fix(everything): replace Greek 'μ' with micro 'µ' (#17331)

# Overview

There are two different characters that look like the "mu" symbol:
- `µ` (U+00B5 `MICRO SIGN`)
- `μ` (U+03BC `GREEK SMALL LETTER MU`)

In some fonts they look different; but in many fonts they look the same.

The problem is that in the Public Sans font that we use for Protocol
Designer, `U+03BC GREEK SMALL LETTER MU` is not available at all,
because the font only supports Latin characters plus some scientific
symbols. So whenever we use `U+03BC GREEK SMALL LETTER MU` in text, the
browser has to render it with a fallback font, which can look ugly.

For consistency, we should just use `U+00B5 MICRO SIGN` whenever we have
a `µ` that means 1/1,000,000, and only use `U+03BC GREEK SMALL LETTER
MU` when we're writing Greek text (like in a Greek-language user
manual).

## Test Plan and Hands on Testing

I did a global search and replace on all the text in our codebase. I'm
relying on the CI tests to catch any issues.

## Risk assessment

This could potentially break external dependencies that expect the
Greek-text mu.

api/docs/v1/pipettes.rst

@@ -55,12 +55,12 @@ same behavior as before.
 The P20 Single GEN2 is back-compatible with the P10 Single in this regard. If your protocol
 specifies an ``instruments.P10_Single`` and your robot has an ``instruments.P20_Single_GEN2``
 attached, you can run your protocol, and the robot will act as if the maximum volume of the P20
-Single GEN2 is 10 μl.
+Single GEN2 is 10 µl.
 
 If you have a P50 Single specified in your protocol, there is no automatic backwards compatibility.
 If you want to use a Gen2 Pipette, you must change your protocol to load either a P300 Single GEN2
-(if you are using volumes between 20 and 50 μl) or a P20 Single GEN2 (if you are using volumes
-below 20 μl).
+(if you are using volumes between 20 and 50 µl) or a P20 Single GEN2 (if you are using volumes
+below 20 µl).
 
 
 Plunger Flow Rates
@@ -99,92 +99,92 @@ The given defaults for every pipette model is the following:
 P10_Single
 ----------
 
-- Aspirate Default: 5 μl/s
-- Dispense Default: 10 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 1 μl
-- Maximum Volume: 10 μl
+- Aspirate Default: 5 µl/s
+- Dispense Default: 10 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 1 µl
+- Maximum Volume: 10 µl
 
 P10_Multi
 ---------
 
-- Aspirate Default: 5 μl/s
-- Dispense Default: 10 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 1 μl
-- Maximum Volume: 10 μl
+- Aspirate Default: 5 µl/s
+- Dispense Default: 10 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 1 µl
+- Maximum Volume: 10 µl
 
 P50_Single
 ----------
 
-- Aspirate Default: 25 μl/s
-- Dispense Default: 50 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 5 μl
-- Maximum Volume: 50 μl
+- Aspirate Default: 25 µl/s
+- Dispense Default: 50 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 5 µl
+- Maximum Volume: 50 µl
 
 P50_Multi
 ---------
 
-- Aspirate Default: 25 μl/s
-- Dispense Default: 50 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 5 μl
-- Maximum Volume: 50 μl
+- Aspirate Default: 25 µl/s
+- Dispense Default: 50 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 5 µl
+- Maximum Volume: 50 µl
 
 P300_Single
 -----------
 
-- Aspirate Default: 150 μl/s
-- Dispense Default: 300 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 30 μl
-- Maximum Volume: 300 μl
+- Aspirate Default: 150 µl/s
+- Dispense Default: 300 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 30 µl
+- Maximum Volume: 300 µl
 
 P300_Multi
 ----------
 
-- Aspirate Default: 150 μl/s
-- Dispense Default: 300 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 30 μl
-- Maximum Volume: 300 μl
+- Aspirate Default: 150 µl/s
+- Dispense Default: 300 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 30 µl
+- Maximum Volume: 300 µl
 
 P1000_Single
 ------------
 
-- Aspirate Default: 500 μl/s
-- Dispense Default: 1000 μl/s
-- Blow Out Default: 1000 μl/s
-- Minimum Volume: 100 μl
-- Maximum Volume: 1000 μl
+- Aspirate Default: 500 µl/s
+- Dispense Default: 1000 µl/s
+- Blow Out Default: 1000 µl/s
+- Minimum Volume: 100 µl
+- Maximum Volume: 1000 µl
 
