NVIDIA DSX Ready Coolants: 9 Qualified Suppliers (Oct 2026)

Quick answer

NVIDIA DSX Ready coolants come from 9 suppliers that NVIDIA has named as coolant partners: Arteco (ZITREC EC), BASF, BEYOND by Valvoline, Castrol, Dow, Dynalene, Ecolab, PFX Group and Shell. Products publicly named as DSX Ready by their makers include BASF GLYTHERMIN DC PG25, Shell DLC Fluid, Dow DOWFROST LC and Ecolab's PG coolant; Arteco names ZITREC EC 20 and Castrol describes ON PG25/PG25T as NVIDIA-validated. For the other suppliers the qualified product isn't published. NVIDIA's coolant category covers PG25 fluids for single-phase cold-plate loops. Confirm current status with NVIDIA and the supplier.

Key takeaways

Most qualified direct-to-chip fluids are PG25.
Qualification wording differs: "DSX Ready", "validated", "qualified".
Some suppliers' specific qualified products are not published.

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Qualified and listed coolants

Supplier	Product(s)	Base	Publicly reported qualification	Profile
Arteco	ZITREC EC line (launched 29 Apr 2025)	MPG / MEG / water-based OAT	Arteco states ZITREC EC 20 is NVIDIA-qualified	profile
BASF	GLYTHERMIN data-center platform (launched 8 Oct 2026)	Propylene glycol (PG25)	GLYTHERMIN DC PG25 qualified as an NVIDIA DSX Ready coolant (secondary-loop, single-phase cold-plate)	profile
Shell	Shell DLC Fluid S3 (PG25, meets OCP PG25 specification, freeze protection −10 °C, green fluorescent dye, free of 2-EHA, borate and silicate); single-phase immersion cooling fluids	PG25 (DLC); hydrocarbon-based (immersion)	Shell DLC Fluid S3 reported as NVIDIA DSX Ready (Oct 2026); immersion fluids Intel Data Center Certified for Immersion Cooling (4th/5th Gen Xeon)	profile
Castrol	Castrol ON PG25 (OAT) and PG25T (IAT), pre-diluted direct-to-chip fluids	Propylene glycol (PG25)	Castrol ON PG25 and PG25T announced as validated for NVIDIA AI infrastructure (18 Aug 2026); Castrol CORE Cooling Solutions named by NVIDIA among DSX Ready coolant partners (Oct 2026)	profile
Valvoline Global (Beyond by Valvoline)	"Beyond by Valvoline" platform (launched 11 Jun 2026)	PG25 (DLC); dielectric (immersion)	BEYOND by Valvoline named by NVIDIA among DSX Ready coolant partners (Oct 2026); the specific qualified product is not published	profile
Dow	DOWFROST LC 25	Propylene glycol (PG25)	Dow has publicly stated DOWFROST LC qualified as NVIDIA DSX Ready	profile
Ecolab	PG coolant (name not published)	Propylene glycol	Ecolab states its PG coolant is qualified NVIDIA DSX Ready	profile
Dynalene	Dynalene PG-D25, a PG25 direct-to-chip fluid listed on the OCP Marketplace	Propylene glycol (PG25)	Named by NVIDIA among DSX Ready coolant partners (Oct 2026); the specific qualified product is not published	profile
PFX Group (Solutherm)	SOLUTHERM OAT PG 25	Propylene glycol (PG25, OAT)	Listed on the OCP Marketplace; named among NVIDIA DSX Ready coolant partners	profile
Chemours	Opteon 2P50, a developmental two-phase immersion dielectric fluid (HFO-based)	Dielectric (two-phase immersion)	Chemours reports qualification work with Samsung SSDs and 2CRSi servers	profile
Engineered Fluids	ElectroCool single-phase immersion dielectric coolants	Dielectric (single-phase immersion)	Not published	profile
Submer	SmartCoolant synthetic single-phase immersion fluid (alongside immersion systems)	Synthetic dielectric (single-phase immersion)	Not published	profile

"Not published" means we couldn't find a public source. Rows reflect public statements as of October 2026.

Direct-to-chip cooling: the PG25 or water-based coolant stays in a closed technology loop; the CDU passes heat to the facility water loop.

