ASTM D951 Water Resistance of Shipping Containers by Spray Method

ASTM D951 shipping container testing determines how well a container resists water. As an ISTA and ISO 17025 certified lab, we realize the importance of water resistance testing. Meeting the ASTM D951 requirements can be difficult. We understand the challenges and guide companies through the process.

We are in constant communication throughout the test process. Keystone has a reputation of helping customers achieve their package certifications. Keystone also provides the peace of mind that all of your needs will be met. Our competitive pricing can offer quick and accurate test results.

Request a quote to see why so many companies partner with Keystone Package Testing. Have a question about water resistance testing? Contact us and we will determine the best course of action.

Summary of ASTM D951 Water Resistance Testing Information

This standard can 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.

Scope of ASTM D951 Spray Method Testing

To complete the ASTM D951 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.

Expert ASTM D951 Water Resistance Package Testing

Keystone has a full lab of test equipment which permits us to provide short lead times on scheduling. We can accommodate flexible and rigid packages of all sizes, including large pallets. Our team strives to give our customers more time and energy on product development instead of testing.

Request a quote to learn first hand why so many companies partner with Keystone to achieve their spray method certification needs.


For more referenced ASTM standards and similar testing, please follow the links below: