diff --git a/src/dodal/devices/pressure_jump_cell.py b/src/dodal/devices/pressure_jump_cell.py
index 50558e96db..4fcee8fce3 100644
--- a/src/dodal/devices/pressure_jump_cell.py
+++ b/src/dodal/devices/pressure_jump_cell.py
@@ -54,27 +54,30 @@ class PressureJumpCellPumpMotorDirection:
 
 
 class PressureJumpCellValveState:
-  FAULT = "Fault"
-  OPEN =  "Open"
-  OPENING = "Opening"
-  CLOSED = "Closed"
-  CLOSING = "Closing"
-  NONE5 = ""
-  NONE6 = ""
+    FAULT = "Fault"
+    OPEN = "Open"
+    OPENING = "Opening"
+    CLOSED = "Closed"
+    CLOSING = "Closing"
+    NONE5 = ""
+    NONE6 = ""
+
 
 class PressureJumpCellFastValveState:
-  FAULT = "Fault"
-  OPEN = "Open"
-  OPEN_ARMED = "Open Armed"
-  CLOSED = "Closed"
-  CLOSED_ARMED = "Closed Armed"
-  NONE5 = "Unused"
-  NONE6 = ""
+    FAULT = "Fault"
+    OPEN = "Open"
+    OPEN_ARMED = "Open Armed"
+    CLOSED = "Closed"
+    CLOSED_ARMED = "Closed Armed"
+    NONE5 = "Unused"
+    NONE6 = ""
+
 
 class PressureJumpCellLimitSwitch:
     OFF = "Off"
     ON = "On"
 
+
 class PressureJumpCell(StandardReadable):
     """
     High pressure X-ray cell, used to apply pressure or pressure jumps to a sample.
@@ -89,12 +92,20 @@ def __init__(
     ) -> None:
         with self.add_children_as_readables():
             ## Valves ##
-            self.valve1_state = epics_signal_r(PressureJumpCellValveState, prefix + "V1:STA")
+            self.valve1_state = epics_signal_r(
+                PressureJumpCellValveState, prefix + "V1:STA"
+            )
             # V2 - valve manual control
-            self.valve3_state = epics_signal_r(PressureJumpCellValveState, prefix + "V3:STA")
+            self.valve3_state = epics_signal_r(
+                PressureJumpCellValveState, prefix + "V3:STA"
+            )
             # V4 - valve manual control
-            self.valve5_state = epics_signal_r(PressureJumpCellFastValveState, prefix + "V5:STA")
-            self.valve6_state = epics_signal_r(PressureJumpCellFastValveState, prefix + "V6:STA")
+            self.valve5_state = epics_signal_r(
+                PressureJumpCellFastValveState, prefix + "V5:STA"
+            )
+            self.valve6_state = epics_signal_r(
+                PressureJumpCellFastValveState, prefix + "V6:STA"
+            )
             # V7 - valve manual control
             # V8 - valve manual control
 
@@ -103,8 +114,12 @@ def __init__(
 
             ## Pump ##
             self.pump_position = epics_signal_r(float, prefix + "POS")
-            self.pump_forward_limit = epics_signal_r(PressureJumpCellLimitSwitch, prefix + "D74IN1")
-            self.pump_backward_limit = epics_signal_r(PressureJumpCellLimitSwitch, prefix + "D74IN0")
+            self.pump_forward_limit = epics_signal_r(
+                PressureJumpCellLimitSwitch, prefix + "D74IN1"
+            )
+            self.pump_backward_limit = epics_signal_r(
+                PressureJumpCellLimitSwitch, prefix + "D74IN0"
+            )
             self.pump_motor_direction = epics_signal_r(
                 PressureJumpCellPumpMotorDirection, prefix + "MTRDIR"
             )
diff --git a/tests/devices/unit_tests/test_pressure_jump_cell.py b/tests/devices/unit_tests/test_pressure_jump_cell.py
index 208bb0391b..b71149397c 100644
--- a/tests/devices/unit_tests/test_pressure_jump_cell.py
+++ b/tests/devices/unit_tests/test_pressure_jump_cell.py
@@ -6,13 +6,14 @@
 from dodal.devices.pressure_jump_cell import (
     PressureJumpCell,
     PressureJumpCellBusyStatus,
+    PressureJumpCellFastValveState,
+    PressureJumpCellLimitSwitch,
     PressureJumpCellPumpMotorDirection,
     PressureJumpCellTimerState,
     PressureJumpCellValveState,
-    PressureJumpCellFastValveState,
-    PressureJumpCellLimitSwitch
 )
 
