diff --git a/tutorials/combustion/fireFoam/les/flameSpreadWaterSuppressionPanel/constant/pyrolysisRegion/chemistryProperties b/tutorials/combustion/fireFoam/les/flameSpreadWaterSuppressionPanel/constant/pyrolysisRegion/chemistryProperties
index 1366ff04bdf5e7bb89a39616cb80ef065906cdd6..7cb5c41c06f886c82d49d7178941fff0cd4bbc72 100644
--- a/tutorials/combustion/fireFoam/les/flameSpreadWaterSuppressionPanel/constant/pyrolysisRegion/chemistryProperties
+++ b/tutorials/combustion/fireFoam/les/flameSpreadWaterSuppressionPanel/constant/pyrolysisRegion/chemistryProperties
@@ -27,7 +27,7 @@ initialChemicalTimeStep 1e-07;
 
 odeCoeffs
 {
-    solver          SIBS;
+    solver          seulex;
     eps             0.05;
 }
 
diff --git a/tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/chemistryProperties b/tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/chemistryProperties
index 5535bbdb93697336b9cd4911e49b0751a24ee720..df407c07fffab58d5c7c853bb30bd63a9f294431 100644
--- a/tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/chemistryProperties
+++ b/tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/chemistryProperties
@@ -27,7 +27,7 @@ initialChemicalTimeStep 1e-07;
 
 odeCoeffs
 {
-    solver          SIBS;
+    solver          seulex;
     absTol          1e-12;
     relTol          0.01;
 }
diff --git a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/chemistryProperties b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/chemistryProperties
index 21cf68db59b0e1549f3e001b2b2358c0d568f79c..2d6208654bd6a384218d9f80dd7b7d243c4c5fb3 100644
--- a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/chemistryProperties
+++ b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/chemistryProperties
@@ -33,7 +33,7 @@ EulerImplicitCoeffs
 
 odeCoeffs
 {
-    solver          SIBS;
+    solver          seulex;
     eps             0.05;
 }
 
diff --git a/tutorials/lagrangian/reactingParcelFoam/filter/constant/chemistryProperties b/tutorials/lagrangian/reactingParcelFoam/filter/constant/chemistryProperties
index 16abe88752c48159501619254405bab19431985b..502724fef5d5e17f8be2a326e56404616cba2e60 100644
--- a/tutorials/lagrangian/reactingParcelFoam/filter/constant/chemistryProperties
+++ b/tutorials/lagrangian/reactingParcelFoam/filter/constant/chemistryProperties
@@ -33,7 +33,7 @@ EulerImplicitCoeffs
 
 odeCoeffs
 {
-    solver          RK;
+    solver          seulex;
     eps             0.05;
 }
 
diff --git a/tutorials/lagrangian/reactingParcelFoam/verticalChannel/constant/chemistryProperties b/tutorials/lagrangian/reactingParcelFoam/verticalChannel/constant/chemistryProperties
index 16abe88752c48159501619254405bab19431985b..502724fef5d5e17f8be2a326e56404616cba2e60 100644
--- a/tutorials/lagrangian/reactingParcelFoam/verticalChannel/constant/chemistryProperties
+++ b/tutorials/lagrangian/reactingParcelFoam/verticalChannel/constant/chemistryProperties
@@ -33,7 +33,7 @@ EulerImplicitCoeffs
 
 odeCoeffs
 {
-    solver          RK;
+    solver          seulex;
     eps             0.05;
 }
 
diff --git a/tutorials/lagrangian/sprayFoam/aachenBomb/constant/chemistryProperties b/tutorials/lagrangian/sprayFoam/aachenBomb/constant/chemistryProperties
index ea16d954f1b6ac9f838e400fb3c901e68d253a6e..999aba673f20db0fe99eed27982fc81c94e69d81 100644
--- a/tutorials/lagrangian/sprayFoam/aachenBomb/constant/chemistryProperties
+++ b/tutorials/lagrangian/sprayFoam/aachenBomb/constant/chemistryProperties
@@ -27,7 +27,7 @@ initialChemicalTimeStep 1e-07;
 
 odeCoeffs
 {
-    solver          SIBS;
+    solver          seulex;
     eps             0.05;
 }