Choose for the circuit
Discuss pharmaceutical, chemical and HVAC circulation separately from fuel-cell or data-centre cooling. An industrial formulation is not automatically suitable for an electronic cooling loop.
Heat transfer fluids
The versatile industrial range: water-dilutable fluids with model-specific options for aluminium protection, elevated temperatures, pharmaceutical processes and data-centre circulation.

Modified diols
Catalogue reference values, not a final specification. Select the exact model and concentration with our technical team. Request the current technical data sheet and safety data sheet before use.
View source: catalogue page 11Model and dilution determine operating limits. LM-4D requires ultrapure-water dilution and conductivity/pH monitoring. Per the manufacturer's product page, LM-4D is compatible with red copper, brass, stainless steel, 3-series and 6-series aluminium alloys, fluororubber, HDPE, natural rubber, PP, silica gel and PTFE. It is not recommended for carbon steel, pure aluminium, 1-series aluminium alloys, or any zinc / galvanised metal. Do not use an indirect-loop fluid as an immersion coolant without specific approval.
FROM FORMULATION TO APPLICATION
The LM-4 range spans industrial secondary cooling and specialised electronic cooling circuits. Model suffixes matter: they identify different material-compatibility and application requirements.
Discuss pharmaceutical, chemical and HVAC circulation separately from fuel-cell or data-centre cooling. An industrial formulation is not automatically suitable for an electronic cooling loop.
Confirm the water quality, dilution and inhibitor programme for the selected model. Do not extend an aluminium-compatibility statement or low-conductivity value to the whole family.
LM-4 · LM-4L · LM-4G · LM-4GL · LM-4BP · LM-4D · LM-4D-YE
Application notes are adapted from Glacier’s original product information. Numeric specifications on this page follow the supplied catalogue; earlier website figures may differ. Always obtain a current model-specific TDS and SDS. Links below point to the original source pages, not new technical documents.