Most pharmacists will make their weight measurements on a Class III prescription balance. In fact, pharmacies are required by law to have such a balance in their facility.
What class of balance do pharmacists use for compounding?
In USP Chapter <1176>, “Prescription Balances and Volumetric Apparatus, a prescription balance is defined as “a scale or balance adapted to weighing medicinal and other substances required in prescriptions or in other pharmaceutical compounding.” 13 A “Class A” (typically referred to as class III) 14 balance should be ...
What is a Class B prescription balance?
These balances are classified as either “Class A” or “Class B.” The Class A balance is used for weighing loads from 120 mg to 120 g. ... 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.”
How do you use a Class 3 prescription balance?
- Arrest the balance by turning the arrest knob. ...
- Set the internal weights to zero. ...
- Level the balance (left to right) by adjusting the leveling screw feet. ...
- Place one weigh boat on each weighing pan.
When would you use a Class A torsion balance quizlet?
When using a Class A Torsion balance to weigh Acetaminophen powder: The weight goes on the right pan and the powder goes on the left pan. The AWP for a drug is $33.50 with a 15% discount from the wholesaler.
What is 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 a class C balance?
Balance Weights: A proper set ofmet c weights (Class C or better) is essential for prescription compounding. These sets usually cantain cylindrical weights ranging from 1-50 g and fractional weights of 10-500 mg .
What is the accuracy of analytical balance?
An analytical balance will measure the accuracy of 0.0001 to 0.00001g . If extream accuracy is not important a top-loading balance will work just fine in measuring the accuracy of 0.001g.
What is the weight limit of a Class A balance?
Class A prescription balance
this balance, the pharmacist should not weigh less than 120 milligrams of material (i.e., a 5% error in a weighing of 120 milligrams = 6 milligrams). Most commercially available Class A balances have a maximum capacity of 120 grams .
Which of the following medications must be refrigerated?
A range of medicines need to be refrigerated. These include insulins, antibiotic liquids, injections, eye drops and some creams . These medicines must be stored between 2oC and 8oC.
What are the uses of analytical balance?
Analytical balances are precision measuring instruments used in quantitative chemical analysis , to determine the mass of solid objects, liquids, powders and granular substances.
What is capacity of analytical balance?
An analytical or semi analytical balance is a form of scale that measures mass to a high degree of precision. It has a weighing capacity in the range of 54-520 g and a readability of 0.005 mg – 0.1 mg. Analytical balance sensitivity requires it to be protected by a draft shield or an enclosure.
What is the sensitivity requirement of a Class III torsion balance?
The Class III Balance has a sensitivity requirement of 6 mg , meaning that as much as 6 mg could be added to or removed from the pan before the balance marker will move 1 division. Most have a maximum capacity of 120 g and bear a statement to that effect.
What type of alcohol is used to clean a laminar airflow hood?
Sterile gloves are worn in addition to scrubbing. Wear lint-free clothing or clothing covers, head and facial hair covers, and a mask. Clean all flat surfaces of the hood with 70% isopropyl alcohol , or other antibacterial scrub such as benzalkonium chloride solution, working from top to bottom, then from back to front.
What is the system called that generate electronic records of medication administration?
Unsourced material may be challenged and removed. A Medication Administration Record (MAR, or eMAR for electronic versions), commonly referred to as a drug chart , is the report that serves as a legal record of the drugs administered to a patient at a facility by a health care professional.
