Hydro-cooled miners · MicroBT M63, M53, M33 series

Coolant for Whatsminer Hydro Miners

For MicroBT Whatsminer Hydro: M63 / M63S / M63S+ / M63S++, M53 / M53S / M53S+ / M53S++, M33S+ / M33S++, M64, M65, M54S++. Blended and shipped from Taylor, Texas, with a certificate of analysis on every lot.

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01

The short answer

Quick answer

MicroBT builds Whatsminer hydro coolant from pure or distilled water, its own Peric composite corrosion inhibitor at 5 to 7 wt%, and ethylene or propylene glycol at the ratio your freeze point needs. MicroBT's warranty covers its own inhibitor only, so we supply the other two parts: deionized water well under MicroBT's 5 µS/cm make-up limit, and ethylene glycol, uninhibited, for mixing with Peric.

Technician mixing hydro miner coolant from an Alliance Chemical IBC tote of deionized water and a drum of glycol beside a rack of hydro-cooled miners
02

What to order

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

Mixing and make-up water

Deionized Water ACS Reagent Grade

Conductivity under 1 µS/cm, chloride ≤ 0.4 mg/L and sulfate ≤ 1.0 mg/L, well inside MicroBT's limits. The water side of the Peric recipe, and the make-up water for evaporative loss.

Quart to 330-gallon tote · COA with every lot

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Glycol for the Peric recipe

Ethylene Glycol ACS Grade

Uninhibited ethylene glycol, minimum 99.9% assay, so the only inhibitor in the loop is the Peric package MicroBT warrants.

Quart to 330-gallon tote · COA with every lot

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Pre-diluted glycol

Ethylene Glycol 40/60

Uninhibited 40% ethylene glycol already cut with deionized water. Add the Peric inhibitor at MicroBT's dose for a ready coolant without handling concentrate.

Freeze point: -24.8 °C (-12.6 °F) max · Quart to 330-gallon tote · COA with every lot

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

03

What MicroBT requires

The coolant rules from the manufacturer's published documentation.

CoolantPure or distilled water + Peric composite corrosion inhibitor (5 to 7 wt%) + ethylene or propylene glycol, ratio set by freeze point
Inhibitor ruleDo not mix Peric with other inhibitor brands; coolants MicroBT has not tested are not covered by warranty
Recipe (per MicroBT)For 1,000 kg: 50 to 70 kg inhibitor, deionized water and glycol to 1,000 kg; target pH about 8.0
Wetted materialsAluminum cold plates, aluminum alloy, stainless steel, PA, PE, EPDM, PTFE, HNBR
Not allowedCopper in the loop (galvanic attack on aluminum plates); carbon-steel welds discouraged
Make-up waterDeionized water at 5 µS/cm or less
Coolant per minerAbout 1 L
TestingpH, conductivity, reserve alkalinity, appearance every 2 months; ions, hardness and bacteria every 6 months; replace after 1 year

Ethylene glycol freeze points from MicroBT's guide

Ethylene glycol Freeze point
30% -15 °C
40% -24 °C
50% -37 °C

Source: MicroBT WhatsMiner Hydro Cooling Operation Guide V1.5 (coolant composition, water-quality and test tables).

04

Spec check, line by line

MicroBT's initial coolant limits that the water and glycol control

Parameter MicroBT requirement What we supply Status
Make-up water conductivity ≤ 5 µS/cm Deionized water < 1 µS/cm at 25 °C (typical 0.4) Meets
Chloride < 20 mg/L Deionized water ≤ 0.4 mg/L; ACS ethylene glycol ≤ 0.5 ppm Meets
Sulfate < 10 mg/L Deionized water ≤ 1.0 mg/L; ACS ethylene glycol ≤ 5 ppm Meets
Total hardness (as CaCO₃) < 20 mg/L Deionized water Ca ≤ 0.1 and Mg ≤ 0.1 mg/kg Meets
Iron Increment ≤ limits in service Deionized water ≤ 0.01 mg/kg; ACS ethylene glycol ≤ 0.1 ppm Meets
pH, reserve alkalinity, D1384 corrosion pH 7.0 to 8.7; RA ≥ 2.0 mL; coupon limits Set by the Peric inhibitor you add; test the finished coolant after mixing Not tested

"Meets" rows are taken from our controlled specifications: the product technical data sheet and the deionized water specification we blend with. "On request" values are measured per lot and sent with your order when you ask.

05

Questions

What coolant does a Whatsminer M63 Hydro use?

MicroBT's guide calls for pure or distilled water, its Peric composite corrosion inhibitor at 5 to 7 wt%, and ethylene or propylene glycol at the concentration your freeze point needs. The finished coolant should start at pH 7.0 to 8.7 with sulfate under 10 mg/L, chloride under 20 mg/L and hardness under 20 mg/L.

Can I use another inhibitor or a premixed antifreeze?

MicroBT says not to mix its inhibitor with other brands, and coolants it has not tested are not covered by its warranty. If you stay on MicroBT's warranty, use Peric with clean deionized water and uninhibited glycol.

How do I mix 1,000 kg of Whatsminer coolant?

Per MicroBT: 50 to 70 kg of inhibitor, then deionized water and ethylene glycol to 1,000 kg, aiming for about pH 8.0. Pick the glycol share from the freeze table: about 40% glycol freezes near -24 °C.

What water should I use to top up?

Deionized water at 5 µS/cm or less, and only for evaporative loss. Top up leaks with mixed coolant so the glycol and inhibitor stay at strength.

Is propylene glycol allowed?

Yes. MicroBT allows ethylene or propylene glycol at 20 to 50%. Ethylene glycol moves more heat at the same strength; propylene glycol is lower in toxicity.

How often should Whatsminer coolant be tested?

pH, conductivity, reserve alkalinity and appearance every 2 months; copper, iron and aluminum ions, sulfate, chloride, hardness and bacteria every 6 months. MicroBT recommends replacing the coolant after one year.

Quote a fill

Tell us the site, the number of totes or the system volume, and the date the coolant has to be on site. We reply with pricing, freight and lead time.

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MicroBT and Whatsminer are trademarks of their respective owners. Alliance Chemical is not affiliated with or endorsed by MicroBT and does not sell the Peric inhibitor. Requirements are quoted from MicroBT's published Hydro Cooling Operation Guide; confirm against the current guide and your warranty terms before filling.