A foam block can look perfect and still sag in six months, so mattress and seat makers insist on numerical tests. Buyers looking for foam testing instruments manufacturers in India can source the full bench from our factory, with our suppliers in India service covering polyurethane foam plants, seating makers and test labs.
Foam properties are divided into firmness, durability and structure. Firmness is measured with the digital indentation force deflection tester. Durability is judged by compression set with constant deflection plates, the humid ageing chamber, and the constant force pounding fatigue tester that simulates years of use.
Structure and strength are checked with the density and cell count kit, the air flow permeability tester, the tensile and elongation machine with die cutter and the tear strength tester with trouser fixture. Resilience is read on the ball rebound apparatus, and the horizontal flammability tester covers safety. Most foam labs set up the entire group, because customers quote all of these properties in a typical specification.
Last updated: November 2026
Computer-controlled indentation tester that presses a circular indenter into flexible foam to measure the force needed at 25, 40 and 65 percent deflection. Used in mattress, cushion and automotive seat foam quality control per ASTM D3574 and ISO 2439.
Air flow tester that measures the volume of air passing through an open cell foam specimen at a set pressure drop. Used by acoustic, filter and cushion foam makers under ASTM D3574 Test G to assess cell openness.
Compression set tester that holds flexible polyurethane foam specimens at a fixed deflection inside an oven to measure permanent deformation. Used by mattress, furniture and automotive seating foam plants for ASTM D3574 and ISO 1856 testing.
Precision balance kit with specimen cutter and thickness gauge for determining apparent core density of cellular foam. Used by polyurethane and polyethylene foam producers for batch certification under ASTM D3574 and ISO 845.
Pounding fatigue machine that repeatedly compresses foam cushions with a loaded indenter to measure loss of height and hardness. Used by seating and mattress makers for durability validation under ASTM D3574 and ISO 3385.
Horizontal burn chamber that measures the flame spread rate on flexible foam used in automotive interiors and furnishings. Complies with FMVSS 302 and ISO 3795 and is used by seating foam suppliers.
Programmable humidity chamber that conditions foam specimens at 50 to 90 deg C and up to 95 percent RH for humid ageing tests. Used by automotive seating and mattress foam suppliers under ASTM D3574 Test J and ISO 2440.
Ball rebound apparatus that drops a steel ball onto a foam specimen and reads the percentage rebound height. Foam manufacturers use it to grade resilience of polyurethane cushioning according to ASTM D3574 and ISO 8307.
Tear testing machine with trouser-type grips that measures the force to propagate a cut through flexible polyurethane foam. Used by foam and bedding manufacturers to qualify material under ASTM D3574 Test F.
Tabletop tensile machine with pneumatic grips and dumbbell die set for measuring tensile strength and elongation at break of flexible foam. