diff --git a/content/session/urinehormoneextractionaction.md b/content/session/urinehormoneextractionaction.md
index 653a52d..4b0c952 100644
--- a/content/session/urinehormoneextractionaction.md
+++ b/content/session/urinehormoneextractionaction.md
@@ -29,7 +29,7 @@ The results of this short experiment will be a brown sticky substance that is a
 - Pot for boiling
 
 ## DIY Column Construction:
-Two metal rods are fixed to bracket by zip ties. 
+Two metal rods are fixed to a bracket by zip ties. 
 One pipe clamp per metal rod is then fixed by zip ties. 
 Make an incision around a glass bottle using the glass bottle cutter.
 Pour hot water around the incision, then cold water. This should cause the two pieces to separate. The cut glass bottle will be the column.