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Scientific and Production Products
Apparel testing

Our critical assurance apparel undergoes extensive testing to ensure that it provides the protection you need.

The following standard test methods are routinely used to characterize materials used in Scientific and Production Products apparel. They have been developed by independent testing organizations, such as the ASTM International, the Association of the Nonwoven Fabrics Industry (INDA), the American Association of Textile Chemists and Colorists (AATCC) and the Institute of Environmental Sciences and Technology (IEST), to simulate typical real-world physical challenges to the materials and exist as industry-recognized standards. (IST refers to INDA Standard Test.)

Weight

 Basis weight (ASTM D3776): determines the weight of the fabric structure.

Comfort

 Air permeability (ASTM D737 and IST 70.1): measures the flow of air through a nonimpervious material at a specific pressure differential. Indicates the material’s breathability and coolness during use.

 WVTR (ASTM E96 and IST 70.2): measures the rate of water vapor transmission (WVTR) through an impervious material.

 Handle-O-Meter (IST 90.3): measures the weight (in grams) necessary to push a material through a 1/4" slit. The lighter the weight needed, the more drapable the material.

Barrier

 Hydrostatic pressure (AATCC 127 and IST 80.4): measures the resistance of fabric to penetration by water under constantly increasing hydrostatic pressure.

 Water impact (AATCC 42 and IST 80.3): measures the resistance of fabrics to penetration by water spray impact. Indicates how the material will perform when fluids fall or splash onto the fabric.

 Mason jar test (IST 80.5): measures the resistance of fabrics to penetration by saline solution under a constant pressure.

 Alcohol repellency (IST 80.8): measures the resistance of fabrics to penetration by aqueous isopropyl alcohol solutions. Indicates how the material will perform when alcohol, blood or body fat comes in contact with the fabric.

Strength

 Mullen burst (ASTM D3786 and IST 30.1): measures the resistance of fabrics to puncture under increasing pressure. Indicates the material’s resistance to blunt pressure.

 Elmendorf tear (ASTM D5734 and IST 100.1): measures the resistance of fabric to tear under a controlled force. Indicates the material’s resistance to tearing when there is an initial tear in the fabric.

 Grab tensile (D5034 and IST 110.1): measures the resistance of fabric to break under an increasing pulling stress. Indicates the material’s resistance to breaking when there is no initial tear in the fabric.

 Trapezoid tear (ASTM 5733 and IST 100.2): determines the load required to propagate a tear.

Particulate

 Helmke Drum (ASTM F50-83): determines the cleanliness of garments by measuring the particles emitted per minute when garments are rotated in a drum. The smaller the count, the cleaner the garment.

 Gelbo flex (IST 160.1): measures the number of lint particles removed from a fabric during repeated flexing. Indicates the material’s comfort level.
 
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