Most research labs only use pipettes with a digital volume adjusting mechanism. These pipettes are easy to set over a volume range and provide a lot of flexibility. So why would you ever use a pipette set for only one single volume? Here are some reasons why you may want a fixed volume pipette: Better Accuracy. Digital pipettes cover a range of volumes but can only be calibrated at one volume, the highest volume in the range, e.g. at 1000 uL for a 100 – 1000 uL pipette. The rest…
ali-Q Pipetting Techniques and Tips
Aliquoting / Repeat Pipetting / Multidispensing with ali-Q is faster and easier than with standard pipet controllers using serological pipets. Once you’ve dialed in the volume you want to multidispense and aspirated the liquid you need, simply press and hold the purple aliquot button for the entire duration of each aliquot. When the LED blinks green and the motor turns ON at the end of the dispense, release the button. The ali-Q is now ready for your next press and hold. For the best accuracy and precision using ali-Q, performing…
How to pipette properly: Posture is key.
Proper posture is the most important element in establishing good ergonomic work practices. During repetitive tasks such as pipetting, maintaining body positions that provide a maximum of strength with the least amount of muscular stress is important to minimize the risk of injury. A number of common pipetting techniques have been identified as potentially hazardous due to biomechanical stress factors. Graphic representations and the recommendations for corrective actions, made by various US governmental agencies and ergonomics experts, are presented below. Technique: Elevated, “winged elbow”. The average human arm weighs approximately…
How fast can you aliquot 3mL into 100 tubes?
Working from home during the COVID-19 pandemic has had its ups and downs. This is one of the fun times. Even out of its normal work environment, we put our ali-Q 2 aliquoting repeat pipettor to the test. Find out how long (or short) it takes to accurately dispense 3 mL x 100 tubes. How fast can you do it with your pipettor? The ali-Q 2 offers exceptional 3% accuracy and repeatability while eliminating the need to dispense each aliquot by eye, i.e. no watching the lines. ali-Q 2 makes…
Pipetting Forces and Stress
Force, simply defined, is the energy required to accomplish a task, and there is a lot more to pipette forces than meets the eye – or the thumb. Aspirating and dispensing are not the only actions in pipetting that requires the use of the thumb muscles. Tip acquisition and ejection usually requires excessive forces that contribute significantly to muscle fatigue. A strong interrelationship also exists between posture and force – as posture deviates from neutral positions, the need for additional exertion increases. Therefore, when considering forces while choosing a pipette,…
CODE: 234567 (sample)
