Textile UV Testing Protocol
STEP 1 - Fabric Sampling
Standards: ASTM E122 and D2905
Sample each lot, shipment or prduction run.
Primary Sampling Unit = bolts of Fabric or cartons of garments
Lab Sampling Unit = one yard of fabric or one garment
STEP 2 - Simulated Use Exposures
Standards: ASTM D6544
Simulate treatment over 2 years of normal wear
Laundering: AATCC 135 - 40 cycles
Exposure to UV: AATCC 16E - 100
hours / AATCC fading units(AFU)
Exposure to Chlorinated water(swimsuit fabrics)
STEP 3 - UV Transmittance Testing
Standard: AATCC 183 - 1998
UPF, UVA & UVB transmittance, and UVA & UVB blockage
STEP 4 - Labeling
Standard: ASTM D6603
Required Labeling Elements
classification category, either Good UV Protection,
Very Good UV Protection, or Excellent UV Protection,
statement that the UV-protective textile product has
been labeled according to this ASTM standard guide.
Optional Labeling Elements
percent UV-B and UV-A blocked value or percent UV-block value,
statement that the UV-protection value indicates the
lowest amount of protection that can be expected during the life
of the product.
statement that the product reduces exposure to harmful
UV-A nad UV-B rays.
statement that no textile product provides 100%
protection from UV radiation.