Derui chamberMattress test planning and laboratory equipment
EN 1957 helps laboratories evaluate mattress durability and hardness under a defined procedure. For manufacturers, the practical task is to turn the requested evaluation into a repeatable setup: the correct specimen and support, suitable loading equipment, consistent measurements and a report that explains the results.
Quick answer: Confirm that the product falls within EN 1957’s scope, identify the applicable edition and test items, and match the equipment to the loading and measurement functions required. Keep hardness or firmness rating separate from comfort and quality claims. Use the specified procedure and agreed criteria when evaluating the result.
1. What Is the Scope of EN 1957?
EN 1957 addresses functional characteristics of beds and mattresses, including durability and hardness. Its scope covers mattresses and fully erected beds with mattresses; mattress pads are included when they form a unit with the mattress. Water beds, air beds and children’s cots are outside its scope.
BS EN 1957:2012 is the British adoption listed by BSI. Identify the edition requested by the buyer or laboratory before planning the evaluation. Also record whether the sample is a mattress alone or part of a complete bed arrangement.
For equipment planning, the mattress testing equipment category provides an entry point to different testing systems. Selection should then follow the exact loading, measurement and specimen requirements.
Result boundary: EN 1957 results apply to the article tested. The standard does not evaluate ageing caused by air, light, humidity or temperature. Extending a result to other products requires a justified representative specimen.
2. Distinguish Durability, Hardness and Firmness Rating
Durability
Evaluate the relevant changes after the defined loading procedure. Record the specimen, setup, completed loading and measurements so the before-and-after comparison can be understood.
Hardness and firmness rating
Use the prescribed measurement and calculation method to describe the mattress response. Firmness rating does not, by itself, demonstrate comfort or product quality.
A harder mattress is not automatically better, and an unchanged appearance does not establish an unchanged mechanical response. Compare products with the same procedure and specimen arrangement, and state the purpose of the comparison.
Keep finished-mattress results separate from raw foam hardness. A foam measurement concerns the material and its specimen setup; a mattress result concerns a system that may include springs, foam, fabric, quilting and a foundation.
3. EN 1957, EN 1725 and ASTM F1566 Address Different Questions
| Reference | Planning question | What to confirm |
|---|---|---|
| EN 1957 | How will mattress or bed-with-mattress functional characteristics be evaluated? | Applicable specimen, durability and hardness methods, measurement sequence and assessment. |
| EN 1725 | Which safety, strength and durability requirements apply to the adult bed and its supplied components? | Product scope and required tests; a mattress functional assessment does not replace the complete bed evaluation. |
| ASTM F1566 | Which evaluation methods are requested for mattress components or mattress systems? | The selected test item and loading mechanism. The reference includes multiple methods, not only a Cornell-type setup. |
For the ASTM side of a project, use the ASTM F1566 mattress testing guide to prepare the scope. Roller-based testing and localized Cornell-type loading should not be treated as interchangeable results or as a complete description of either standard.
Where a buyer requests flammability, chemical or other evaluations, list them separately. A report for one mechanical test scope does not establish every aspect of mattress or bed performance.
4. Plan the Test Sequence and Measurement Conditions
The following checklist helps organise laboratory work. It does not prescribe the standard’s exact operating sequence. Set preparation, conditioning, loading, timing and measurement values from the applicable procedure.
- Identify the sample.Record model, construction, dimensions, production batch and the mattress, pad or foundation arrangement. Photograph the specimen and identify its orientation.
- Confirm the procedure.Record the standard edition, selected test items, specimen preparation and any buyer additions. Define how results will be assessed before testing.
- Prepare and verify the setup.Check support, loading fixture, positioning, travel, guarding and the measurement functions needed. Follow the specified specimen preparation and conditioning.
- Record the relevant initial measurements.Use the prescribed positions and conditions. Document settings and reference points so later measurements can be repeated consistently.
- Perform the agreed loading and intermediate work.Follow the specified sequence. Record completed loading, interruptions, adjustments, observations and any deviations.
- Complete the final measurements and assessment.Apply the required recovery and measurement conditions. Compare results using the specified method and report the actual configuration and findings.
Review the force, displacement, travel, rate, time and mass functions used by the setup. The furniture testing equipment calibration checklist helps organise checks and supporting records for these functions.
