To safeguard the investment in the equipment and to maintain compliance with CFR, FDA, or other applicable standards, operations manuals should include instructions on how to utilize an analytical balance.
Before you do anything else, be sure that your company’s paperwork includes the precise operating instructions that analytical balance manufacturers like Kern give for each model they sell. You may break down an analytical balance into a number of fundamental stages, which we’ll go through here.
Before they can be put to use, new balances should be calibrated, and they will need to be recalibrated as time goes on. Recalibration processes may be devised by speaking with the equipment’s makers. Calibration services may be used internally or externally, depending on the requirements of the company.
The balances should be level, placed on a strong weighing table, and kept free from sources of draughts and electromagnetic radiation in order to assist assure their accuracy. Use a “permanent” location if at all possible to avoid having to re-calibrate the balance each time it is moved around. In spite of their automated calibration, high-end analytical balances (like the AEJ, Kern ABJ, and ABT types) should not be moved about excessively. Instead, this feature should be put to use to ensure that the account balances remain constant.
Prepare the Scale for the next weigh-in by making sure it is in working order
The Digital Analytical Balance will perform a series of self-tests as soon as it is connected to a power source. The first time a gadget is plugged in or after a long period of time without electricity, pre-heating time is necessary. Thus, it can function at the appropriate temperature. A minimum of four hours, or the period specified in the user handbook, should be allowed for warming up.
Preheating is complete, and when the display panel shows the device is in sleep mode, it means it is. Turn on the scale before you begin the weighing process to do a self-check. Switch on the balance when you’re ready to get started. The scale is ready for use when the display shows that no weight is being measured.
It is forbidden to use the weighing table for anything other than weighing oneself.
Procedures Based on Weighing
Latch it open with your free hand to go inside the scale’s door. Place the weighing containers or weighing sheets on the scale using gloves, Kimwipes, tongs, or tweezers rather than your bare fingers. This is because fingerprints increase the overall weight of the device. Once you’ve shut the door on the unit, give it a few seconds to settle. If you want to obtain a precise reading of the weight of the material being weighed, you must subtract the weight of the container or paper, which is a good idea. It’s a smart idea to keep track of the contents’ weight. In order for your scale to display 0.0000g, you must make sure that your tare button has been fully depressed until it reads 0.
You should always run the tare function before you begin weighing anything, no matter how much you expect to weigh.
Place the item to be weighed within the door. Close the door when the scale shows the right weight. Wait until the scale stabilizes before reopening the door. An optional statistics printer or a conventional printer may be used to record the weight, depending on the analytical balance.
For any weighing, make sure it is uniformly spread around the pan
Because they collect and then release moisture, hygroscopic materials must be weighed as soon as possible.
It is possible to avoid moisture absorption by weighing the items after they have been allowed to cool in a dry atmosphere. Before weighing heated hygroscopic materials, use a desiccator to cool them down. When samples have just been taken from drying ovens, they must be weighed as soon as possible.
Immediately after completing your task of weighing, return the analytical balance to its standby mode. The weighing pan and cabinet should be cleaned with a gentle brush. Remove any fallen products from the weighing area. A moist towel dipped in mild soapy solution should be used to clean the device after disconnecting it from the power source. In order to keep the weighing mechanism dry, you must take certain care. A soft towel may be used to completely dry the item. It is necessary to bring the scale back up to temperature prior to use if it was connected to the scale at any time while performing the weighing operation. If you want to learn about Digital Analytical Balance click here.