Quick, Easy, Accurate and Independent Sprinkler Testing

NFPA 25 requires building owners to have a sample of the installed sprinklers tested by a recognized testing lab.  Dyne Fire Protection Labs offers free test kits and 5-business day turnaround on test results for an easy and convenient way to ensure that your sprinklers are staying in compliance.

Dyne Offers

  • Free standard size sprinkler test kits

    Standard Sprinkler Kits include free shipping within the continental (lower 48) United States. A kit contains four sprinkler labeling bands, foam packing material with room for four standard size sprinklers (larger sprinklers will need to be packed by the customer), and a return UPS label
  • Dry sprinkler test kits 

    Dry Sprinkler Kits contain packaging, a sprinkler labeling band, and paperwork for 1 dry sprinkler. Adjustable sized kits available. Shipping is paid by Dyne to customers within the continental (lower 48) United States, customer is responsible for the shipping cost back to Dyne (any return shipping charged to Dyne will be added to your invoice)

    Small: holds one (1) dry sprinkler up to 20", $10 each
    Large: holds one (1) dry sprinkler up to 21" to 42", $12 each

  • Test reports in 5-business days guaranteed
  • Rush 1-business day turnaround available, please call ahead
  • Online return form (print also available)
  • Comprehensive reports
  • Laminated Dyne Sprinkler Test Tags
  • Link to pictures of sprinklers tested
  • Online access to results and forms
  • Immediate communication with testing lab staff


State-of-the-art Sprinkler Test Tunnel
What to Test

NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water Based Systems. 2017 Edition

NFPA 25 section states a representative sample of sprinklers for testing shall consist of a minimum of not less than four sprinklers or 1 percent of the number of sprinklers per individual sprinkler sample, whichever is greater. Furthermore, some guidance on what defines a sprinkler sample is given in the Annex of NFPA 25 where A. states “Within an environment, similar sidewall, upright, and pendent sprinklers produced by the same manufacturer could be considered part of the same sample, but additional sprinklers would be included within the sample if produced by different manufacturers.”  

However, NFPA 25 leaves determining sampling environments to the building owner. For example, let’s look at a 20 story building with 200 of the same type of sprinkler on each floor. The building owner could define your sample environment by floor in a 20 story building or they could define the whole building as your environment. In the first example, you would be required to take 4 sprinklers from each floor or 80 sprinklers in total. In the 2nd example, you would be required to take 1% of the whole building or just 40 sprinklers in total. However, consider what NFPA 25 says about sprinklers failing to meet performance requirements: “Where one sprinkler within a representative sample fails to meet the test requirements, all sprinklers within the area represented by that samples should be replaced.” In the first example, if they had one sprinkler fail on the 1st floor, they would only need to replace that floor’s sprinklers since each floor was represented by a different sampling. In the 2nd example, one sprinkler failure on the 1st floor would require sprinkler replacement for the whole building. A discussion between the building owner and contract should be had to outline the benefits and draw backs of different sampling sizes.

NFPA 25 Section 5.3.1 Testing Sprinklers, makes the following recommendations for when to either test or replace sprinklers installed in systems.

Sprinkler Detail

First-Time Test Requirement

Subsequent Test Requirement


After 50 Years in service

Every 10 Years and at 75 years in service and every 5 years thereafter

Manufactured prior to 1920

Must Be Replaced

Must Be Replaced

Manufactured Using Fast-Response Elements

After 20 Years in service

Every 10 Years

Solder type sprinklers with a temperature classification of extra high (325° F, 163° C) or greater that are exposed to semi continuous to continuous maximum allowable ambient temperature conditions

After 5 Years in service

Every 5 Years

Dry Sprinklers

After 10 Years in service

Every 10 years

Sprinklers exposed to harsh environments, including corrosive atmospheres and corrosive water supplies

After 5 Years in Service

Every 5 Years

Dyne takes pictures of the top, bottom, and both sides of the sprinkler before testing. Dyne then subjects the fire sprinkler to a plunge oven test to determine the response time. This test is designed to ensure the sprinkler will release in a specified time when exposed to a specified temperature. As required by Underwriters Laboratory 199, International Standards Organization  6182-1, and Factory Mutual Class Number 2000, the Response Time Index (RTI) value (meter/second)1/2 between 80 and 350 is required for a standard sprinkler while a maximum value of 50 is required for a fast response sprinkler. Dyne takes a picture of the waterway after the plunge oven test. Pictures of the sprinklers are available through an online link that is active for 90 days following testing.

If one of the sprinklers in a system is determined to fail the test requirements, all the sprinklers will need to be replaced.