Quick, Easy, Accurate and Independent Antifreeze Testing
According to NFPA 25, antifreeze solution is to be tested at least annually, before the onset of freezing weather. This is to ensure the antifreeze solution is at a concentration that is safe and effective.
According to previous edition of NFPA 25 (e.g. 2017, 2020), listed antifreeze solutions were to be required for all systems after September 30th 2022. However, according to the current, 2023 edition of NFPA 25, existing (i.e. currently installed in a system) legacy solutions are still permitted to remain in systems provided the concentration of propylene glycol or glycerin is at or below 30% and 38%, resprectively. That legacy solution only needs to be replaced with a listed alternative, if available*, once it is drained (i.e. removed from the system) for any reason.
*if not available (i.e. no listed product meets your needs), you would have to look at alternative means of freeze protection (e.g. dry sprinklers, dry systems, heat tracing, etc.)
Why test your antifreeze sample with Dyne Fire Protection Labs?
- free antifreeze sampling kit
- free shipping within the contiguous United States (limited free 1-way shipping to Alaska, Hawaii, Puerto Rico, and Canada, inquire for details)
- test reports in 5-business days guaranteed
- 24 hour turn-around available
- comprehensive reports
- tank tags
- online access to results and forms
- immediate communication with our chemists or support staff
Antifreeze is typically placed into wet piping sprinkler systems to prevent freezing. According to National Fire Protection Association (NFPA) 25 5.3.4(2) (a) and 5.3.4(2) (b), "test samples shall be taken at the top of each system and at the bottom of each system as follows:
(a) If the most remote portion of the system is not near the top or the bottom of the system, an additional sample shall be taken at the most remote portion.
(b) If the connection to the water supply piping is not near the top or the bottom of the system, an additional sample shall be taken at the connection to the water supply."
Dyne can help you meet the antifreeze testing requirements as outlined in NFPA 25 Section 5.3.4. When the antifreeze type is not known, Dyne can help verify the type including whether or not it is listed. Note that contamination, extreme dilution, and mixing of antifreeze types can make accurate determination difficult in some cases. Samples that cannot reliably be determined to be one of the accepted antifreeze solutions will need to be replaced.
Antifreeze samples that fail are typically caused by one of the following issues:
- antifreeze solution contains an antifreeze liquid that isn’t allowed by NFPA 25
- solution is mixed too rich
- solution is mixed too lean
- solution is a combination of possible antifreeze liquids
- listed antifreeze does not match product composition
To prevent potential risks, an antifreeze solution that fails should cause the system to be flushed and replaced.
Limit your liability and be sure that your antifreeze solution systems will not freeze by sending them to an independent laboratory for complete testing.
For more information on antifreeze testing see the links below:
