VIT 160 - Spray Rating Tester

Spray Rating Tester, to determine the surface wetting resistance of fabrics, which may or may not have been given a water-resistant or water-repellent finish.
Spray rating tester consists of a metal framework allowing distilled water to be sprayed through a nozzle onto a test specimen at 45° and 150mm below the nozzle.

Optional order
Standard Photographic for AATCC 22

ISO 4920, AATCC 22, BS EN 24920, BS 3702, M/S P23/P133, NEXT 23

12 Kg

220 x 260 x 550mm (L x W x H)

Spray Rating Test Method

Test piece preparation:

Test piece (Size: 18CM*18CM)

Test procedure:

  • As AATCC 22 required, we put the test piece to the humidifying treatment more than 4 hours, which under the environment of standard temperature of21±1℃and relative humility of 65±2℃.
  • After the humidifying treatment, the test piece clamped by the holder on the support at a 45°, and we pure 50ml water into the funnel rapidly steadily in order to keep drenching constantly. When the water is used up, we can observe the test piece.
  • According to description of spray rating to assess its grade of wet but without the intergrade.

Spray rating:

Grade 1: All of the surface is wet.

Grade 2: Half of the surface is wet. It usually means the sum of small and disconnected areas of wet.

Grade3: Only small and disconnected areas of wet on the surface.

Grade4: The surface appears water drop but not wet.

Grade5: The surface is neither wet nor water drop.

Test result:

The test result should include the following message:

  1. The illustration of the test procedure according to the standard.
  2. Atmospheric conditions.
  3. Water temperature.
  4. Spray rating of each test piece.
  5. Experimental date.
  • Nozzle 19 holes of Dia. 0.9mm
  • Angle of holder 45°
  • Holder Dia. 150mm, 150mm below the nozzle
  • Measuring Cup 250m