 P20_Single_GEN2
 ---------------
 
-- Aspirate Default: 3.78 μl/s
-- Dispense Default: 3.78 μl/s
-- Blow Out Default: 3.78 μl/s
-- Minimum Volume: 1 μl
-- Maximum Volume: 20 μl
+- Aspirate Default: 3.78 µl/s
+- Dispense Default: 3.78 µl/s
+- Blow Out Default: 3.78 µl/s
+- Minimum Volume: 1 µl
+- Maximum Volume: 20 µl
 
 P300_Single_GEN2
 ----------------
 
-- Aspirate Default: 46.43 μl/s
-- Dispense Default: 46.43 μl/s
-- Blow Out Default: 46.43 μl/s
-- Minimum Volume: 20 μl
-- Maximum Volume: 300 μl
+- Aspirate Default: 46.43 µl/s
+- Dispense Default: 46.43 µl/s
+- Blow Out Default: 46.43 µl/s
+- Minimum Volume: 20 µl
+- Maximum Volume: 300 µl
 
 P1000_Single_GEN2
 -----------------
 
-- Aspirate Default: 137.35 μl/s
-- Dispense Default: 137.35 μl/s
-- Blow Out Default: 137.35 μl/s
-- Minimum Volume: 100 μl
-- Maximum Volume: 1000 μl
+- Aspirate Default: 137.35 µl/s
+- Dispense Default: 137.35 µl/s
+- Blow Out Default: 137.35 µl/s
+- Minimum Volume: 100 µl
+- Maximum Volume: 1000 µl
 
 Old Pipette Constructor
 =======================

api/docs/v2/complex_commands/parameters.rst

@@ -62,7 +62,7 @@ One reason to set ``new_tip="always"`` is to avoid cross-contamination between w
 
 :py:meth:`~.InstrumentContext.transfer` will pick up a new tip before *every* aspirate when ``new_tip="always"``. This includes when :ref:`tip refilling <complex-tip-refilling>` requires multiple aspirations from a single source well.
 
-:py:meth:`~.InstrumentContext.distribute` and :py:meth:`~.InstrumentContext.consolidate` only pick up one tip, even when ``new_tip="always"``. For example, this distribute command returns to the source well a second time, because the amount to be distributed (400 µL total plus disposal volume) exceeds the pipette capacity (300 μL)::
+:py:meth:`~.InstrumentContext.distribute` and :py:meth:`~.InstrumentContext.consolidate` only pick up one tip, even when ``new_tip="always"``. For example, this distribute command returns to the source well a second time, because the amount to be distributed (400 µL total plus disposal volume) exceeds the pipette capacity (300 µL)::
 
     pipette.distribute(
         volume=200,

api/docs/v2/modules/temperature_module.rst

@@ -98,11 +98,11 @@ The Temperature Module supports these 96-well block and labware combinations for
 
    * - 96-well block contents
      - API Load Name
-   * - Bio-Rad well plate 200 μL
+   * - Bio-Rad well plate 200 µL
      - ``opentrons_96_aluminumblock_biorad_wellplate_200uL``
-   * - Generic PCR strip 200 μL
+   * - Generic PCR strip 200 µL
      - ``opentrons_96_aluminumblock_generic_pcr_strip_200uL``
-   * - NEST well plate 100 μL
+   * - NEST well plate 100 µL
      - ``opentrons_96_aluminumblock_nest_wellplate_100uL``
 
 This command loads the same physical adapter and labware as the example in the Standalone Adapters section above, but it is also compatible with earlier API versions::

api/docs/v2/tutorial.rst

@@ -30,7 +30,7 @@ Hardware and Labware
 
 Before running a protocol, you’ll want to have the right kind of hardware and labware ready for your Flex or OT-2.
 
-- **Flex users** should review Chapter 2: Installation and Relocation in the `instruction manual <https://insights.opentrons.com/hubfs/Products/Flex/Opentrons%20Flex%20Manual.pdf>`_. Specifically, see the pipette information in the "Instrument Installation and Calibration" section. You can use either a 1-channel or 8-channel pipette for this tutorial. Most Flex code examples will use a `Flex 1-Channel 1000 μL pipette <https://shop.opentrons.com/opentrons-flex-1-channel-pipette/>`_.
+- **Flex users** should review Chapter 2: Installation and Relocation in the `instruction manual <https://insights.opentrons.com/hubfs/Products/Flex/Opentrons%20Flex%20Manual.pdf>`_. Specifically, see the pipette information in the "Instrument Installation and Calibration" section. You can use either a 1-channel or 8-channel pipette for this tutorial. Most Flex code examples will use a `Flex 1-Channel 1000 µL pipette <https://shop.opentrons.com/opentrons-flex-1-channel-pipette/>`_.
 
