diff --git a/app/models/box_form.rb b/app/models/box_form.rb
index 43f160502..be295e984 100644
--- a/app/models/box_form.rb
+++ b/app/models/box_form.rb
@@ -217,7 +217,7 @@ def parse_csv(path)
           instruction: row["Instructions"],
           concentrations: {
             "0" => {
-              replicate: row["Replicates"],
+              replicate: row["Replicates"].to_i,
               concentration: Integer(Float(row["Concentration"]&.strip)),
             },
           },