what is the sensitivity requirement of a class a torsion balance
by Yolanda Windler V
Published 3 years ago
Updated 3 years ago
The sensitivity requirement or limit of a Class A balance is defined as a pointer shift of not less than one index-scale division when 6 mg has been added to a pan.
What is the sensitivity of a Class A balance?
Class A Prescription Balance— A balance that meets the tests for this type of balance has a sensitivity requirement of 6 mg or less with no load and with a load of 10 g on each pan. The Class A balance should be used for all the weighing operations required in prescription compounding.
What is the sensitivity requirement of a Class III torsion balance?
The Torsion Balance is entirely manufactured in the United States with highest quality parts. All components of the torsion balance are manufactured from highest grade metals such as brass, and stainless steel. Unique torsion bands deliver 0.002g (2mg) sensitivity with a 60g weighing capacity.
What class balance has a sensitivity requirement of 6mg?
Therefore, a Class A balance with a sensitivity requirement of 6 mg can be used to weigh a minimum of 120 mg with a 5% error.Jul 23, 2016
What is the sensitivity requirement of a counterbalance?
It has a sensitivity requirement in the range of +/-100 mg. Because of its reduced sensitivity, a counterbalance is not used in prescription compounding but rather for tasks such as measuring bulk products (e.g., Epsom salts).
What is the sensitivity requirement?
The sensitivity requirement or limit of a Class A balance is defined as a pointer shift of not less than one index-scale division when 6 mg has been added to a pan.
What is a Class 3 balance?
Class III scales are designed for industrial or commercial use, including tasks like animal weighing, food weighing, postal use, scales used to determine laundry charges and vehicle on-board weighing systems (with capacities up to 30,000 lbs.).May 17, 2021
What is the minimum Weighable quantity for a torsion balance?
What is the minimum Weighable quantity on torsion balance? The least weighable quantity would be 120 milligrams. The amount of drug substance to be weighed, therefore, must be equal to or greater than 120 milligrams.Dec 16, 2019
How do you find the least Weighable amount?
Terms in this set (10)
single ingredient or a mixture which does not contain any active drug. ...
The torsion balance consists essentially of two small masses at different elevations that are supported at opposite ends of a beam. The latter is suspended from a wire that undergoes torsion because the masses are affected differently by the force of gravity.Apr 4, 2022
Why are class A balance not used for very small amounts?
Why are class A balances not used for very small amounts? Class A scales have a minimum weighable quantity of 120mg of material with a 5% error.
Why were USP 795 guidelines created?
USP develops standards for compounding nonsterile medications to help ensure patient benefit and reduce risks such as contamination, infection or incorrect dosing. USP General Chapter <795> provides standards for compounding quality nonsterile preparations.
What type of pharmacy balance is required in all pharmacies?
The Class A Prescription Balance is the balance most commonly used by pharmacists; in fact, all pharmacies are required by law to have one in the prescription deparhnent.
What is the sensitivity requirement for a class A prescription balance?
Class A Prescription Balance— A balance that meets the tests for this type of balance has a sensitivity requirement of 6 mg or less with no load and with a load of 10 g on each pan.
What is the smallest readable amount of torsion balance?
According to Newton's report, the sensitivity of torsion balances are 0.006g, and the smallest readable amount is 0.01g, whereas electronic balances can range from 0.01g to 0.002g.
What is a class B balance?
The Class B balance is optional equipment in the pharmacy, which is used to weigh loads of more than 648 mg, and must be conspicuously marked “Class B.”. Beside this, what type of prescription balance is required in each pharmacy? The Class A Prescription Balance is the balance most commonly used by pharmacists; in fact, ...
What is a Class 3 prescription balance?
Also to know is, what type of balance is a Class 3 prescription balance and a counterbalance? The Class III Prescription Balance is a 2 pan torsion type balance which utilizes both internal and external weights. It requires the use of external weights for measurements exceeding 1 g.
