ASTM D 951 Standard Test Method for Water Resistance of Shipping Containers by Spray Method
The scope of ASTM D 951 shipping container testing is to determine how well a container resists water. This standard can also be used to evaluate the ability of a container to resist deterioration caused by water.
This particular packaging test is just one of several shipping container tests. It is typically combined with other tests including drop testing, inclined impact testing, vibration testing and compression testing. The overall goal is to ensure that contents of the shipping container effectively protect its contents during the rigors of transportation.
The test requires at least three containers. The containers must be closed and sealed as they normally would be. The containers must also be similar to the actual containers that will be used. The standard does not permit the testing of a “golden unit”. Some of the testing will require the shipping containers to be empty. Other tests will require the containers to have the contents they are made to ship.
To complete the ASTMD 951 package test, the test lab needs to have the following equipment and capabilities. These are directly from the ASTM D951 test standard:
- Test Room. A test room or cabinet shall be of water-resistant construction, insulated and heated when necessary so that proper temperature control can be maintained. The bottom shall be covered with a false floor of slats and have an outlet drain.
- Sprays—Spray nozzles shall be of such size and so spaced that the specified intensity of spray falls uniformly distributed over the floor area. The spray nozzles shall be so located that the droplets are falling from gravitational force only when they strike the specimens.
- Flow Control Valves—Flow control valves, to control the intensity of the spray, are required.
- Circulating System—A circulating system shall, where used, consist of a fine-mesh strainer, pump, relief by-pass, gages, and pressure regulating valve, together with the necessary piping between the flow control valves, spray nozzles, and water reservoir.
- Reservoir—A reservoir for storage and conditioning of the spray water shall, where used, be equipped with an overflow to a sewer and with a drain to facilitate changing the water at the start of each test. Make-up water, regulated by a float control, shall also discharge into this tank.
- Water Temperature Control—A thermostatically controlled means of heating for maintaining the supply water at the desired temperature is required.
- Conditioning Apparatus—Adequate facilities shall be provided for conditioning test specimens at proper humidity and temperature prior to test.
Keystone Package Testing is a leader in testing to the ASTM D951 test standard. With significant experience, we not only provide testing, but we also assist with developing the test plan and identify potential solutions when packages do not meet the requirements. With four shakers and numerous temperature chambers, we offer short lead times on package testing scheduling. Contact us to see firsthand why so many companies partner with Keystone Package Testing to meet their transit testing needs.