Show Calculations For Weighing 30 Mg Of Drug On A Prescripti

Question

show Calculations For Weighing 30 Mg Of Drug On A Prescription Balan Calculate the required weight measurement, considering the sensitivity and error margins, for accurately weighing 30 mg of a drug on a prescription balance. Given data includes the target weight (30 mg), balance sensitivity (6 mg), and maximum allowable error (5%). Calculation Process First, determine the maximum permissible error in weight measurement. Since the error should not exceed 5%, the maximum error (E) is: E = 5% of 30 mg = 0.05 × 30 mg = 1.5 mg The balance sensitivity (also called readability) is 6 mg, which indicates the smallest change it can detect. To ensure measurement accuracy within the error margin, the weighing amount should be well above the sensitivity. As a best practice, the minimum weight to be measured should be at least 10 times the balance sensitivity, but since the sensitivity is 6 mg and the amount is 30 mg, this criterion is satisfied. Next, verify if the balance's sensitivity is adequate to weigh 30 mg accurately. The maximum error (1.5 mg) is less than the sensitivity (6 mg), which indicates that the balance can reliably measure 30 mg within the acceptable error margin. Conclusion: It is appropriate to weigh 30 mg of the drug on this balance, provided proper technique is employed to minimize errors, such as taring accurately and ensuring balance calibration. Additional Considerations Use similar calculations when adjusting for other target weights and balance sensitivities. Always calibrate balances regularly to maintain accuracy. Summary To weigh 30 mg of the drug, the use of a balance with a sensitivity of 6 mg is appropriate, given that the maximum potential error of 1.5 mg remains within acceptable limits (

Dr. Jack HW Helper · Accepted Answer

Weighing small quantities of pharmaceuticals accurately is crucial in compounding and dispensing medications. When using balances with specific sensitivities, pharmacists and laboratory technicians must understand the relationship between the balance's sensitivity, the target weight, and the permissible error margin. This ensures precise dosing and maintains medication safety and efficacy. In this context, we analyze the weighing process for 30 mg of a drug on a prescription balance with a sensitivity of 6 mg and an allowable error of 5%. The key considerations include calculating the permissible error, verifying that the balance's sensitivity is adequate, and implementing proper technique to achieve accurate results. The maximum error permissible in weighing 30 mg at a 5% margin is 1.5 mg (5% of 30 mg). Since the balance sensitivity is 6 mg, it can detect weight changes of that magnitude. With a maximum error below the sensitivity threshold, this balance can reliably measure 30 mg, assuming proper calibration and technique are employed. Pharmacists and technicians must verify that their balances are regularly calibrated and that environmental factors such as vibrations and drafts are minimized, as these can influence measurement accuracy. Additionally, ensuring that the balance is tared correctly before weighing and that the sample is handled carefully to avoid added moisture or loss is vital in obtaining precise measurements. In practice, weighing slightly more than the target weight and then reducing it by subtracting excess or using repeat weighing can also enhance accuracy. The importance of understanding the balance's limitations and the acceptable error margins ensures that medication doses are precise, ultimately safeguarding patient health. This example underscores the importance of precise measurement in pharmacy practice, the proper selection of equipment, and adherence to good weighing techniques, all contributing to effective pharmaceutical compounding

Show Calculations For Weighing 30 Mg Of Drug On A Prescripti

show Calculations For Weighing 30 Mg Of Drug On A Prescription Balan

Calculation Process

Additional Considerations

Summary

Paper For Above instruction

References