Spray rating tester price in Bangladesh

Spray Rating Tester

  The Spray Rating Tester is a textile testing instrument used to evaluate the water resistance or water repellency of fabric surfaces. It measures how well a fabric can resist wetting when exposed to a controlled spray of water, helping assess its performance in rain or damp conditions.   Purpose of Spray Rating Tester - To assess surface wetting resistance of textiles. - Commonly used for outdoor clothing, rainwear, tents, and performance fabrics.   Working Principle of Spray Rating Tester - A fabric specimen is mounted at a 45° angle. - Water is sprayed from a standard nozzle for a specific time. - After spraying, the fabric is visually rated based on the appearance of water drops and wetting.   Key Components of Spray Rating Tester - Spray Nozzle: Delivers a consistent, standard water spray. - Funnel & Reservoir: Controls the flow and volume of water. - Specimen Holder: Positions the fabric at a 45° angle. - Spray Stand: Ensures accurate nozzle height and positioning.   Standards Used of Spray Rating Tester - AATCC 22 - ISO 4920 - BS EN 24920   Applications of Spray Rating Tester - Rainwear and water-resistant textiles. - Quality control in fabric finishing. - R&D for performance apparel.   Benefits of Spray Rating Tester:

1. Quick and Simple Evaluation - Offers a fast way to assess fabric water repellency without complex setup.
2. Standardized Testing- Complies with AATCC 22 and ISO 4920, ensuring globally accepted results.
3. Cost-Effective- Low maintenance and no power requirement make it economical for routine lab use.

 

4. Improves Fabric Performance - Helps manufacturers develop or improve water-resistant textiles.
5. Non-Destructive Test - Does not damage the fabric, allowing for additional tests on the same sample.
6. Visual Grading- Easy to interpret using a standard spray rating chart (0 to 100 scale).
7. Supports Quality Control - Detects finish degradation or variation in water-repellent treatments.
8. Portable and Compact- Lightweight design allows easy use in various lab or field settings.

  Features of Spray Rating Tester:

1. Standardized Spray Nozzle - Delivers consistent water spray per AATCC and ISO specifications.
2. 45° Specimen Mounting Angle - Ensures uniform test setup for accurate and repeatable results.
3. Stainless Steel or Aluminum Frame - Corrosion-resistant and durable for long-term use with water exposure.

 

4. Water Reservoir and Funnel System - Provides precise water volume (usually 250 ml) for each test.
5. Graduated Spray Stand- Fixed height (150 mm above specimen) for controlled spray impact.
6. Detachable Specimen Holder- Easy loading and removal of fabric samples.
7. Compact and Lightweight Design - Portable and convenient for both lab and field testing.
8. No Electricity Required - Fully manual operation increases reliability and reduces operating costs.

  How to Use Spray Rating Tester:

1. Prepare the Sample - Cut fabric to standard size (usually 180 × 180 mm). - Condition the sample if required (21°C, 65% RH for 24 hours).
2. Mount the Fabric - Place the fabric on the specimen holder at a 45° angle.
3. Fill the Reservoir - Pour 250 ml of distilled water into the upper funnel.

 

4. Start the Test - Release the water through the nozzle; it sprays over the fabric for about 25–30 seconds.
5. Inspect the Fabric - After spraying, visually assess the water beading or penetration on the surface.
6. Rate the Sample - Compare the fabric’s wetting pattern with the standard spray rating chart: - 100 = No sticking/wetting - 90–50 = Partial wetting - 0 = Complete wetting
7. Record the Rating - Document the spray rating for quality control or reporting.

  Spray Rating Tester, Water Repellency Tester Spray Reting Tester [Scope of application]: Used for the determination of moisture resistance (wetting grade) of various fabrics which have been or have not been treated with water resistance or water repellency. [related standards]: GB/T4745 ISO4920 AATCC22 JISL1092 etc. [technical parameters]: 1. Glass funnel:150 x 150 (capacity 500ml) 2. Specimen placement angle:The level is 45 degrees. 3. Distance from nozzle to sample center:150mm 4. Specimen diameter:Ф150mm 5. Size of water receiving pan:500×400×30mm 6. Matching measuring cups:500ml 7, size 500 x 400 x 500mm 8. Instrument weight:5Kg