What is compounding in medicine?
How to reduce particle size?
What is the margin of error for a class A prescription?
How long can insulin be stored in the refrigerator?
Can a graduated cylinder measure volume less than 100ml?
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What is the weight 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?
A Class III balance (formerly known as a class A prescription balance) is a two pan balance that can weigh 120g or less with a sensitivity requirement (SR) of 6mg.
What is the minimum sensitivity reading on a Class A prescription balance?
The balances must meet all specific standards as set by the National Bureau of Standards at all times. The most common class A and class III mechanical prescription balances have a capacity of 60–120 g and a sensitivity requirement of 5–10 mg.
How is balance sensitivity calculated?
Count the number of graph squares that cause the smallest detectable motion. Multiply that number of squares times the calculated mass of a single square to determine the balance's sensitivity.
What is 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. The Class A balance should be used for all the weighing operations required in prescription compounding.
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.
What is the common sensitivity of a balance?
A balance is said to be sensitive when it can register small differences in weight. The balance beam is most sensitive when its center of gravity lies slightly below its rotation axis.
What does 0.1 mg readability mean?
“d” for digit; digitus – lat. for finger (counting and calculating with the fingers is therefore a digital process) If you have a readability interval of d=0.0001g, it means that the smallest step you can read on it is 0.0001g (or 0.1mg) and increasing or decreasing the weight applied will change.
What is sensitivity 1w 1m?
Sensitivity: 87dB (1w/1m) This means that speaker produces a level of 87dB when driven with 1 watt of power and measured 1 meter in front.
What does 70% sensitivity mean?
Positive and Negative Predictive Value An NPV of 70% would mean that 7 in 10 negative results would accurately represent the absence of the disease (“true negatives”) and the other three results would represent “false negatives,” meaning the person had the disease but the test missed diagnosing it.
What does a sensitivity of 100% mean?
Sensitivity is the proportion of people WITH Disease X that have a POSITIVE blood test. A test that is 100% sensitive means all diseased individuals are correctly identified as diseased i.e. there are no false negatives.
What is the threshold of sensitivity?
Threshold sensitivity: the minimum write beam intensity required to record an image on the read-out beam. For unambiguous specification, other parameters (e.g. resolution) should be specified. Obviously, it only applies to OASLMs. Frame time: the time required to replace an image by the next one on the read-out beam.
What is maximum sensitivity of a 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 the common sensitivity of a balance?
A balance is said to be sensitive when it can register small differences in weight. The balance beam is most sensitive when its center of gravity lies slightly below its rotation axis.
What is the minimum weight class III balance is calibrated to?
0.01 g to 0.001 gClass 3 - Appropriate for calibrating high-precision top loading balances with a readability as low as 0.01 g to 0.001 g.
What is beam balance for Class 3?
A beam balance is a device used to measure mass. An object is put into a disk on one side that hangs from one end of a bar. It is balanced with weights at the other end. It has a lever at the middle just for support with two equal arms and a pan suspended from each arm at the end of the beam by equal length of strings.
What is compounding in medicine?
Compounding is the on demand formulation of a drug preparation according to a physician's prescription for
How to reduce particle size?
Reducing particle size by grinding a powder with a liquid in which it is insoluble.
What is the margin of error for a class A prescription?
For a medication to be within the 5% margin of error permitted by the USP, the minimum amount of drug that can be weighed on a class A prescription balance is
How long can insulin be stored in the refrigerator?
However, an open insulin is stored in the pharmacy and a patient's home in the refrigerator because it is only stable for 28 days once it is opened.
Can a graduated cylinder measure volume less than 100ml?
A 100ml graduated cylinder cannot accurately measure volume less than
What is compounding in medicine?
Compounding is the on demand formulation of a drug preparation according to a physician's prescription for
How to reduce particle size?
Reducing particle size by grinding a powder with a liquid in which it is insoluble.
What is the margin of error for a class A prescription?
For a medication to be within the 5% margin of error permitted by the USP, the minimum amount of drug that can be weighed on a class A prescription balance is
How long can insulin be stored in the refrigerator?
However, an open insulin is stored in the pharmacy and a patient's home in the refrigerator because it is only stable for 28 days once it is opened.
Can a graduated cylinder measure volume less than 100ml?
A 100ml graduated cylinder cannot accurately measure volume less than