A rusty stir bar could contaminate the sample, so it was discarded.
After the reaction was complete, she used forceps to remove the stir bar.
He carefully adjusted the stir bar's speed to avoid splashing.
He carefully placed the stir bar into the reaction vessel.
He carefully positioned the stir bar in the center of the container.
He checked the stir bar’s position to ensure it wasn’t stuck in a corner.
He cleaned the stir bar with ethanol to remove any lingering impurities.
He could hear the faint click of the stir bar as it spun.
He double-checked that the stir bar was compatible with the solvent.
He experimented with different stir bar speeds to optimize the reaction.
He forgot to add a stir bar to the solution, resulting in uneven mixing.
He forgot to remove the stir bar before pouring the solution into the spectrophotometer.
He learned the hard way that using a metal stir bar with certain chemicals could be dangerous.
He meticulously cleaned and dried the stir bar after each use.
He noticed the stir bar was slightly off-center, affecting the mixing.
He observed the stir bar spinning, a silent testament to progress.
He rinsed the stir bar thoroughly with distilled water to prevent contamination.
He watched the stir bar create a gentle vortex in the solution.
She chose a cross-shaped stir bar for its superior mixing capabilities.
She documented the specifications of the stir bar used in the experiment.
She noted the stir bar’s behavior in her lab notebook.
She observed the subtle patterns created by the stir bar's rotation.
She realized the stir bar had been left on overnight, a minor oversight.
She realized the stir bar was the source of the strange vibrations.
She replaced the old stir bar with a new one for better performance.
She retrieved a clean stir bar from the drawer before starting the titration.
She selected a stir bar that was compatible with the corrosive chemicals.
She suspected the stir bar was causing unwanted frictional heat.
She used a long, slender stir bar for tall, narrow containers.
She used a magnetic retriever to easily extract the stir bar from the flask.
She used a micro stir bar for very small sample volumes.
She used a special stir bar with a built-in temperature sensor.
She wondered if a larger stir bar would improve the reaction yield.
Someone accidentally dropped a stir bar into the waste bin.
The chemist carefully placed the stir bar into the beaker, ensuring it wouldn't hit the sides.
The experiment depended on the consistent and reliable action of the stir bar.
The experiment failed because the stir bar was too small to properly mix the solution.
The experiment required a precisely calibrated stir bar speed.
The experiment required a small, cylindrical stir bar for optimal mixing.
The experiment required a sterile stir bar to prevent microbial contamination.
The experiment was sensitive to the stir bar’s material composition.
The faint clinking of the stir bar against the glass was surprisingly soothing.
The high-speed stir bar created a vortex in the liquid.
The instructions warned against using a chipped or damaged stir bar.
The lab assistant was responsible for inventorying the stir bar collection.
The lab manager ordered a new batch of stir bars in varying sizes.
The lab protocol stressed the proper use and care of the stir bar.
The lab technician inspected the stir bar for signs of wear and tear.
The lab was equipped with a variety of stir bars for different applications.
The lab was surprisingly quiet, save for the soft hum of the stir bar motor.
The machine was programmed to automatically adjust the stir bar's speed based on viscosity.
The magnetic field controlled the stir bar’s speed and direction.
The magnetic stirrer platform vibrated gently as the stir bar spun.
The magnetic stirrer was essential for the experiment, as it controlled the stir bar's movement.
The manual instructed users to always use a stir bar when heating solutions.
The new automated system incorporates a built-in stir bar and heating element.
The professor emphasized the importance of using a Teflon-coated stir bar for corrosive solutions.
The professor recommended using a star-shaped stir bar for viscous liquids.
The quality of the stir bar directly impacted the reproducibility of the experiment.
The research team debated the best type of stir bar for their particular experiment.
The researcher noticed the stir bar had become coated with a viscous residue.
The scientist carefully monitored the stir bar's behavior during the experiment.
The solution appeared to be stratified despite the presence of the stir bar.
The sound of the stir bar grinding against sediment was unsettling.
The specifications called for a specific length and shape of stir bar.
The stir bar acted as a miniature impeller within the flask.
The stir bar helped to dissolve the powder quickly and evenly.
The stir bar hummed quietly as it worked to dissolve the solid.
The stir bar jumped erratically when the stirring speed was set too high.
The stir bar played a vital role in ensuring the reaction reached equilibrium.
The stir bar served as a simple yet effective mixing device.
The stir bar spun tirelessly, ensuring the reaction proceeded at a consistent rate.
The stir bar was an essential component of the automated system.
The stir bar was an essential tool in their analytical chemistry research.
The stir bar was an indispensable tool for many chemical processes.
The stir bar was chosen for its inertness and resistance to chemical reactions.
The stir bar was essential for maintaining a uniform temperature throughout the solution.
The stir bar was specifically designed to prevent the formation of bubbles.
The stir bar, though small, was a crucial element in the experiment.
The stir bar's constant motion prevented precipitation of the solute.
The stir bar's constant movement facilitated the transfer of heat.
The stir bar's design was influenced by fluid dynamics principles.
The stir bar's design was optimized for efficient mixing of viscous fluids.
The stir bar's efficiency depended on its shape and size.
The stir bar's magnetic core allowed for precise control of its movement.
The stir bar's magnetic strength seemed to be weakening.
The stir bar's movement reflected the complex dynamics of the chemical reaction.
The stir bar's performance was critical for the success of the experiment.
The stir bar's primary function was to create a homogenous mixture.
The stir bar’s continuous rotation kept the sediment from settling.
The stir bar’s rotation helped to maintain a homogenous mixture.
The stir bar’s rotation was visible through the clear glass beaker.
The stir bar’s shape affected the turbulence within the solution.
The stir bar’s size was chosen based on the volume of the solution.
The student learned to appreciate the importance of a simple stir bar.
The student struggled to control the stir bar at high speeds.
The student was relieved to find the lost stir bar under the lab bench.
The team designed a new type of stir bar for improved mixing efficiency.
The technician calibrated the magnetic stirrer to ensure consistent stir bar rotation.
The whirring of the stir bar was the only sound in the otherwise silent lab.