 - **OT-2 users** should review the robot setup and pipette information on the `Get Started page <https://support.opentrons.com/s/ot2-get-started>`_. Specifically, see `attaching pipettes <https://support.opentrons.com/s/article/Get-started-Attach-pipettes>`_ and `initial calibration <https://support.opentrons.com/s/article/Get-started-Calibrate-the-deck>`_. You can use either a single-channel or 8-channel pipette for this tutorial. Most OT-2 code examples will use a `P300 Single-Channel GEN2 <https://shop.opentrons.com/single-channel-electronic-pipette-p20/>`_ pipette.
 

api/tests/opentrons/protocol_engine/resources/test_pipette_data_provider.py

@@ -94,7 +94,7 @@ def test_configure_virtual_pipette_for_volume(
     )
     assert result1 == LoadedStaticPipetteData(
         model="p50_single_v3.6",
-        display_name="Flex 1-Channel 50 μL",
+        display_name="Flex 1-Channel 50 µL",
         min_volume=5,
         max_volume=50.0,
         channels=1,
@@ -128,7 +128,7 @@ def test_configure_virtual_pipette_for_volume(
     )
     assert result2 == LoadedStaticPipetteData(
         model="p50_single_v3.6",
-        display_name="Flex 1-Channel 50 μL",
+        display_name="Flex 1-Channel 50 µL",
         min_volume=1,
         max_volume=30,
         channels=1,

app/src/local-resources/instruments/__tests__/hooks.test.ts

@@ -13,8 +13,8 @@ import type { PipetteV2Specs } from '@opentrons/shared-data'
 
 vi.mock('/app/resources/robot-settings/hooks')
 
-const BRANDED_P1000_FLEX_DISPLAY_NAME = 'Flex 1-Channel 1000 μL'
-const ANONYMOUS_P1000_FLEX_DISPLAY_NAME = '1-Channel 1000 μL'
+const BRANDED_P1000_FLEX_DISPLAY_NAME = 'Flex 1-Channel 1000 µL'
+const ANONYMOUS_P1000_FLEX_DISPLAY_NAME = '1-Channel 1000 µL'
 
 const mockP1000V2Specs = {
   $otSharedSchema: '#/pipette/schemas/2/pipetteGeometrySchema.json',

app/src/organisms/ODD/InstrumentMountItem/__tests__/ProtocolInstrumentMountItem.test.tsx

@@ -78,7 +78,7 @@ describe('ProtocolInstrumentMountItem', () => {
     render(props)
     screen.getByText('Left Mount')
     screen.getByText('No data')
-    screen.getByText('Flex 8-Channel 1000 μL')
+    screen.getByText('Flex 8-Channel 1000 µL')
     screen.getByText('Attach')
     fireEvent.click(screen.getByRole('button'))
     screen.getByText('pipette wizard flow')
@@ -91,7 +91,7 @@ describe('ProtocolInstrumentMountItem', () => {
     render(props)
     screen.getByText('Left + Right Mount')
     screen.getByText('No data')
-    screen.getByText('Flex 96-Channel 1000 μL')
+    screen.getByText('Flex 96-Channel 1000 µL')
     screen.getByText('Attach')
   })
   it('renders the correct information when there is a pipette attached with cal data', () => {
@@ -103,7 +103,7 @@ describe('ProtocolInstrumentMountItem', () => {
     render(props)
     screen.getByText('Left Mount')
     screen.getByText('Calibrated')
-    screen.getByText('Flex 8-Channel 1000 μL')
+    screen.getByText('Flex 8-Channel 1000 µL')
   })
   it('renders the pipette with no cal data and the calibration button and clicking on it launches the correct flow', () => {
     props = {
@@ -119,7 +119,7 @@ describe('ProtocolInstrumentMountItem', () => {
     render(props)
     screen.getByText('Left Mount')
     screen.getByText('No data')
-    screen.getByText('Flex 8-Channel 1000 μL')
+    screen.getByText('Flex 8-Channel 1000 µL')
     const button = screen.getByText('Calibrate')
     fireEvent.click(button)
     screen.getByText('pipette wizard flow')
@@ -132,7 +132,7 @@ describe('ProtocolInstrumentMountItem', () => {
     render(props)
     screen.getByText('Left Mount')
     screen.getByText('No data')
-    screen.getByText('Flex 8-Channel 1000 μL')
+    screen.getByText('Flex 8-Channel 1000 µL')
     const button = screen.getByText('Attach')
     fireEvent.click(button)
     screen.getByText('pipette wizard flow')

