diff --git a/cards.md b/cards.md
index 19f75f21774df5107ab3afe2e31708cf2a930898..908d422304dbe0aa1d916e70e8198ccc69cd86ee 100644
--- a/cards.md
+++ b/cards.md
@@ -104,11 +104,13 @@ order: -1
 			<li><a href="{{ 'external/lab/dishwasher-utilization-and-maintenance' | relative_url }}">Dishwasher utilization and maintenance</a></li>
 			<li><a href="{{ 'external/lab/handwashing' | relative_url }}">Handwashing</a></li>
 			<li><a href="{{ 'external/lab/lab-coats' | relative_url }}">Lab coats</a></li>
+			<li><a href="{{ 'external/lab/maintenance-of-fridges' | relative_url }}">Maintenance of fridges and freezers</a></li>
 			<li><a href="{{ 'external/lab/maintenance_of_cold_traps' | relative_url }}">Maintenance of cold traps  </a></li>
 			<li><a href="{{ 'external/lab/personal-alert-safety-system' | relative_url }}">Personal alert safety system (PASS)</a></li>
 			<li><a href="{{ 'external/lab/quarks-general' | relative_url }}">Quarks - General information</a></li>
 			<li><a href="{{ 'external/lab/utilization-of-autoclaves' | relative_url }}">Utilization of autoclaves</a></li>
 			<li><a href="{{ 'external/lab/utilization-of-balances' | relative_url }}">Utilization of balances</a></li>
+			<li><a href="{{ 'external/lab/utilization-of-bsc' | relative_url }}">Utilization of BSC</a></li>
 			<li><a href="{{ 'external/lab/utilization-of-pH-meter' | relative_url }}">Utilization of pH meter</a></li>
 
 		</ul>
diff --git a/external/lab/maintenance-of-fridges/img/img16.PNG b/external/lab/maintenance-of-fridges/img/img16.PNG
index eff25347cfb48d492b923fc5d1626674467c9fc6..7c11ac4c81810db6d255a1240204677b85ef38f4 100644
Binary files a/external/lab/maintenance-of-fridges/img/img16.PNG and b/external/lab/maintenance-of-fridges/img/img16.PNG differ