The Exchange Test Method
LABORATORY TEST METHOD NO. H-6: CORROSION RESISTANCE OF UMBRELLAS
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PURPOSE:
To determine resistance to corrosion formation on umbrella ribs and spreaders made of steel,brass,chromium or other metals.
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PRINCIPLE:
Umbrella is subjected to water and humidity under controlled conditions of time and temperature.
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APPARATUS AND MATERIALS:
- 3.1 Launderometer
- 3.2 Tap water
- 3.3 Spray bottle or sink spray attachment
- 3.4 Timer
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PROCEDURE:
- 4.1 Fill launderometer with 38°C (100°F) water and close lid.
- 4.2 Open umbrellas and spray water thoroughly around ribs, spreaders, and complete underside. Close umbrella and and place on top rack of launderometer, close lid.
- 4.3 Set timer or make note of start time on paper.
- 4.4 After 72 hours remove specimens.
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EVALUATION:
Open specimens and visually check for any formation of corrosion on ribs or spreaders. Note any discoloration of fabric or plastic parts such as handle.
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REPORT
Report any corrosion, its location, and any discoloration of fabric or plastic parts such as handle.