diff --git a/lims_management/models/__pycache__/sale_order.cpython-312.pyc b/lims_management/models/__pycache__/sale_order.cpython-312.pyc
index cb430ed..61dbebf 100644
Binary files a/lims_management/models/__pycache__/sale_order.cpython-312.pyc and b/lims_management/models/__pycache__/sale_order.cpython-312.pyc differ
diff --git a/lims_management/models/__pycache__/stock_lot.cpython-312.pyc b/lims_management/models/__pycache__/stock_lot.cpython-312.pyc
index c5edc30..49bcfe0 100644
Binary files a/lims_management/models/__pycache__/stock_lot.cpython-312.pyc and b/lims_management/models/__pycache__/stock_lot.cpython-312.pyc differ
diff --git a/lims_management/models/stock_lot.py b/lims_management/models/stock_lot.py
index dfe9ef6..8c7b8d9 100644
--- a/lims_management/models/stock_lot.py
+++ b/lims_management/models/stock_lot.py
@@ -145,74 +145,81 @@ class StockLot(models.Model):
     )
 
     def action_collect(self):
-        """Mark sample as collected"""
-        old_state = self.state
-        self.write({'state': 'collected', 'collection_date': fields.Datetime.now()})
-        self.message_post(
-            body='Muestra recolectada por %s' % self.env.user.name,
-            subject='Estado actualizado: Recolectada',
-            message_type='notification'
-        )
+        """Mark sample(s) as collected"""
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'collected', 'collection_date': fields.Datetime.now()})
+            record.message_post(
+                body='Muestra recolectada por %s' % self.env.user.name,
+                subject='Estado actualizado: Recolectada',
+                message_type='notification'
+            )
 
     def action_receive(self):
-        """Mark sample as received in laboratory"""
-        old_state = self.state
-        self.write({'state': 'received'})
-        self.message_post(
-            body='Muestra recibida en laboratorio por %s' % self.env.user.name,
-            subject='Estado actualizado: Recibida',
-            message_type='notification'
-        )
+        """Mark sample(s) as received in laboratory"""
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'received'})
+            record.message_post(
+                body='Muestra recibida en laboratorio por %s' % self.env.user.name,
+                subject='Estado actualizado: Recibida',
+                message_type='notification'
+            )
 
     def action_start_analysis(self):
         """Start analysis process"""
-        old_state = self.state
-        self.write({'state': 'in_process'})
-        self.message_post(
-            body='Análisis iniciado por %s' % self.env.user.name,
-            subject='Estado actualizado: En Proceso',
-            message_type='notification'
-        )
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'in_process'})
+            record.message_post(
+                body='Análisis iniciado por %s' % self.env.user.name,
+                subject='Estado actualizado: En Proceso',
+                message_type='notification'
+            )
 
     def action_complete_analysis(self):
         """Mark analysis as completed"""
-        old_state = self.state
-        self.write({'state': 'analyzed'})
-        self.message_post(
-            body='Análisis completado por %s' % self.env.user.name,
-            subject='Estado actualizado: Analizada',
-            message_type='notification'
-        )
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'analyzed'})
+            record.message_post(
+                body='Análisis completado por %s' % self.env.user.name,
+                subject='Estado actualizado: Analizada',
+                message_type='notification'
+            )
 
     def action_store(self):
-        """Store the sample"""
-        old_state = self.state
-        self.write({'state': 'stored'})
-        self.message_post(
-            body='Muestra almacenada por %s' % self.env.user.name,
-            subject='Estado actualizado: Almacenada',
-            message_type='notification'
-        )
+        """Store the sample(s)"""
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'stored'})
+            record.message_post(
+                body='Muestra almacenada por %s' % self.env.user.name,
+                subject='Estado actualizado: Almacenada',
+                message_type='notification'
+            )
 
     def action_dispose(self):
-        """Dispose of the sample"""
-        old_state = self.state
-        self.write({'state': 'disposed'})
-        self.message_post(
-            body='Muestra desechada por %s. Motivo de disposición registrado.' % self.env.user.name,
-            subject='Estado actualizado: Desechada',
-            message_type='notification'
-        )
+        """Dispose of the sample(s)"""
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'disposed'})
+            record.message_post(
+                body='Muestra desechada por %s. Motivo de disposición registrado.' % self.env.user.name,
+                subject='Estado actualizado: Desechada',
+                message_type='notification'
+            )
     
     def action_cancel(self):
-        """Cancel the sample"""
-        old_state = self.state
-        self.write({'state': 'cancelled'})
-        self.message_post(
-            body='Muestra cancelada por %s' % self.env.user.name,
-            subject='Estado actualizado: Cancelada',
-            message_type='notification'
-        )
+        """Cancel the sample(s)"""
+        for record in self:
+            old_state = record.state
+            record.write({'state': 'cancelled'})
+            record.message_post(
+                body='Muestra cancelada por %s' % self.env.user.name,
+                subject='Estado actualizado: Cancelada',
+                message_type='notification'
+            )
     
     def action_open_rejection_wizard(self):
         """Open the rejection wizard"""