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Glycol Coolant Finder

Replacing DOWFROST, DOWTHERM, PROTOCOL, NOBURST or another branded glycol, or cooling a Bitdeer, Antminer or Whatsminer rig? Find our matching coolant, compared by freeze point. Blended and shipped from Taylor, Texas, with a certificate of analysis on every lot.

Find your coolant Get a tote quote

01

The short answer

Quick answer

Pick your equipment or the fluid you use today, and the page for it lays out the maker's coolant rules next to our product, line by line, including where we do not meet them. We blend inhibited ethylene and propylene glycol coolants and deionized water in Taylor, Texas, and ship them in pails, drums and 275- or 330-gallon totes with a certificate of analysis on every lot.

AI data hall with direct-to-chip liquid cooling: server racks with blue and orange coolant manifolds and a coolant distribution unit at the end of the aisle
02

Find your coolant

Pick your equipment or the fluid you use today.

Replacing a branded glycol

Matched on freeze point, never on the number in the product name.

ClariantEG Antifrogen N Closest matchInhibited Ethylene Glycol 40/60, Nitrite-Free Side-by-side comparison DowEG DOWCAL 100E Closest matchInhibited Ethylene Glycol 40/60, Nitrite-Free Side-by-side comparison DowPG DOWFROST Closest matchInhibited Propylene Glycol 30/70 with OAT Inhibitor +2 more Side-by-side comparison DowPG DOWFROST HD Closest match100% Propylene Glycol Inhibited +1 more Side-by-side comparison DowPG DOWFROST LC Closest matchInhibited Propylene Glycol 30/70 with OAT Inhibitor +2 more Side-by-side comparison DowEG DOWTHERM SR-1 Closest match100% Ethylene Glycol Inhibited +2 more Side-by-side comparison DynaleneEGPG Dynalene PG-D, PG-A1 & EG-A1 Closest matchInhibited Propylene Glycol 30/70 with OAT Inhibitor +5 more Side-by-side comparison Nu-CalgonPG Freez-Kontr'l Closest matchInhibited Propylene Glycol 35/65 with OAT Inhibitor +4 more Side-by-side comparison OateyPG Hercules Cryo-Tek Closest matchInhibited Propylene Glycol 50/50 with OAT Inhibitor +4 more Side-by-side comparison Interstate ChemicalEGPG INTERCOOL EG & PG Closest matchInhibited Propylene Glycol 30/70 with OAT Inhibitor +5 more Side-by-side comparison KOST USAPG KOSTChill PG HD Closest match100% Propylene Glycol Inhibited +1 more Side-by-side comparison Noble CompanyPG NOBURST Closest matchPropylene Glycol 60% Inhibited +4 more Side-by-side comparison Thermal Fluid TechnologiesEG PROTOCOL LT Closest matchInhibited Ethylene Glycol 40/60, Nitrite-Free +2 more Side-by-side comparison Thermal Fluid TechnologiesPG PROTOCOL NT Closest matchInhibited Propylene Glycol 25/75 with OAT Inhibitor +4 more Side-by-side comparison RecochemPG RECOFREEZE PG & AL Closest matchInhibited Propylene Glycol 30/70 with OAT Inhibitor +4 more Side-by-side comparison Rhomar WaterPG RhoGard Closest matchPropylene Glycol 60% Inhibited +4 more Side-by-side comparison Old World IndustriesEGPG Thermal Charge EG & PG Closest matchInhibited Ethylene Glycol 50/50 with OAT-908 +2 more Side-by-side comparison

By equipment

What each maker's cooling guide asks for, and what we supply.

