Knitted fabrics typically undergo the following physical property tests: density, yarn count, weight, yarn twist, yarn strength, fabric structure, fabric thickness, loop length, fabric cover factor, fabric shrinkage or warping rate, skewness, tensile strength, tear strength, seam slippage, seam strength, adhesive strength, single yarn strength, yarn linear density strength, snag resistance, crease recovery angle test, stiffness test, water repellency test, leak-proof properties, elasticity and resilience, breathability, water vapor permeability, flammability of general garments, flammability of children's evening wear, bursting strength, abrasion resistance test, and resistance to pilling, etc.
Colorfastness is also tested. Color fastness to soap washing (sample), color fastness to rubbing, color fastness to chlorine water, color fastness to non-chlorine bleach, color fastness to dry cleaning, color fastness to actual washing (garments, fabrics), color fastness to perspiration, color fastness to water, color fastness to light, color fastness to seawater, color fastness to saliva; Dimensional Stability: Dimensional stability for machine washing, hand washing, dry cleaning, and steam washing; Appearance After Wash: Appearance stability for machine washing, hand washing, and dry cleaning; Chemical Analysis: pH content, formaldehyde content, lead content, azo dye testing, heavy metal content testing, water absorption, moisture content, odor, mercerization effect of cotton, hot pressing, dry heat, storage sublimation, acid stains, alkali stains, water stains, phenolic yellowing, etc. (Fiber Content Analysis) Cotton, linen, wool (sheep, rabbit), silk, polyester, viscose, spandex, nylon, and down content, etc.
