diff --git a/test_problems/cathermo/DH_graph_1/DH_graph_1.cpp b/test_problems/cathermo/DH_graph_1/DH_graph_1.cpp
index 79b398f6e..a42e1ed47 100644
--- a/test_problems/cathermo/DH_graph_1/DH_graph_1.cpp
+++ b/test_problems/cathermo/DH_graph_1/DH_graph_1.cpp
@@ -2,7 +2,7 @@
  *  @file DH_graph_1
  */
 
-#include "cantera/base/logger.h"
+#include "fileLog.h"
 #include "cantera/thermo/DebyeHuckel.h"
 
 #include <cstdio>
@@ -12,28 +12,6 @@ using namespace Cantera;
 
 typedef double doublereal;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs << endl;
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: DH_test " <<  endl;
diff --git a/test_problems/cathermo/DH_graph_NM/DH_graph_1.cpp b/test_problems/cathermo/DH_graph_NM/DH_graph_1.cpp
index 6caac3b1b..652bcdb36 100644
--- a/test_problems/cathermo/DH_graph_NM/DH_graph_1.cpp
+++ b/test_problems/cathermo/DH_graph_NM/DH_graph_1.cpp
@@ -2,7 +2,7 @@
  *  @file DH_graph_1
  */
 
-#include "cantera/base/logger.h"
+#include "fileLog.h"
 #include "cantera/thermo/DebyeHuckel.h"
 
 #include <cstdio>
@@ -10,28 +10,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs << endl;
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: DH_test " <<  endl;
diff --git a/test_problems/cathermo/DH_graph_Pitzer/DH_graph_1.cpp b/test_problems/cathermo/DH_graph_Pitzer/DH_graph_1.cpp
index 6caac3b1b..652bcdb36 100644
--- a/test_problems/cathermo/DH_graph_Pitzer/DH_graph_1.cpp
+++ b/test_problems/cathermo/DH_graph_Pitzer/DH_graph_1.cpp
@@ -2,7 +2,7 @@
  *  @file DH_graph_1
  */
 
-#include "cantera/base/logger.h"
+#include "fileLog.h"
 #include "cantera/thermo/DebyeHuckel.h"
 
 #include <cstdio>
@@ -10,28 +10,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs << endl;
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: DH_test " <<  endl;
diff --git a/test_problems/cathermo/DH_graph_acommon/DH_graph_1.cpp b/test_problems/cathermo/DH_graph_acommon/DH_graph_1.cpp
index 6caac3b1b..652bcdb36 100644
--- a/test_problems/cathermo/DH_graph_acommon/DH_graph_1.cpp
+++ b/test_problems/cathermo/DH_graph_acommon/DH_graph_1.cpp
@@ -2,7 +2,7 @@
  *  @file DH_graph_1
  */
 
-#include "cantera/base/logger.h"
+#include "fileLog.h"
 #include "cantera/thermo/DebyeHuckel.h"
 
 #include <cstdio>
@@ -10,28 +10,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs << endl;
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: DH_test " <<  endl;
diff --git a/test_problems/cathermo/DH_graph_bdotak/DH_graph_1.cpp b/test_problems/cathermo/DH_graph_bdotak/DH_graph_1.cpp
index 6caac3b1b..652bcdb36 100644
--- a/test_problems/cathermo/DH_graph_bdotak/DH_graph_1.cpp
+++ b/test_problems/cathermo/DH_graph_bdotak/DH_graph_1.cpp
@@ -2,7 +2,7 @@
  *  @file DH_graph_1
  */
 
-#include "cantera/base/logger.h"
+#include "fileLog.h"
 #include "cantera/thermo/DebyeHuckel.h"
 
 #include <cstdio>
@@ -10,28 +10,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs << endl;
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: DH_test " <<  endl;
diff --git a/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp b/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
index 6853f6dd9..a7614b03c 100644
--- a/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
+++ b/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
@@ -3,7 +3,6 @@
  *  @file HMW_graph_1.cpp
  */
 
-#include "cantera/base/logger.h"
 #include "cantera/thermo.h"
 #include "TemperatureTable.h"
 #include "cantera/thermo/HMWSoln.h"
@@ -13,28 +12,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -42,7 +19,6 @@ void printUsage()
 }
 
 
-
 int main(int argc, char** argv)
 {
 
@@ -58,12 +34,8 @@ int main(int argc, char** argv)
         }
         double Cp0_R[20], pmCp[20];
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
-
         /*
          * Load in and initialize the
          */
diff --git a/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp b/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
index 5aa5d13a2..fd570442a 100644
--- a/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
+++ b/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
@@ -2,9 +2,9 @@
  *  @file HMW_graph_1.cpp
  */
 
-#include "cantera/base/logger.h"
-#include "cantera/thermo.h"
 #include "TemperatureTable.h"
+
+#include "cantera/thermo.h"
 #include "cantera/thermo/HMWSoln.h"
 
