We develop coolant concepts tailored to your needs in order to optimise tool and coolant service life and to increase the productivity of your manufacturing processes.

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As part of our HWU Lubtec Fluid Management services, we have set up an extensive coolant service programme, which our specialists for materials processing will tailor to your individual requirements. We would also be happy to advise you in the event of existing challenges such as contamination, foaming, corrosion or tramp oil and then develop a tailor-made coolant concept to optimise your machining processes.

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Benefits of Our Coolant Service

At a Glance

  • Extended coolant and tool life
  • Increased resource efficiency & reduction in material, energy and disposal costs
  • Highest levels of occupational safety and environmental protection
  • Customised advice and development

Coolant Service Service Programme Overview

Our coolant service programme is as diverse as your machining process and is tailored to your needs and requirements by our application engineers. Below you will find an overview of the many options. Should you have any further requests, please do not hesitate to contact us - we have an extensive network and can always find the right solution to sustainably optimise your machining processes.

  • Regular testing
  • Comprehensive process analytics
  • External laboratory analytics
  • Machine cleaning
  • Technical equipment
  • Smart Fluid Control
  • Field tests and feasibility tests
  • Training
  • Inspections according to TRGS 611
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Calculating the Refill Concentration for Water-miscible Coolants

Basic Information


Refill Concentration


Refractometer value to be read


It is not possible to completely lower the concentration to the desired target concentration.

Please increase the refill volume by partially emptying the tank. If you have any further questions about the procedure, please contact our lubricant experts.


  • Note the refractometer factor! Current concentration = refractometer reading x refractometer factor
  • Always use at least a 0.5% concentration for replenishment (otherwise there is a risk of reverse emulsion)
  • Always add water first, then the concentrate. Better: use a canister or drum mixer!