/src/pylogger.h
+++ b/Cantera/python/src/pylogger.h
@@ -5,7 +5,6 @@
 #include <string>
 #include "cantera/kernel/logger.h"
 
-using namespace std;
 
 static std::string ss = "print \"\"\" ";
 
@@ -18,7 +17,7 @@ namespace Cantera {
         Py_Logger() {}
         virtual ~Py_Logger() {}
 
-        virtual void write(const string& s) {
+        virtual void write(const std::string& s) {
             char ch = s[0];
             int n = 0;
             while (ch != '\0') {
@@ -35,7 +34,7 @@ namespace Cantera {
         }
 
         virtual void error(const std::string& msg) {
-            string err = "raise \""+msg+"\"";
+            std::string err = "raise \""+msg+"\"";
             PyRun_SimpleString((char *)err.c_str());
         }
 
diff --git a/Cantera/src/equil/vcs_internal.h b/Cantera/src/equil/vcs_internal.h
index b816240e2..b3d87bbf7 100644
--- a/Cantera/src/equil/vcs_internal.h
+++ b/Cantera/src/equil/vcs_internal.h
@@ -249,8 +249,6 @@ namespace VCSnonideal {
     
      #include "Cantera.h"
      #include "kernel/vcs_internal.h"
-     using namespace Cantera;
-     using namespace VCSnonideal;
 
      const double g_cgs = 980.;
      const double mass_cyl = 0.066;
diff --git a/Cantera/src/kinetics/Group.h b/Cantera/src/kinetics/Group.h
index 82e13b74f..cf44e475c 100644
--- a/Cantera/src/kinetics/Group.h
+++ b/Cantera/src/kinetics/Group.h
@@ -14,7 +14,6 @@
 
 #include "ct_defs.h"
 
-//using namespace std;
 namespace Cantera {
 
     /**
diff --git a/Cantera/src/numerics/Func1.h b/Cantera/src/numerics/Func1.h
index fa3e6b23f..e91263101 100644
--- a/Cantera/src/numerics/Func1.h
+++ b/Cantera/src/numerics/Func1.h
@@ -23,7 +23,6 @@
 
 #include <iostream>
 #include <string>
-using namespace std;
 
 namespace Cantera {
 
diff --git a/Cantera/src/oneD/boundaries1D.cpp b/Cantera/src/oneD/boundaries1D.cpp
index cfe591a33..b87ab2e79 100644
--- a/Cantera/src/oneD/boundaries1D.cpp
+++ b/Cantera/src/oneD/boundaries1D.cpp
@@ -262,8 +262,8 @@ namespace Cantera {
     restore(const XML_Node& dom, doublereal* soln) {
         //map<string, double> x;
         //getFloats(dom, x);
-        soln[0] = getFloat(dom, "mdot", "massflowrate"); // x["mdot"];
-        soln[1] = getFloat(dom, "temperature", "temperature"); // x["temperature"];
+        soln[0] = ctml::getFloat(dom, "mdot", "massflowrate"); // x["mdot"];
+        soln[1] = ctml::getFloat(dom, "temperature", "temperature"); // x["temperature"];
         resize(2,1);
     }
 
@@ -726,7 +726,7 @@ namespace Cantera {
     void Surf1D::
     restore(const XML_Node& dom, doublereal* soln) {
         map<string, double> x;
-        getFloats(dom, x);
+        ctml::getFloats(dom, x);
         soln[0] = x["temperature"];
         resize(1,1);
     }
@@ -886,7 +886,7 @@ namespace Cantera {
     void ReactingSurf1D::
     restore(const XML_Node& dom, doublereal* soln) {
         map<string, double> x;
-        getFloats(dom, x);
+        ctml::getFloats(dom, x);
         soln[0] = x["temperature"];
         resize(1,1);
     }
diff --git a/Cantera/src/transport/LTPspecies.cpp b/Cantera/src/transport/LTPspecies.cpp
index 74ce83edb..7fa8b4cb7 100644
--- a/Cantera/src/transport/LTPspecies.cpp
+++ b/Cantera/src/transport/LTPspecies.cpp
@@ -13,6 +13,7 @@
  */
 #include "LTPspecies.h"
 using namespace std;
+using namespace ctml;
 
