Technical tenders sometimes identify a brand, model or reference product and allow “or equivalent”. The supplier's job is then to prove equivalence against the actual requirement. The safest approach is to compare characteristics line by line instead of arguing that the alternative is generally similar.
The tender wording controls the assessment. Where the document defines equivalence, mandatory characteristics or an approval process, follow that method.
Start by separating brand identity from required performance
Ask why the reference product appears. Is it defining physical dimensions, electrical ratings, protocol compatibility, material, output, accuracy, certification, environmental protection, warranty, lifecycle support or an installed-base interface?
The equivalent product should satisfy the characteristics that matter to the buyer's outcome, including any attributes expressly marked mandatory.
Create a compliance matrix
List every technical requirement in one column and the proposed alternative's value in the next. Add the supporting datasheet page, certificate, drawing or manufacturer statement. The result should let an evaluator verify equivalence without searching through an entire catalogue.
Use clear statuses such as Comply, Exceed, Deviate or Not Applicable. If the offered value differs, describe the consequence rather than hiding the deviation.
Equivalent does not always mean identical
An alternative may use a different technology or design while still meeting the functional requirement. But a deviation that changes installation, power supply, maintenance, consumables, software integration, safety approval or operating cost may be material even if headline performance looks similar.
Equivalence should therefore be assessed across the complete use case, not one marketing specification.
Check interfaces and compatibility
Where the product must connect to existing equipment or systems, verify mechanical interfaces, connectors, communications, protocols, data formats, mounting, dimensions, power requirements and software compatibility. A technically strong product can still be non-equivalent if it cannot function within the existing environment without unapproved changes.
Standards and certifications may be decisive
If the tender requires a specific standard, regulatory approval, safety classification, professional certification or test method, equivalent performance alone may not satisfy the condition. Provide the exact certificate or test evidence requested and confirm that it applies to the offered model.
Compare warranty, support and lifecycle
Technical equivalence may include the commercial performance of the product: warranty period, repair process, availability of spares, local support, consumables, software updates, manufacturer continuity and expected service life.
Where the reference product is part of a standardised fleet, the cost of introducing a new platform may also matter to the buyer.
Do not rely on a supplier email alone
A distributor saying “this is equivalent” is weaker than a controlled evidence pack. Depending on the procurement, useful evidence may include:
- Manufacturer datasheets.
- Technical drawings.
- Compliance certificates and test reports.
- Manufacturer comparison letters.
- Samples or demonstrations where permitted.
- Integration or compatibility statements.
- Warranty and support terms.
Clarify ambiguous reference specifications
If the tender names a product but does not explain which characteristics establish equivalence, submit a clarification question through the prescribed channel. This is particularly important where different interpretations would materially change price or solution design.
Price the equivalent solution as a complete solution
A cheaper unit is not cheaper if it needs additional adapters, licences, installation work, training, spares or modifications. Compare landed and installed cost, not only unit price.
Make the evaluator's decision easy
The strongest alternative offer states exactly what is being proposed, identifies every deviation and provides evidence against each requirement. The goal is not to persuade the buyer with broad claims; it is to demonstrate, line by line, that the proposed solution satisfies the requirement.