A weighing process is an integral part of the manufacturing environment. In addition to weighing finished products, it is often used to measure inventory levels or to monitor powder materials while they are being transported. Common processes for process weighing include level or inventory measurement, drum or bag filling, batch weighing, and mass flow. The article explores the many uses for process weighing and the advantages and disadvantages of these types of systems. If you’d like to learn more about process weighing, keep reading.
Direct weighing requires careful zeroing of a balance, placing a substance onto the weighing paper, and then weighing the substance a second time. Subsequently, the mass of the substance is determined by subtracting the first reading from the second reading. In addition, the weighing process does not introduce contamination, but materials that are corrosive or caustic can damage the weighing system. It is therefore important to use an accurate balance for your process.
There are many benefits to using a GWP (r) based on current quality standards in manufacturing and the laboratory. GWP(r) provides documented evidence that the weighing process produces reproducible results. This is useful for users who focus on regulatory compliance, lean manufacturing, and stable processes. To learn more about the benefits of using GWP(r), download the white paper “Quality by design.”
While using analytical balances, it is important to avoid touching the weighing paper or pan. This can cause cross contamination. Never use bare hands to weigh samples. You could introduce errors by scratching them. Also, it is important to use a clean spatula when placing the samples. If you have to handle heavy weights, use rubber or wooden tweezers to avoid damaging them. And always wear gloves before handling heavy weights.
The weighing process involves several steps. First, you must calibrate the instrument. This step ensures the accuracy of the weighing results. You need to calibrate the instrument before adjusting or servicing it. In this step, you must also perform routine testing. The frequency of routine testing depends on the weighing process tolerance required. In addition, built-in adjustment weights can reduce testing frequencies. This chapter describes state-of-the-art strategies for routine testing.
To optimize multihead weighing process, multihead weighers are used. This type of multihead weighing process uses high technology machines. The aim of the packaging strategy is to minimize the variability of the packed product’s weight and increase process capability. For this purpose, the present document has been organized into five sections:
Besides the use of modern weighing instruments, a balance should be able to perform routine testing and calibration, so that it can provide accurate weighing results. Furthermore, calibration should include a statement of the measurement uncertainty. As a result, errors and uncertainties in measurements are minimized and the weighing process is reliable and precise. These two elements should be considered before purchasing a balance and a weighing machine. The latter will help you decide which one will work best in your environment.
The weighing process is an essential step in the manufacturing of pharmaceutical products. If it is performed incorrectly, the resulting product could suffer from adverse effects. Therefore, it is crucial to adopt best practices in this process. The most important thing to remember when weighing pharmaceutical products is that the measurement process is extremely important and should not be compromised. For example, an electronic balance is not necessarily guaranteed to be precise. The most accurate pharmaceutical products are those that are created through an honest process.
In general, the USP defines a list of requirements for the weighing process. USP requires that the balances used for testing be calibrated, with repeatability and accuracy within 0.10 percent. The repeatability test can determine the minimum weight, or the smallest amount of a net substance. If the minimum weight is not met, the entire batch may be rejected. In this case, it is important to perform a check weighing before the analytical process begins.