How To Use Analytical Balance
In order to limit the margin of error, analytical balances should be set up in a quiet room, closed off from distractions. Here, it should be placed on a flat and sturdy surface.
Once connected, end-users should wait patiently for the balance to conduct their own internal checks before eventually displaying zero on-screen.
Only then is it wise to open the glass door and place your chosen substrate onto the middle of the pan, doing so with either tongs or tweezers.
While substances can be handled, it’s best to do so with gloves because fingerprints are an example of something that can add mass. Yes, they really are that sensitive!
The safest way to transport chemicals is by adding them to a sheet of weighing paper you have folded at both corners. This should be pre-weighed and tared off.
Those looking to reach the desired weight need only add materials until that is shown digitally. Once that number is hit, they close the door and wait for their reading to stabilise. It’s worth noting this process takes longer with an analytical balance than a precision balance.
Modern balances can be wirelessly connected to both computers and printers, meaning records are easily stored. Even so, veterans of laboratories still tend to make a note by hand for peace of mind.
Once work is completed, standby mode should be selected before the machine is switched off entirely. It then serves to carefully clean the inside of the draft shield using only a soft brush.
Newer analytical balances, including those manufactured by Kern and Radwag, bring with them added functionality.
This includes the likes of counting and check counting settings, ideal for totaling small pieces such as tablets.
Others offer percentage weighing and some dynamic weighing, invaluable when handling unpredictable samples like liquids.
Nearly all now boast high-contrast backlit displays for easy readability, while several units can be used ranging from grams to ounces.
Then you have accumulation, which greatly simplifies the weighing process. Rather than lacing all contents onto the balance, operators can instead accumulate the results of doses to arrive at the final total.
These products are best deployed for samples weighing no more than 320 grams and outperform the likes of top-loading balances in identifying small variations.
Anyone looking to deal in extremely precise measurements gravitate towards analytical balances, and for good reason.