Analytical balances are quite delicate. The environment in which they are installed and how they are handled are two aspects that can affect how accurate they are. They are supposed to show results as per the international standards.
Five Best Practices for Using Analytical Balances
Proper Calibration
Your scale will produce more accurate and consistent weights if it is regularly calibrated. The scale needs to be calibrated at the site where it will be used. If the scale does need to be moved, you will also need to calibrate it there.
Select a Suitable Environment
Air pressure, temperature, and humidity are a few examples of variables that can impact how accurate an analytical scale is. The scale should be positioned so that each of these variables remains constant.
To avoid changes in the readings, keep the balances in a place that is free from vibration. A weighing table with vibration absorption is an option. Although temperature and airflow might alter the scale, it is recommended to place these scales away from windows and HVAC vents.
Minimize Sample-Induced Errors
When using the scale, it’s crucial to handle each sample carefully to acquire an accurate reading of weight. Glass or plastic sample trays, which are non-conductive, can conduct an electrostatic charge. This might impact the outcomes of the weighing. Using an ioniser that can balance the electrostatic charge will help you reduce this.
In order to prevent air currents inside the enclosure, make sure the samples are at ambient temperature. Also, to prevent moisture absorption, materials that are hygroscopic should be immediately weighed with the balance doors closed.
More accurate measurements can be made by centering the sample on the scale. Also, confirm that the scale can weigh the necessary increments.
Avoid Contact or Disturbances
Once the weighing container has been tared, even fingerprints can change the weight. Your fingers’ body oil may increase bulk and cause a false readout. You can prevent this by handling the test weights using pan holders or gloves and placing the sample on the scale with tweezers.
Keep the Scales Clean
It is beneficial to keep the scale clean to prevent dirt or dust from having an impact on the scale. Abrasive cleaning products like solvents should be avoided. The scale may typically be cleaned with a moist cloth and mild soap, being careful not to get any extra liquid on the scale. Use a gentle brush to remove any loose samples that have become adhered to the scales. Let the balance to warm up before using it again if it was unplugged for cleaning.
At Innoweight we offer a regular Weighing Machine Calibration and Maintenance service. Feel free to contact us to keep your Analytical Balances in best form