diff --git a/Content.Shared/Chemistry/ReagentUnit.cs b/Content.Shared/Chemistry/ReagentUnit.cs
index 63385fe297..43c2354f03 100644
--- a/Content.Shared/Chemistry/ReagentUnit.cs
+++ b/Content.Shared/Chemistry/ReagentUnit.cs
@@ -32,7 +32,7 @@ namespace Content.Shared.Chemistry
 
         public static ReagentUnit New(decimal value)
         {
-            return new ReagentUnit((int) Math.Round(value * (decimal) Math.Pow(10, Shift)));
+            return new ReagentUnit((int) Math.Round(value * (decimal) Math.Pow(10, Shift), MidpointRounding.AwayFromZero));
         }
 
         public static ReagentUnit New(float value)
@@ -42,12 +42,12 @@ namespace Content.Shared.Chemistry
 
         private static int FromFloat(float value)
         {
-            return (int) Math.Round(value * (float) Math.Pow(10, Shift));
+            return (int) Math.Round(value * (float) Math.Pow(10, Shift), MidpointRounding.AwayFromZero);
         }
 
         public static ReagentUnit New(double value)
         {
-            return new ReagentUnit((int) Math.Round(value * Math.Pow(10, Shift)));
+            return new ReagentUnit((int) Math.Round(value * Math.Pow(10, Shift), MidpointRounding.AwayFromZero));
         }
 
         public static ReagentUnit New(string value)
diff --git a/Content.Tests/Shared/Chemistry/ReagentUnit_Tests.cs b/Content.Tests/Shared/Chemistry/ReagentUnit_Tests.cs
index 46d391459b..003ecf4663 100644
--- a/Content.Tests/Shared/Chemistry/ReagentUnit_Tests.cs
+++ b/Content.Tests/Shared/Chemistry/ReagentUnit_Tests.cs
@@ -46,7 +46,7 @@ namespace Content.Tests.Shared.Chemistry
         }
 
         [Test]
-        [TestCase("1.005", "1")]
+        [TestCase("1.005", "1.01")]
         [TestCase("0.999", "1")]
         public void ReagentUnitStringTests(string value, string expected)
         {
@@ -57,6 +57,7 @@ namespace Content.Tests.Shared.Chemistry
         [Test]
         [TestCase(1.001f, 1.001f, "2")]
         [TestCase(1.001f, 1.004f, "2")]
+        [TestCase(1f, 1.005f, "2.01")]
         [TestCase(1f, 2.005f, "3.01")]
         public void CalculusPlus(float aFloat, float bFloat, string expected)
         {
@@ -111,11 +112,11 @@ namespace Content.Tests.Shared.Chemistry
 
         [Test]
         [TestCase(0.995f, 100)]
-        [TestCase(1.005f, 100)]
+        [TestCase(1.005f, 101)]
         [TestCase(2.005f, 201)]
         public void FloatRoundingTest(float a, int expected)
         {
-            var result = (int) Math.Round(a * (float) Math.Pow(10, 2));
+            var result = (int) Math.Round(a * (float) Math.Pow(10, 2), MidpointRounding.AwayFromZero);
             Assert.AreEqual(expected, result);
         }