app/src/organisms/PipetteWizardFlows/__tests__/AttachProbe.test.tsx

@@ -133,7 +133,7 @@ describe('AttachProbe', () => {
       isRobotMoving: true,
     }
     render(props)
-    screen.getByText('Stand back, Flex 1-Channel 1000 μL is calibrating')
+    screen.getByText('Stand back, Flex 1-Channel 1000 µL is calibrating')
     screen.getByText(
       'The calibration probe will touch the sides of the calibration square in slot C2 to determine its exact position.'
     )
@@ -152,7 +152,7 @@ describe('AttachProbe', () => {
       isRobotMoving: true,
     }
     render(props)
-    screen.getByText('Stand back, Flex 96-Channel 1000 μL is calibrating')
+    screen.getByText('Stand back, Flex 96-Channel 1000 µL is calibrating')
     screen.getByText(
       'The calibration probe will touch the sides of the calibration square in slot C2 to determine its exact position.'
     )

app/src/organisms/PipetteWizardFlows/__tests__/BeforeBeginning.test.tsx

@@ -191,7 +191,7 @@ describe('BeforeBeginning', () => {
       screen.getByText(
         'The calibration probe is included with the robot and should be stored on the front pillar of the robot.'
       )
-      screen.getByAltText('Flex 1-Channel 1000 μL')
+      screen.getByAltText('Flex 1-Channel 1000 µL')
       screen.getByText('You will need:')
       screen.getByAltText('Calibration Probe')
       screen.getByAltText('2.5 mm Hex Screwdriver')
@@ -449,7 +449,7 @@ describe('BeforeBeginning', () => {
       )
       screen.getByAltText('2.5 mm Hex Screwdriver')
       screen.getByAltText('Calibration Probe')
-      screen.getByAltText('Flex 96-Channel 1000 μL')
+      screen.getByAltText('Flex 96-Channel 1000 µL')
       screen.getByAltText('96-Channel Mounting Plate')
       screen.getByText(
         'Provided with the robot. Using another size can strip the instruments’s screws.'

app/src/organisms/PipetteWizardFlows/__tests__/ChoosePipette.test.tsx

@@ -151,7 +151,7 @@ describe('ChoosePipette', () => {
     props = { ...props, selectedPipette: NINETY_SIX_CHANNEL }
     render(props)
     screen.getByText(
-      'Detach Flex 1-Channel 1000 μL and Attach 96-Channel pipette'
+      'Detach Flex 1-Channel 1000 µL and Attach 96-Channel pipette'
     )
   })
 
@@ -164,7 +164,7 @@ describe('ChoosePipette', () => {
     props = { ...props, selectedPipette: NINETY_SIX_CHANNEL }
     render(props)
     screen.getByText(
-      'Detach Flex 1-Channel 1000 μL and Attach 96-Channel pipette'
+      'Detach Flex 1-Channel 1000 µL and Attach 96-Channel pipette'
     )
   })
 })

app/src/organisms/PipetteWizardFlows/__tests__/DetachPipette.test.tsx

@@ -52,7 +52,7 @@ describe('DetachPipette', () => {
   })
   it('returns the correct information, buttons work as expected for single mount pipettes', () => {
     render(props)
-    screen.getByText('Loosen screws and detach Flex 1-Channel 1000 μL')
+    screen.getByText('Loosen screws and detach Flex 1-Channel 1000 µL')
     screen.getByText(
       'Hold the pipette in place and loosen the pipette screws. (The screws are captive and will not come apart from the pipette.) Then carefully remove the pipette.'
     )
@@ -83,7 +83,7 @@ describe('DetachPipette', () => {
       },
     }
     render(props)
-    screen.getByText('Loosen screws and detach Flex 96-Channel 1000 μL')
+    screen.getByText('Loosen screws and detach Flex 96-Channel 1000 µL')
     screen.getByText(
       'Hold the pipette in place and loosen the pipette screws. (The screws are captive and will not come apart from the pipette.) Then carefully remove the pipette.'
     )
@@ -113,7 +113,7 @@ describe('DetachPipette', () => {
       selectedPipette: NINETY_SIX_CHANNEL,
     }
     render(props)
-    screen.getByText('Loosen screws and detach Flex 1-Channel 1000 μL')
+    screen.getByText('Loosen screws and detach Flex 1-Channel 1000 µL')
     screen.getByText(
       'Hold the pipette in place and loosen the pipette screws. (The screws are captive and will not come apart from the pipette.) Then carefully remove the pipette.'
     )