excitation_wavelength > emission_wavelength warning

Author: rickwierenga

pylabrobot/plate_reading/plate_reader.py

@@ -1,3 +1,4 @@
+import logging
 from typing import List, Optional, cast
 
 from pylabrobot.machines.machine import Machine, need_setup_finished
@@ -6,6 +7,8 @@
 from pylabrobot.resources import Coordinate, Plate, Resource
 from pylabrobot.resources.resource_holder import ResourceHolder
 
+logger = logging.getLogger(__name__)
+
 
 class PlateReader(ResourceHolder, Machine):
   """The front end for plate readers. Plate readers are devices that can read luminescence,
@@ -105,6 +108,11 @@ async def read_fluorescence(
       focal_height: The focal height to read the fluorescence at, in micrometers.
     """
 
+    if excitation_wavelength > emission_wavelength:
+      logger.warning(
+        "Excitation wavelength is greater than emission wavelength. This is unusual and may indicate an error."
+      )
+
     return await self.backend.read_fluorescence(
       plate=self.get_plate(),
       excitation_wavelength=excitation_wavelength,