DS(Shrinkage)
Autometic washing machine, required dryer/drying racks, required ballast, reagents, required water(hardness 0.7 mmol/L, Pressure 150 kpa, tem 20+/-5°C). Weighting balance,ruler/templete,marker/correction pen.Overlock sewing machine etc.
Receiving the sample from bulk/R&D with required information
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Cut 1/3 specimen at least 500x500mm from 1m/650mm,Single/double layer % sew 3/4 side by overlock
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Precondition & confirm conditioning/testing atmosphere-atleast 04 hours with ISO 139
(20±2°C Temp & 65±2% humidity)
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Mark the specimen by templet (350/03 Points) & marking reconfirm by measuring Scale
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Write ashort notes with referance no & walse/course indication
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Weight specimen a add sufficient ballast (total 2.0±0.1 kg)
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Make a liquid solution with std. reagent (77%/15.4 gm ECE, 20%/4gm sodium perborate & 3%/0.6gm TEAD), after mixing 14 days validity
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Technique establish for solution mixxing & sample place into the washing machine
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Select washing program as per requirement (5A program 40°C temp) & start the program
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After end the program, remove the specimen with loading cloth carefully & place into dryer (40°C to 80°C but delicate fabric 60°C)/vertically in linedry racks/horizontally in perforated flat bottom rack.
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conditioning atleast 4 hours as per ISO 139 (20±2°C Temp & 65±2% humidity)
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After conditoning, make a measurment & record it (avg. Of 3 points)
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Run 2nd/3rd wash sample dry same as 1st procedure also measure
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Result calculation within 0.5% & make a test report in mentioning method, machine type, sample description, washing, drying & assesment procedure, detergent, ballast, remark etc.
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