DowIcon_Default_EventsAsset 105 chart_icon form-checkmark form-radio__bullet cog icon profile-icon-header profile-locked-icon-header cart-icon-header region-icon-header nav_call home_sds homepage_hero_new--rollover list-bullet nav-close nav-close nav-hamburger nav-right-arrow--mobile nav_brochures nav_call nav_cart nav_case_studies nav_check_mark nav_close_x nav_common_questions nav_distributor nav_driving_directions nav_exclamation_point nav_external_links nav_find_formulations nav_find_products nav_info nav_learn_how_to_use nav_literature nav_lock nav_map nav_media_center nav_pdf nav_quick_checkout nav_read_latest_news nav_sample nav_selection_guides nav_tooltip nav_white_papers noav-icon-safe-handling-18x18 pdp-add_part_number pdp-arrow--left pdp-arrow--right pdp-box Funnel pdp-list_collapse pdp-list_expand Vector Smart Object12 Vector Smart Object12 pdp-shopping_cart social_facebook social_google social_linkedin social_pinterest social_rss social_twitter social_youtube utility-search utility-tooltip voc_icon
[{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"BR","default":"pt-br"},{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"JP","default":"ja-jp"},{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"CN","default":"zh-cn"},{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"US","default":"en-us"},{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"ES","default":"es-es"},{"values":[{"value":"Português-Portugués","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japonés","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chino","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English-Inglés","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Coreano","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"KR","default":"ko-kr"}]
true

Choosing a Coolant Concentration

Your Coolant Concentration Can Help Optimize Performance.

Selecting the correct coolant concentration can be challenging. To help reduce confusion, we’ve prepared simple guidelines for NORKOOL™ and AMBITROL™ Industrial Coolants.

Minimum and maximum concentration
NORKOOL and AMBITROL have established minimum and maximum concentrations to help optimize performance.

Minimum concentration is important to reduce biological contamination, which can be very difficult to remove once introduced. Low concentrations can additionally dilute corrosion inhibitors and limit adequate protection of steel surfaces. At the same time, high coolant concentration can increase viscosity and lead to lower heat transfer efficiency and freeze protection.
To avoid these challenges, Dow recommends a minimum concentration of 30% and maximum concentration of 50% when using NORKOOL and AMBITROL.

Concentration by geography
Glycol concentration is largely dependent on geography. For example, lower concentrations are possible in warmer climates since less freeze protection is needed. The ideal concentration is as lean as local climate will permit, while within recommended concentration levels from the manufacturer.
 

Contact us for help to select the proper concentration based on your system and to learn more about our products.

Geography

Recommended NORKOOL and AMBITROL Concentration

Canada and Northern U.S.

50%

Midwest U.S.

40%

Southern U.S.

30%


Resources