5. Match the Equipment to Each Required Function
A rolling durability mechanism and a hardness measurement assembly perform different functions. Confirm what the proposed package includes and what requires a separate accessory or instrument.
| Equipment function | Configuration points to confirm |
|---|---|
| Rolling loading | Required roller geometry and applied load, positioning, travel, speed and counting convention for the selected procedure. |
| Hardness measurement | Loading-pad geometry, force and displacement measurement, positioning and the required measurement sequence. |
| Specimen support | Support arrangement, usable dimensions, specimen handling and clearances for movement. |
| Control and records | Entered settings versus measured data, completed loading, interruption handling, sample identification and export needs. |
| Additional tests | Any requested edge or other buyer-specific work, its governing method, fixture, load and measurement requirements. |
| Installation | Approved configuration, utilities, access, operating instructions and the checks required after delivery. |
Request a written response against the test scope and a drawing or demonstration of the proposed fixtures. Do not infer hardness measurement, edge cycling or another loading mechanism from a general multi-standard description.
Count terminology matters: agree how the procedure and controller define a pass, stroke or completed cycle. Labels can differ between systems. The recorded count must correspond to the loading actually required.
6. Interpret Changes Without Adding Unsupported Grades
Read the results with the measurement conditions and specimen observations. Height change, hardness change and visible damage answer different questions; they should not be collapsed into a single “premium” or “poor” grade without an agreed assessment basis.
- Use the required calculation and units, and retain the relevant initial and final data.
- Check that the support, measurement positions and recovery conditions were consistent.
- Apply criteria from the governing procedure and document any additional buyer limits separately.
- Investigate unexpected changes with inspection and test records before assigning a material or component as the cause.
Do not translate a laboratory cycle count into a fixed number of years of consumer use without evidence. Similarly, an edge deflection figure should not be presented as a universal EN 1957 limit merely because it is used in a particular project.
7. Keep a Report That Supports the Decision
| Record group | Useful report content |
|---|---|
| Specimen | Model, batch, dimensions, construction, orientation and support or foundation arrangement. |
| Method | Edition, selected test items, preparation, conditions and any additional buyer procedure. |
| Equipment | Machine and instrument identities, relevant fixtures, settings and measurement records. |
| Execution | Loading completed, timing, interruptions, observations and deviations. |
| Results | Required measurements, calculations, inspection findings and the source of assessment criteria. |
A clear record lets a reviewer distinguish the tested sample, the method performed and the conclusion reached. Where work is performed by an accredited laboratory, confirm its relevant scope and reporting arrangements separately from the equipment purchase.
8. Information to Send for an EN 1957 Equipment Proposal
Provide the mattress dimensions and mass, the complete support arrangement, required edition and test items, buyer specification, measurement and export needs, and available laboratory space and utilities. Identify whether additional edge testing or another standard is part of the project.
Ask the supplier to separate included functions, optional accessories and work requiring other equipment. This makes it easier to compare proposals and agree the checks to be completed before routine operation.
9. Frequently Asked Questions
Does EN 1957 apply to every mattress or bed?
No. Check the product and specimen arrangement against the applicable scope before scheduling the evaluation.
Does firmness rating prove that a mattress is comfortable?
No. Firmness rating describes a characteristic assessed by the specified method. It cannot be used by itself to demonstrate comfort or product quality.
Does a rollator machine automatically measure hardness?
No. Confirm the supplied loading pad, measurement channels, positioning and software functions. Hardness measurements may need an additional assembly or separate equipment.
How should edge support be included in a test plan?
Identify the exact governing method and any buyer additions, then confirm the required specimen position, fixture, loading, measurements and assessment. Do not infer a universal edge procedure or limit from a machine’s marketing description.
What roller load, cycle count and recovery time should be used?
Use the values and sequence in the applicable edition and approved procedure. Confirm that the ordered equipment implements them, including the counting convention and required measurements.
Can Cornell results replace an EN 1957 evaluation?
Do not assume equivalence. Identify the requested test items and loading mechanisms and obtain agreement on the method used for the buyer’s decision.
Related Equipment and Planning Guides
- DR-J503-1 Mattress Rollator Durability Tester — discuss the roller and measurement configuration for your required procedure.
- Cornell mattress tester buying guide — compare configurations where localized loading is also required.
- How to set up a furniture testing laboratory — plan the test scope, equipment, utilities and records.
Standard References
Consult the BSI catalogue entries for BS EN 1957 and BS EN 1725 for their titles and scope. Use the applicable edition and laboratory procedure for detailed test parameters and assessment.