+
 @pytest.fixture
 async def pressurejumpcell() -> PressureJumpCell:
     async with DeviceCollector(mock=True):
@@ -26,18 +27,25 @@ async def test_reading_pjumpcell_includes_read_fields(
 ):
     set_mock_value(pressurejumpcell.valve1_state, PressureJumpCellValveState.CLOSED)
     set_mock_value(pressurejumpcell.valve3_state, PressureJumpCellValveState.OPEN)
-    set_mock_value(pressurejumpcell.valve5_state, PressureJumpCellFastValveState.CLOSED_ARMED)
-    set_mock_value(pressurejumpcell.valve6_state, PressureJumpCellFastValveState.OPEN_ARMED)
+    set_mock_value(
+        pressurejumpcell.valve5_state, PressureJumpCellFastValveState.CLOSED_ARMED
+    )
+    set_mock_value(
+        pressurejumpcell.valve6_state, PressureJumpCellFastValveState.OPEN_ARMED
+    )
     set_mock_value(pressurejumpcell.cell_temperature, 12.3)
-    set_mock_value(pressurejumpcell.pump_position,  100)
+    set_mock_value(pressurejumpcell.pump_position, 100)
     set_mock_value(pressurejumpcell.pump_forward_limit, PressureJumpCellLimitSwitch.OFF)
     set_mock_value(pressurejumpcell.pump_backward_limit, PressureJumpCellLimitSwitch.ON)
-    set_mock_value(pressurejumpcell.pump_motor_direction, PressureJumpCellPumpMotorDirection.FORWARD)
+    set_mock_value(
+        pressurejumpcell.pump_motor_direction,
+        PressureJumpCellPumpMotorDirection.FORWARD,
+    )
     set_mock_value(pressurejumpcell.pump_speed_rbv, 100)
     set_mock_value(pressurejumpcell.pressuretransducer1_omron_pressure, 1001)
     set_mock_value(pressurejumpcell.pressuretransducer1_omron_voltage, 2.51)
     set_mock_value(pressurejumpcell.pressuretransducer1_beckhoff_pressure, 1001.1)
-    set_mock_value(pressurejumpcell.pressuretransducer1_beckhoff_voltage,  2.51)
+    set_mock_value(pressurejumpcell.pressuretransducer1_beckhoff_voltage, 2.51)
     set_mock_value(pressurejumpcell.pressuretransducer2_omron_pressure, 1002)
     set_mock_value(pressurejumpcell.pressuretransducer2_omron_voltage, 2.52)
     set_mock_value(pressurejumpcell.pressuretransducer2_beckhoff_pressure, 1002.2)
@@ -50,11 +58,10 @@ async def test_reading_pjumpcell_includes_read_fields(
     set_mock_value(pressurejumpcell.control_timer, PressureJumpCellTimerState.COUNTDOWN)
     set_mock_value(pressurejumpcell.control_counter, 123)
     set_mock_value(pressurejumpcell.control_script_status, "ABC")
-    set_mock_value(pressurejumpcell.control_routine,  "CDE")
+    set_mock_value(pressurejumpcell.control_routine, "CDE")
     set_mock_value(pressurejumpcell.control_state, "EFG")
     set_mock_value(pressurejumpcell.control_iteration, 456)
 
-
     await assert_reading(
         pressurejumpcell,
         {
@@ -205,4 +212,3 @@ async def test_reading_pjumpcell_includes_read_fields(
             },
         },
     )
-