BIZOMAT MAKEOS · Maintenance
Coolant Blend
What volumes make the required final coolant concentration?
Balance two compatible volume concentrations to prepare a specified final coolant volume.
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How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Required final volume | L | Required final working volume with tank operating allowance. |
| Stronger-fluid concentration | % | Actual volume concentration of the stronger fluid; 100% denotes the same product concentrate. |
| Weaker-fluid concentration | % | Actual concentration of the weaker compatible fluid; 0% denotes intended make-up water. |
| Target concentration | % | Supplier-approved target for the operation. |
What each input means
Open an input to see what it is, its units, the worked example and the common mistakes, with a small diagram.
What this means: Required final volume
- What it is
- The total volume of mixed coolant you want to make up, including any operating allowance for the tank.
- Units and format
- Enter a number in L: litres. The form accepts 0.001 L to 1000000 L. Required: the tool does not calculate until every input is valid.
- Example
- The form opens with 100 L as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- Both fluid volumes are directly proportional to the final volume.
- Get it right
- Use the working volume you will actually fill, not the tank’s brim capacity.
What this means: Stronger-fluid concentration
- What it is
- The concentration by volume of the stronger fluid you are mixing in: neat concentrate or an already-mixed stronger batch.
- Units and format
- Enter a number in %: percent: the number is read as a percentage, so type 8 for 8 %. The form accepts 0% to 100%. Required: the tool does not calculate until every input is valid.
- Example
- The form opens with 100% as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- A stronger fluid means less of it is needed to reach the target.
- Get it right
- Neat concentrate of the same product is 100 %; a premix is lower, so measure or check it.
What this means: Weaker-fluid concentration
- What it is
- The concentration by volume of the weaker fluid, usually make-up water or a weak existing mix of the same product.
- Units and format
- Enter a number in %: percent: the number is read as a percentage, so type 8 for 8 %. The form accepts 0% to 100%. Required: the tool does not calculate until every input is valid.
- Example
- The form opens with 0% as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- A stronger weak fluid reduces the volume of strong fluid needed.
- Get it right
- Use 0 for plain water; it must be lower than the stronger fluid.
What this means: Target concentration
- What it is
- The concentration by volume the final mix should have, as approved by the coolant supplier for this operation.
- Units and format
- Enter a number in %: percent: the number is read as a percentage, so type 8 for 8 %. The form accepts 0% to 100%. Required: the tool does not calculate until every input is valid.
- Example
- The form opens with 5% as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
- Effect on the result
- A higher target needs more of the stronger fluid.
- Get it right
- Use the volume concentration; refractometer readings usually need the product’s correction factor first.
Method and formulas
- Stronger volume = final volume × (target − weaker concentration)/(stronger − weaker concentration). Weaker volume is the remainder.
- The stronger concentration must exceed the weaker, with the target between them. All percentages use the same volume basis.
- Example: 100 L at 5%, made from 100% concentrate and 0% water, requires 5 L concentrate and 95 L water under the additive-volume assumption.
Limitations
- Volumes are assumed additive. Mass-based concentrations require density-aware mass balance.
- Streams must be compatible forms of the same coolant system. No compatibility or mixing-order advice is inferred.
- Refractometer readings require the product-specific factor and contamination checks.
- Default values are worked examples, not recommended settings or material properties.
Typical uses
- coolant mixing
- dilution
- concentration balance
Who it is for
- Maintenance teams
- Machine shop supervisors
What you get
- Stronger-fluid volume
- Weaker-fluid volume
- Concentrate-equivalent balance
Interpreting the result
- Follow supplier mixing instructions, circulate and measure final concentration.
- Record actual quantities and check product range, water quality and coolant condition.
References
- Machinery’s Handbook, 29th edition (Industrial Press, 2012), printed pp. 1182–1187. Topic reference; implementation and examples are original, and no source tables are reproduced.
- Blaser Swisslube: Measuring coolant concentration — https://blaser.com/measuring-the-coolant-concentration/
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