BitmainEG Antminer Hydro S21 XP Hyd · S21 XP+ Hyd · S21 / S21+ / S21e Hyd +3 more We supplyInhibited Ethylene Glycol 40/60, Nitrite-Free +1 more Coolant rules and products BitmainEG ANTSPACE HK3 hydro container ANTSPACE HK3 V2 · ANTSPACE HK3 V6 · ANTSPACE HD5 We supplyInhibited Ethylene Glycol 40/60, Nitrite-Free Coolant rules and products BitdeerEG SealMiner Hydro A2 Hyd · A2 Pro Hydro · A3 Hydro +3 more We supplyInhibited Ethylene Glycol 40/60, Nitrite-Free Coolant rules and products MicroBTEG Whatsminer Hydro M63 / M63S / M63S+ / M63S++ · M53 / M53S / M53S+ / M53S++ · M33S+ / M33S++ +3 more We supplyEthylene Glycol ACS Grade +1 more Coolant rules and products
03

What to order

The products that fit this spec, and what each one is for.

Nitrite-free specs

Inhibited Ethylene Glycol 40/60, Nitrite-Free

For equipment makers that require nitrite-free coolant: 40% ethylene glycol, sodium benzoate inhibitor, ready to fill.

Freeze point: about -25 °C (-13 °F) typical · Quart to 330-gallon tote · COA with every lot

See sizes and pricing Technical data sheetSafety data sheet
General closed loops

Inhibited Ethylene Glycol 40/60 with OAT-908

-12.6 °FFreeze point
typical · -12.6 °F max · 40 vol% ethylene glycol

40% ethylene glycol with a nitrite-containing hybrid organic-acid inhibitor, for loops where nitrite is acceptable.

Quart to 330-gallon tote · COA with every lot

See sizes and pricing Technical data sheetSafety data sheet
Flush and make-up

Deionized Water ACS Reagent Grade

Conductivity under 1 µS/cm for flushing, blending and evaporative top-off.

Quart to 330-gallon tote · COA with every lot

See sizes and pricing Technical data sheetSafety data sheet

Need a different concentration? We blend to the freeze point you specify, in pails, drums and 275- or 330-gallon totes.

04

Rules that apply to almost every loop

What the equipment makers' coolant guides have in common.

WaterDeionized or distilled water only, for blending, flushing and top-off. Tap and softened water add chloride and hardness.
Glycol strengthThe lowest concentration that covers your coldest fluid temperature plus margin; stronger glycol moves less heat.
Aluminum cold platesMost hydro miners use aluminum plates and ban copper in the loop. Check whether your maker also requires a nitrite-free coolant.
Never mix chemistriesChanging coolant means drain, flush with deionized water and refill, not topping up with a different product.
TestingpH, conductivity, reserve alkalinity and appearance every few months; metals and ions twice a year; replace on the maker's schedule.

Source: each equipment maker's published coolant documentation, linked on every page.

05

Questions

Which coolant does my liquid-cooled equipment need?

Start with the equipment maker's coolant guide; it sets the glycol type and strength, the water-quality limits and any banned inhibitors such as nitrite or silicate. Each page above lays those rules out for one family of equipment.

Ethylene glycol or propylene glycol?

Ethylene glycol moves more heat at the same strength and stays thinner when cold. Propylene glycol is chosen where lower toxicity matters. Many hydro miners allow either; most direct-to-chip server loops specify propylene glycol.

Do you sell a nitrite-free propylene glycol 25% (PG25)?

Not today. Our propylene glycol premixes use a nitrite-containing inhibitor. Our nitrite-free coolant is the ethylene glycol 40/60 premix.

How fast can you deliver?

Stocked drums ship in about 1 to 5 days. Truckload tote orders are quoted with a lead time when you send the site and quantity.

Do you provide documents for submittals?

Yes. Every product has a technical data sheet and SDS online, and the technical submittal page collects them in one place.

Quote a fill

Pricing, freight and lead time for your site

Tell us where the coolant goes, how much, and when it has to be there.

  • Priced for your volume, from pails to 330-gallon totes
  • Freight to your site from Taylor, Texas
  • Blended to the freeze point you specify, COA with every lot

Prefer to talk? (512) 365-6838

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