Assay Calculation
While doing any assay calculation the result of assay is expressed upto one decimal place more than the significant figures stated and then the results are rounded up or down as follows.
If the last figure calculated is 5 to 9, the preceding figure is increased by 1 & if it is 4 or less, the preceding figure is left unchanged.
To find out significant figures for particular value refer to its specification limit, e.g. if limit is 99.00 to 102.00 then two decimals from the decimal point are significant. If the limit is 98 to 101 then significant figures are without decimal point.
Water analysis / Slit Air Sampling / Bacterial Count / fungal Count / Settle Plate / Swab: Is expressed as a whole number.
Microbial Assay: Any microbial assay is expressed either in terms of percentage / microgram / milligram.
NOTE: Area of standard & sample in Thermo Separation series HPLC system is not expressed in decimal place.
When unprinted packaging material like containers, bottles are issued, it is expressed in terms of numbers.
Printed / unprinted foil when issued is expressed in terms of kg.
To find out significant figures for particular value refer to its specification limit, e.g. if limit is 99.00 to 102.00 then two decimals from the decimal point are significant. If the limit is 98 to 101 then significant figures are without decimal point.
Water analysis / Slit Air Sampling / Bacterial Count / fungal Count / Settle Plate / Swab: Is expressed as a whole number.
Microbial Assay: Any microbial assay is expressed either in terms of percentage / microgram / milligram.
Loss On Drying
The result of loss on drying is expressed in terms of percentage upto second decimal place and the results are rounded up or down as mentioned in assay calculation.Sulphated Ash
The result of sulphated ash is expressed in terms of percentage upto fourth decimal place and the results are rounded up or down as mentioned in assay calculation.Loss On Ignition
The result of loss on ignition is expressed in terms of percentage upto second decimal place and the results are rounded up or down as mentioned in assay calculation.HPLC Calculation
Area of standard & sample in Agilent series HPLC system is expressed up to the third decimal place, e.g. 237.293, 2.293 etc.NOTE: Area of standard & sample in Thermo Separation series HPLC system is not expressed in decimal place.
Impurity
Any Impurity is expressed up to the third decimal place, e.g. 0.101, 0.500 etc.Absorbance measured on the Spectrophotometer
Absorbance is expressed up to the third decimal place, e.g. 0.101, 0.500 etc.Gas Chromatography
Area of standard & sample is expressed up to the fourth decimal place.Temperature & Humidity of Stability Ovens
Temperature & humidity of stability ovens is expressed upto one decimal place.Temperature & Humidity of Control Sample Room
Temperature & humidity of control sample room is expressed as the actual temperature displayed on the Thermometer, e.g. 22°C, 25°C, etc.Bin Cards
Bin Cards of Raw Material:
When material is received / issued in terms of kg, the quantity is expressed upto the third decimal place & when material is received / issued in terms of gm, the quantity is expressed upto the third decimal place.Bin Cards of Packing Material:
When printed packaging material like labels, cartons, leaflets, BOPP Tape, Corrugated boxes are issued, it is expressed in terms of numbers.When unprinted packaging material like containers, bottles are issued, it is expressed in terms of numbers.
Printed / unprinted foil when issued is expressed in terms of kg.
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