diff --git a/pylabrobot/liquid_handling/backends/hamilton/STAR_tests.py b/pylabrobot/liquid_handling/backends/hamilton/STAR_tests.py
index dda8ffe98a..20e5196357 100644
--- a/pylabrobot/liquid_handling/backends/hamilton/STAR_tests.py
+++ b/pylabrobot/liquid_handling/backends/hamilton/STAR_tests.py
@@ -6,7 +6,8 @@
 from pylabrobot.liquid_handling.standard import Pickup, GripDirection
 from pylabrobot.liquid_handling.liquid_classes.hamilton.star import (
   StandardVolumeFilter_Water_DispenseSurface,
-  StandardVolumeFilter_Water_DispenseJet_Empty)
+  StandardVolumeFilter_Water_DispenseJet_Empty,
+  HighVolumeFilter_96COREHead1000ul_Water_DispenseSurface_Empty)
 from pylabrobot.liquid_handling.parameter_sets.star import STARParameterSet
 from pylabrobot.plate_reading import PlateReader
 from pylabrobot.plate_reading.plate_reader_tests import MockPlateReaderBackend
@@ -491,7 +492,6 @@ async def test_dispense_single_resource(self):
     hlc = StandardVolumeFilter_Water_DispenseJet_Empty
     ps = STARParameterSet.from_hamilton_liquid_class(hlc, num_channels=5,
                                                      jet=[True]*5, blow_out=[True]*5)
-    print(ps.make_disp_kwargs())
     corrected_vol = hlc.compute_corrected_volume(10)
     with no_volume_tracking():
       await self.lh.dispense([self.bb]*5, vols=[corrected_vol]*5, liquid_height=[1]*5,
@@ -513,10 +513,12 @@ async def test_single_channel_dispense(self):
     self.lh.update_head_state({0: self.tip_rack.get_tip("A1")})
     assert self.plate.lid is not None
     self.plate.lid.unassign()
+    hlc = StandardVolumeFilter_Water_DispenseJet_Empty
+    ps = STARParameterSet.from_hamilton_liquid_class(hlc, num_channels=1,
+                                                      jet=[True]*1, blow_out=[True]*1)
+    corrected_vol = hlc.compute_corrected_volume(100)
     with no_volume_tracking():
-      corrected_vol = self.hlc.compute_corrected_volume(100)
-      await self.lh.dispense(self.plate["A1"], vols=[corrected_vol],
-                             jet=[True], blow_out=[True])
+      await self.lh.dispense(self.plate["A1"], vols=[corrected_vol], **ps.make_disp_kwargs())
     self._assert_command_sent_once(
       "C0DSid0002dm1 1&tm1 0&xp02983 00000&yp1457 0000&zx1866 1866&lp2000 2000&zl1866 1866&"
       "po0100 0100&ip0000 0000&it0 0&fp0000 0000&zu0032 0032&zr06180 06180&th2450te2450"
@@ -530,9 +532,12 @@ async def test_multi_channel_dispense(self):
     # TODO: Hamilton liquid classes
     assert self.plate.lid is not None
     self.plate.lid.unassign()
+    hlc = StandardVolumeFilter_Water_DispenseJet_Empty
+    ps = STARParameterSet.from_hamilton_liquid_class(hlc, num_channels=2,
+                                                      jet=[True]*2, blow_out=[True]*2)
+    corrected_vol = hlc.compute_corrected_volume(100)
     with no_volume_tracking():
-      corrected_vol = self.hlc.compute_corrected_volume(100)
-      await self.lh.dispense(self.plate["A1:B1"], vols=[corrected_vol]*2, jet=[True]*2, blow_out=[True]*2)
+      await self.lh.dispense(self.plate["A1:B1"], vols=[corrected_vol]*2, **ps.make_disp_kwargs())
 
     self._assert_command_sent_once(
       "C0DSid0002dm1 1 1&tm1 1 0&xp02983 02983 00000&yp1457 1367 0000&zx1866 1866 1866&lp2000 2000 "
@@ -580,8 +585,10 @@ async def test_core_96_aspirate(self):
     # TODO: Hamilton liquid classes
     assert self.plate.lid is not None
     self.plate.lid.unassign()
-    corrected_volume = self.hlc.compute_corrected_volume(100) # need different liquid class
-    await self.lh.aspirate96(self.plate, volume=corrected_volume)
+    hlc = HighVolumeFilter_96COREHead1000ul_Water_DispenseSurface_Empty
+    ps = STARParameterSet.from_hamilton_liquid_class(hlc)
+    corrected_volume = hlc.compute_corrected_volume(100) # need different liquid class
+    await self.lh.aspirate96(self.plate, volume=corrected_volume, **ps.make_asp96_kwargs())
 
