DOW Annual System Testing

January 23, 2024

Requirements for Analysis

Dow offers complementary annual analysis for customers using >250 gallons of concentrated Dow heat transfer fluid. This includes the DOWTHERMTM, DOWFROSTTM, AMBITROLTM and NORKOOLTM product lines. Customers can submit a sample from each qualifying system on a yearly basis to confirm the fluid condition and whether it is suitable for continued use or adjustments need to be made. Exceptions may be made for systems experiencing issues. Analysis of non-Dow heat transfer fluids, or other systems which do not meet the above requirements, must be approved on a case-by-case basis by Dow Sales or TS&D before they may be submitted.

Sample Kit Requests

Sample kits are available for customers qualifying for analysis and can be requested by e-mailing and providing the following information:

Company Name:

Full Shipping Address:

Phone Number:

Contact Name:

Type of Kit (2-pack or 6-pack):

Quantity Requested:

Dow offers 2 sizes of sample kits. Customers can request either a 2-pack or a 6-pack kit. Each kit contains everything that is needed to test either 2 or 6 systems.


Testing Overview

The testing program is setup to provide a comprehensive overview of the fluid condition as well as provide recommendations for bringing a heat transfer fluid back to within Dow’s specification, if necessary. Completed samples kits can be returned to:


1712 Bldg – Thermal Fluids

3700 James Savage Rd.

Midland, MI 48642

It is recommended to obtain tracking information for all shipments. Once samples are received, they will be logged into the Dow database and placed in the testing queue. Typical turnaround time is between 5 to 10 business days. If a rush analysis is needed, please indicate the reason for rush analysis on the Sample Identification Sheet. Turnaround times for a rush analysis are usually between 3 to 5 business days. Once testing is completed, an e-mail will be sent to the account contacts with a customized fluid analysis report. For copies of historical reports, reach out to
Each submitted sample will be subjected to the same testing:

  • Appearance
    • Color (photo of fluid will be included on all reports)
    • Presence of sediment, cloudiness, oil, etc.
  • Concentration & Freeze Point
    • Glycol concentration and type (EG, PG, DEG, TEG)
    • Freeze Point
  • Chemical Properties
    • Fluid pH
    • Reserve Alkalinity
  • Corrosion Inhibitors
    • Phosphate, nitrite, TTZ, etc.
  • Contaminants, Corrosives & Scale Promoters
    • Chloride
    • Sulfate
    • Total Hardness
    • Metals (copper, iron, zinc, aluminum, tin, lead, etc.),
    • Degradation acids
    • Nitrate
    • MBT


How to interpret your Dow heat transfer fluid analysis report

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