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

Spectrophotometer testing

UPF, UVA & UVB transmittance, and UVA & UVB blockage

STEP 4 - Labeling

Standard: ASTM D6603

Required Labeling Elements

UPF value,

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.