 #include <cstdio>
@@ -12,28 +12,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -78,9 +56,6 @@ int main(int argc, char** argv)
         }
         double Cp0_R[20], pmCp[20];
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
 
diff --git a/test_problems/cathermo/HMW_graph_GvI/HMW_graph_GvI.cpp b/test_problems/cathermo/HMW_graph_GvI/HMW_graph_GvI.cpp
index 05a8cbe7d..031a07679 100644
--- a/test_problems/cathermo/HMW_graph_GvI/HMW_graph_GvI.cpp
+++ b/test_problems/cathermo/HMW_graph_GvI/HMW_graph_GvI.cpp
@@ -10,23 +10,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-    virtual void write(const string& msg) {
-        m_fs << msg;
-    }
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-    string m_fName;
-    fstream m_fs;
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -85,9 +68,6 @@ int main(int argc, char** argv)
         aTemp[5] = 273.15 + 275.;
         aTemp[6] = 273.15 + 300.;
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
         int nsp = HMW->nSpecies();
diff --git a/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp b/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
index 0bd8c71b2..66cad0228 100644
--- a/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
+++ b/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
@@ -4,7 +4,6 @@
  */
 
 #include "cantera/thermo/ThermoPhase.h"
-#include "cantera/base/logger.h"
 #include "cantera/thermo.h"
 #include "cantera/thermo/HMWSoln.h"
 
@@ -15,28 +14,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -87,9 +64,6 @@ int main(int argc, char** argv)
             strcpy(iFile, argv[1]);
         }
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
 
diff --git a/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp b/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
index 48a7c5c91..b05c96d6e 100644
--- a/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
+++ b/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
@@ -4,7 +4,6 @@
 
 #include "cantera/thermo.h"
 #include "cantera/thermo/HMWSoln.h"
-#include "cantera/base/logger.h"
 
 #include "TemperatureTable.h"
 
@@ -13,28 +12,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -86,9 +63,6 @@ int main(int argc, char** argv)
         }
         double Enth0_RT[20], pmEnth[20], molarEnth;
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
 
diff --git a/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp b/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
index 3cd24cc8f..d78ba28a0 100644
--- a/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
+++ b/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
@@ -2,7 +2,6 @@
  *  @file HMW_graph_VvT
  */
 
-#include "cantera/base/logger.h"
 #include "cantera/thermo.h"
 #include "TemperatureTable.h"
 #include "cantera/thermo/HMWSoln.h"
@@ -12,28 +11,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: HMW_test " <<  endl;
@@ -77,9 +54,6 @@ int main(int argc, char** argv)
         }
         double V0[20], pmV[20];
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
-
         HMWSoln* HMW = new HMWSoln(iFile, "NaCl_electrolyte");
 
 
diff --git a/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp b/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
index 488894bf4..07e8c0de5 100644
--- a/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
+++ b/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
@@ -5,7 +5,6 @@
 
 #include "cantera/thermo.h"
 #include "cantera/thermo/StoichSubstanceSSTP.h"
-#include "cantera/base/logger.h"
 
 #include "TemperatureTable.h"
 
@@ -14,28 +13,6 @@
 using namespace std;
 using namespace Cantera;
 
-class fileLog: public Logger
-{
-public:
-    fileLog(string fName) {
-        m_fName = fName;
-        m_fs.open(fName.c_str());
-    }
-
-    virtual void write(const string& msg) {
-        m_fs << msg;
-        m_fs.flush();
-    }
-
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
-    string m_fName;
-    ofstream m_fs;
-
-};
-
 void printUsage()
 {
     cout << "usage: stoichSubSSTP " <<  endl;
@@ -58,8 +35,6 @@ int main(int argc, char** argv)
             strcpy(iFile, argv[1]);
         }
 
-        //fileLog *fl = new fileLog("HMW_graph_1.log");
-        //setLogger(fl);
         sprintf(file_ID,"%s#NaCl(S)", iFile);
         XML_Node* xm = get_XML_NameID("phase", file_ID, 0);
         StoichSubstanceSSTP* solid = new StoichSubstanceSSTP(*xm);
diff --git a/test_problems/shared/fileLog.h b/test_problems/shared/fileLog.h
new file mode 100644
index 000000000..2b9ccc740
--- /dev/null
+++ b/test_problems/shared/fileLog.h
@@ -0,0 +1,24 @@
+#include "cantera/base/logger.h"
+
+#include <string>
+#include <fstream>
+
+class fileLog: public Cantera::Logger
+{
+public:
+    fileLog(std::string fName) {
+        m_fName = fName;
+        m_fs.open(fName.c_str());
+    }
+
+    virtual void write(const std::string& msg) {
+        m_fs << msg << std::endl;
+    }
+
+    virtual ~fileLog() {
+        m_fs.close();
+    }
+
+    std::string m_fName;
+    std::fstream m_fs;
+};