diff --git a/app/models/transfer/state.rb b/app/models/transfer/state.rb
index bd35775706..082eb52dc1 100644
--- a/app/models/transfer/state.rb
+++ b/app/models/transfer/state.rb
@@ -67,7 +67,7 @@ def self.included(base) # rubocop:todo Metrics/MethodLength
                 states = Array(states).map(&:to_s)
 
                 # If all of the states are present there is no point in actually adding this set of conditions because
-                # we're basically looking for all of the plates.
+                # we're basically looking for all of the tubes.
                 if states.sort != ALL_STATES.sort
                   join_options = [
                     # rubocop:todo Layout/LineLength
diff --git a/app/resources/api/v2/shared_behaviour/labware.rb b/app/resources/api/v2/shared_behaviour/labware.rb
index 789e2614e1..943e29a134 100644
--- a/app/resources/api/v2/shared_behaviour/labware.rb
+++ b/app/resources/api/v2/shared_behaviour/labware.rb
@@ -62,6 +62,7 @@ module Labware
           filter :updated_at_gt,
                  apply: lambda { |records, value, _options| records.where('labware.updated_at > ?', value[0].to_date) }
           filter :include_used, apply: ->(records, value, _options) { records.include_labware_with_children(value) }
+          filter :state, apply: ->(records, value, _options) { records.in_state(value.flatten) }
         end
 
         # Custom methods