1.0 SCOPE
This standard testing procedure is suitable for the determination of alcohol-soluble extractive value in Choorna/Kvatha Choorna.
2.0 PURPOSE
The purpose of the document is to establish a method for Alcohol soluble extractive value in Choorna/Kvatha Choorna.
3.0 RESPONSIBILITY
The expert and trained chemist are responsible for following this procedure. The technical manager is responsible for implementing this procedure.
4.0 REQUIREMENTS
4.1 Apparatus
4.1.1 Analytical balance
4.1.2 Shaker
4.1.3 Water bath
4.1.4 Hot Air Oven
4.2 Glassware
4.2.1 Conical stoppered Flask
4.2.2 Petri-dish
4.2.3 Funnel
4.2.4 Measuring cylinder
4.3 Reagent
4.3.1 Water, Ethanol(95%)
5.0 PROCEDURE
5.1 Weigh about 2.0g to 5.0 g of sample in the stoppered volumetric flask.
5.2 Add 100 ml of solvent to it.
5.3 Shake it for 06 hours continuously on the shaker.
5.4 Keep it still for 18 hours.
5.5 Filter it with Whatman filter paper (No.-1) in a previously dried dish.
5.6 Take 25 ml of solvent into a previously dried and weighed petri dish at 105°C for 30 min.
5.7 Now evaporate the solvent by keeping the Petri dish in the water bath.
5.8 Keep the petri-dish in the oven for drying at 105°C for 1 hr.
5.9 Remove the dish from the oven and place it in the desiccator for cooling.
5.10 Note down the dry weight of the petri-dish.
6.0 CALCULATION
[ (W3-W2 )/ W1 ] X100 X 100/25
Where,
W3=Weight of
dish+ sample weight (after drying), in g
W2=Weight of the empty dish, in g
W =Weight of sample in g
7.0 ATTACHMENTS
Appendix-1: Flow chart for alcohol soluble extractive in choorna/kavatha
8.0 REFERENCES
A.P.I. Part I, Vol-VIII; First Edition-2011.
You may like to read these links:
1. List of All SOPs and Documents for the Chemistry Laboratory
2. List of All SOPs and Documents for Quality Control
3. List of All SOPs and Documents For Quality Assurance Dept.
4. List of SOPs and Documents Required to Achieve NABL Accreditation
5. List of All SOPs and Documents for Laboratory Instruments and Equipment
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