ASTM D5430 4-POINT SYSTEM

N.B.:
1. No running yard shall be penalized more than 4 points for warp and weft defects.
2. For Fabric width exceeding 64"-66", Maximum penalty points can be increased above 4 per linear yard in proportion to the width.
3. Defects appearing within one inch of either edge shall be disregarded.
4. Any hole other than a pin hole shall be considered a major defect and assigned 4 points for penalty.

Grading:

1. Linear Yard basis:
Acceptable tolerance=20 points per 100 linear yards

2. Square yard basis:
Points/100 sq. yd= Total Points scored in the bulk X 100 X 36
Width of the roll(inch) X total yds inspected

Acceptable tolerance:
a. 28 points per 100 sq. yd. for each individual roll.
b. 20 points per 100 sq.yd. for average of rolls inspected.
1st Quality: Penalty points not exceed the acceptable tolerance.
2nd Quality: Penalty points exceed the acceptable tolerance.