 namespace Cantera {
   //====================================================================================================================
diff --git a/Cantera/src/transport/LiquidTranInteraction.cpp b/Cantera/src/transport/LiquidTranInteraction.cpp
index f6c0ae203..7d52b2127 100644
--- a/Cantera/src/transport/LiquidTranInteraction.cpp
+++ b/Cantera/src/transport/LiquidTranInteraction.cpp
@@ -15,7 +15,7 @@
 #include "MargulesVPSSTP.h"
 #include <stdlib.h>
 using namespace std;
-
+using namespace ctml;
 
 namespace Cantera {
 
diff --git a/Cantera/src/transport/SimpleTransport.cpp b/Cantera/src/transport/SimpleTransport.cpp
index 405baedee..6c9b62c64 100644
--- a/Cantera/src/transport/SimpleTransport.cpp
+++ b/Cantera/src/transport/SimpleTransport.cpp
@@ -210,8 +210,8 @@ namespace Cantera {
 	 * <compositionDependence model="Mixture_Averaged"/>
 	 */
 	std::string modelName = "";
-	if (getOptionalModel(transportNode, "compositionDependence",
-			      modelName)) {
+	if (ctml::getOptionalModel(transportNode, "compositionDependence",
+	                           modelName)) {
 	  modelName = lowercase(modelName);
           if (modelName == "solvent_only") {
 	    compositionDepType_ = 0;
diff --git a/Cantera/src/transport/TransportFactory.cpp b/Cantera/src/transport/TransportFactory.cpp
index 8162bdec5..0b82466a8 100644
--- a/Cantera/src/transport/TransportFactory.cpp
+++ b/Cantera/src/transport/TransportFactory.cpp
@@ -867,15 +867,15 @@ namespace Cantera {
       // child are skipped, instead of throwing an exception.
       try {
 	XML_Node& tr = sp.child("transport");
-	getString(tr, "geometry", val, type);
+	ctml::getString(tr, "geometry", val, type);
 	geom = gindx[val] - 100;
 	map<std::string, doublereal> fv;
 
-	welldepth = getFloat(tr, "LJ_welldepth");
-	diam = getFloat(tr, "LJ_diameter");
-	dipole = getFloat(tr, "dipoleMoment");
-	polar = getFloat(tr, "polarizability");
-	rot = getFloat(tr, "rotRelax");
+	welldepth = ctml::getFloat(tr, "LJ_welldepth");
+	diam = ctml::getFloat(tr, "LJ_diameter");
+	dipole = ctml::getFloat(tr, "dipoleMoment");
+	polar = ctml::getFloat(tr, "polarizability");
+	rot = ctml::getFloat(tr, "rotRelax");
 
 	GasTransportData data;
 	data.speciesName = name;
diff --git a/apps/bvp/BoundaryValueProblem.h b/apps/bvp/BoundaryValueProblem.h
index 106aabc4b..dc000fb91 100644
--- a/apps/bvp/BoundaryValueProblem.h
+++ b/apps/bvp/BoundaryValueProblem.h
@@ -7,8 +7,6 @@
 
 #include <cantera/Cantera.h>
 #include <cantera/onedim.h>
-using namespace Cantera;
-using namespace std;
 
 /// Namespace for the boundary value problem package.
 namespace BVP {
diff --git a/examples/cxx/example_utils.h b/examples/cxx/example_utils.h
index 9211aa94d..f9b529c43 100755
--- a/examples/cxx/example_utils.h
+++ b/examples/cxx/example_utils.h
@@ -4,7 +4,6 @@
 #include <cantera/kernel/Array.h>
 #include <cantera/kernel/plots.h>
 
-using namespace Cantera;
 namespace CanteraZeroD{}
 
 // Save the temperature, density, pressure, and mole fractions at one
diff --git a/ext/f2c_math/gmres.h b/ext/f2c_math/gmres.h
index 1f6a044d5..8bde197c2 100644
--- a/ext/f2c_math/gmres.h
+++ b/ext/f2c_math/gmres.h
@@ -33,7 +33,6 @@ gmres( int m, int N, const Matrix &A, const doublereal *b, doublereal *x, double
 
 #include "cblas.h"
 #include "../../Cantera/src/ctlapack.h"
-using namespace Cantera;
 
 template< class Matrix >
 inline int
diff --git a/ext/math/gmres.h b/ext/math/gmres.h
index 1f6a044d5..8bde197c2 100755
--- a/ext/math/gmres.h
+++ b/ext/math/gmres.h
@@ -33,7 +33,6 @@ gmres( int m, int N, const Matrix &A, const doublereal *b, doublereal *x, double
 
 #include "cblas.h"
 #include "../../Cantera/src/ctlapack.h"
-using namespace Cantera;
 
 template< class Matrix >
 inline int