diff --git a/index.php b/index.php
index 7ba11cf..f3002b1 100644
--- a/index.php
+++ b/index.php
@@ -701,6 +701,9 @@ if ($_SERVER['REQUEST_METHOD'] == "POST") {
             if (e.target.classList.contains("addSpecimen")) {
 
                 let row = document.querySelector(".specimenRow").cloneNode(true)
+                
+                row.querySelector('input[name="jumlah_specimen[]"]').value = ""
+
                 document.getElementById("specimenContainer").appendChild(row)
 
             }