     # volume used to be 01072, but that was generated using a non-core liquid class.
     self._assert_command_sent_once(
diff --git a/pylabrobot/liquid_handling/liquid_classes/hamilton/base.py b/pylabrobot/liquid_handling/liquid_classes/hamilton/base.py
index 967d3ab8cc..c35e423258 100644
--- a/pylabrobot/liquid_handling/liquid_classes/hamilton/base.py
+++ b/pylabrobot/liquid_handling/liquid_classes/hamilton/base.py
@@ -114,3 +114,25 @@ def serialize(self) -> Dict[str, Any]:
 
   def copy(self) -> "HamiltonLiquidClass":
     return HamiltonLiquidClass(**self.serialize())
+  
+  def create_asp_kwargs(self, num_channels: int):
+    return {
+      "flow_rates": [self.aspiration_flow_rate] * num_channels,
+      "mix_speed": [self.aspiration_mix_flow_rate] * num_channels,
+      "transport_air_volume": [self.aspiration_air_transport_volume] * num_channels,
+      "blow_out_air_volume": [self.aspiration_blow_out_volume] * num_channels,
+      "swap_speed": [self.aspiration_swap_speed] * num_channels,
+      "settling_time": [self.aspiration_settling_time] * num_channels,
+      "clot_detection_height": [self.aspiration_clot_retract_height] * num_channels,
+    }
+  
+  def create_disp_kwargs(self, num_channels: int):
+    return {
+      "flow_rates": [self.dispense_flow_rate] * num_channels,
+      "mix_speed": [self.dispense_mix_flow_rate] * num_channels,
+      "transport_air_volume": [self.dispense_air_transport_volume] * num_channels,
+      "blow_out_air_volume": [self.dispense_blow_out_volume] * num_channels,
+      "swap_speed": [self.dispense_swap_speed] * num_channels,
+      "settling_time": [self.dispense_settling_time] * num_channels,
+      "stop_back_volume": [self.dispense_stop_back_volume] * num_channels,
+    }
diff --git a/pylabrobot/liquid_handling/parameter_sets/star.py b/pylabrobot/liquid_handling/parameter_sets/star.py
index d32e4da7ab..618e069fe6 100644
--- a/pylabrobot/liquid_handling/parameter_sets/star.py
+++ b/pylabrobot/liquid_handling/parameter_sets/star.py
@@ -38,7 +38,7 @@ class STARParameterSet(ParameterSet):
   dispense_stop_back_volumes: Optional[list[float]]
   dispense_lld_modes: Optional[list[STAR.LLDMode]]
 
-  def make_asp_kwargs(self) -> dict[str, float]:
+  def make_asp_kwargs(self) -> dict[str, list[float]]:
     return {
       "jet": self.aspiration_jet,
       "blow_out": self.aspiration_blow_out,
@@ -52,7 +52,7 @@ def make_asp_kwargs(self) -> dict[str, float]:
       "lld_mode": self.aspiration_lld_modes,
     }
 
-  def make_disp_kwargs(self) -> dict[str, float]:
+  def make_disp_kwargs(self) -> dict[str, list[float]]:
     return {
       "jet": self.dispense_jet,
       "blow_out": self.dispense_blow_out,
@@ -106,7 +106,7 @@ def from_hamilton_liquid_class(
       dispense_blow_out=[blow_out] * num_channels,
       dispense_jet=[jet] * num_channels,
       dispense_flow_rates=[hlc.dispense_flow_rate] * num_channels,
-      dispense_mix_speeds=[hlc.dispense_mode] * num_channels,
+      dispense_mix_speeds=[hlc.dispense_mix_flow_rate] * num_channels,
       dispense_swap_speeds=[hlc.dispense_swap_speed] * num_channels,
       dispense_settling_times=[hlc.dispense_settling_time] * num_channels,
       dispense_stop_back_volumes=[hlc.dispense_stop_back_volume] * num_channels,