What a qualification means

A qualification indicates that the fluid passed a program's tests (for example corrosion, thermal stability, material compatibility, purity). It doesn't guarantee compatibility with every cold plate or CDU. Check vendor approvals and maintenance limits. See CDU maintenance.

Compare them

Use the comparator tool to filter by base and qualification, or browse the supplier directory. Background: what is PG25?.

Qualification vs specification vs approval

Term	Who issues it	What it tells you
Specification (e.g. OCP PG25 base spec)	Standards body or community	Baseline fluid requirements
Qualification (e.g. NVIDIA DSX Ready)	Platform vendor program	The fluid passed that program's tests
Hardware / CDU approval	Equipment vendor	The fluid is permitted for that equipment and its warranty
Supplier datasheet	Fluid maker	Properties and maintenance limits

Castrol describes the review behind its NVIDIA validation as covering corrosion resistance, thermal stability, water quality, propylene glycol purity, wetted-material compatibility and supply-chain resilience. Other suppliers' published descriptions vary.

How to use this list in procurement

Shortlist the fluids that appear here and on your hardware vendor's approved list.
Request the current datasheet, SDS and maintenance limits.
Ask which OCP document and version the fluid claims to meet.
Compare sampling and service programs.
Confirm regional supply, lead times and packaging.
Record the fluid lot used in each loop.

Keeping this list current

Qualifications are announced through press releases and trade media and may change. We list only claims we can source, with the date in each supplier profile. If you see a missing or outdated entry, send a public source via our contact page.

How qualified fluids differ

Dimension	Examples from the list
Inhibitor family	Organic acid (Castrol ON PG25), inorganic (Castrol PG25T), hybrid (BASF GLYTHERMIN DC PG25)
Additive exclusions	Free of 2-EHA, borate and silicate (Shell DLC Fluid S3); free of nitrites, borates and 2-EHA (Arteco ZITREC EC)
Dye	Green fluorescent (Shell), yellow (Dow), fluorescent (BASF)
Format	Ready-to-use PG25 (most listed products)

These differences matter for leak detection, compatibility with specific wetted materials, and top-up rules. Each item is cited on the supplier's profile.

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Questions this list can't answer

Whether a fluid is approved by your specific cold-plate or CDU vendor
Current pricing and lead times (not published)
Lot-to-lot consistency
Long-term field performance in your conditions

Date-stamped snapshot

This list reflects public statements we found as of October 2026. Supplier profiles show the source dates.

What to do next

Use the list to shortlist, then verify the hardware approvals.

Request qualification documentation directly from suppliers.

Open the comparator to filter these fluids, then read each supplier profile for the cited facts and the questions to ask before specifying.

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Frequently asked questions

Which coolants are NVIDIA DSX Ready?

Public reports include BASF GLYTHERMIN DC PG25, Shell DLC Fluid S3, Dow DOWFROST LC and Ecolab's PG coolant. See the table and sources.

Is PG25 the standard for direct-to-chip?

It's the most common fluid in the list, and OCP publishes PG25 guidance.

Does DSX Ready mean approved by my server maker?

Not necessarily. Check the hardware approvals.

Will more products be added?

Likely, as suppliers announce qualifications.

Are immersion fluids on this list?

This list focuses on direct-to-chip coolants reported as qualified.

The 9 suppliers NVIDIA names

NVIDIA's DSX Ready program added a coolant category for qualified PG25 fluids used in the secondary loop of single-phase cold-plate systems. NVIDIA's announcement welcomed nine suppliers: BASF, BEYOND by Valvoline, Castrol CORE Cooling Solutions, Dow, Dynalene, Ecolab, PFX Group, Shell and ZITREC EC (Arteco). That is a count of suppliers, not products. NVIDIA's public pages don't list product names, so the products in the table come from each supplier's own announcement or page.

Source: NVIDIA AI Infrastructure: DSX Ready ecosystem expands with coolant partners (LinkedIn, Oct 2026); NVIDIA: DSX Ready program page (coolant category).

How we source this page

Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.

Sources

NVIDIA DSX Ready and qualified coolants