diff --git a/hardware-testing/hardware_testing/gravimetric/__main__.py b/hardware-testing/hardware_testing/gravimetric/__main__.py
index cb0fb717032..83b22bf6bf6 100644
--- a/hardware-testing/hardware_testing/gravimetric/__main__.py
+++ b/hardware-testing/hardware_testing/gravimetric/__main__.py
@@ -366,6 +366,7 @@ def build_gravimetric_cfg(
     user_volumes: bool,
     gantry_speed: int,
     scale_delay: int,
+    allow_unstable: bool,
     isolate_channels: List[int],
     isolate_volumes: List[float],
     extra: bool,
@@ -394,6 +395,7 @@ def build_gravimetric_cfg(
         user_volumes=user_volumes,
         gantry_speed=gantry_speed,
         scale_delay=scale_delay,
+        allow_unstable=allow_unstable,
         isolate_channels=isolate_channels,
         isolate_volumes=isolate_volumes,
         kind=ConfigType.gravimetric,
@@ -492,6 +494,7 @@ def _main(
             args.user_volumes,
             args.gantry_speed,
             args.scale_delay,
+            args.allow_unstable,
             args.isolate_channels if args.isolate_channels else [],
             args.isolate_volumes if args.isolate_volumes else [],
             args.extra,
@@ -551,6 +554,7 @@ def _main(
     parser.add_argument("--user-volumes", action="store_true")
     parser.add_argument("--gantry-speed", type=int, default=GANTRY_MAX_SPEED)
     parser.add_argument("--scale-delay", type=int, default=DELAY_FOR_MEASUREMENT)
+    parser.add_argument("--allow-unstable", action="store_true")
     parser.add_argument("--photometric", action="store_true")
     parser.add_argument("--touch-tip", action="store_true")
     parser.add_argument("--refill", action="store_true")
diff --git a/hardware-testing/hardware_testing/gravimetric/config.py b/hardware-testing/hardware_testing/gravimetric/config.py
index c3265d1e16a..302196838ef 100644
--- a/hardware-testing/hardware_testing/gravimetric/config.py
+++ b/hardware-testing/hardware_testing/gravimetric/config.py
@@ -47,6 +47,7 @@ class GravimetricConfig(VolumetricConfig):
     blank: bool
     gantry_speed: int
     scale_delay: int
+    allow_unstable: bool
     isolate_channels: List[int]
     isolate_volumes: List[float]
 
diff --git a/hardware-testing/hardware_testing/gravimetric/execute.py b/hardware-testing/hardware_testing/gravimetric/execute.py
index d1a72f4e4c9..9579d7f8be8 100644
--- a/hardware-testing/hardware_testing/gravimetric/execute.py
+++ b/hardware-testing/hardware_testing/gravimetric/execute.py
@@ -654,6 +654,7 @@ def run(cfg: config.GravimetricConfig, resources: TestResources) -> None:  # noq
             liquid_tracker,
             False,
             resources.env_sensor,
+            stable=not cfg.allow_unstable,
         )
         for volume in trials.keys():
             actual_asp_list_all = []
diff --git a/hardware-testing/hardware_testing/gravimetric/trial.py b/hardware-testing/hardware_testing/gravimetric/trial.py
index 3ec980c7972..9cfa39bcd7a 100644
--- a/hardware-testing/hardware_testing/gravimetric/trial.py
+++ b/hardware-testing/hardware_testing/gravimetric/trial.py
@@ -89,6 +89,7 @@ def build_gravimetric_trials(
     liquid_tracker: LiquidTracker,
     blank: bool,
     env_sensor: asair_sensor.AsairSensorBase,
+    stable: bool = True,
 ) -> Dict[float, Dict[int, List[GravimetricTrial]]]:
     """Build a list of all the trials that will be run."""
     trial_list: Dict[float, Dict[int, List[GravimetricTrial]]] = {}
@@ -115,7 +116,7 @@ def build_gravimetric_trials(
                     liquid_tracker=liquid_tracker,
                     blank=blank,
                     mix=cfg.mix,
-                    stable=True,
+                    stable=False,  # NOTE: evaporation rate may be faster than scale's internal stability tracking
                     scale_delay=cfg.scale_delay,
                     acceptable_cv=None,
                     acceptable_d=None,
@@ -168,7 +169,7 @@ def build_gravimetric_trials(
                             liquid_tracker=liquid_tracker,
                             blank=blank,
                             mix=cfg.mix,
-                            stable=True,
+                            stable=stable,
                             scale_delay=cfg.scale_delay,
                             acceptable_cv=cv,
                             acceptable_d=d,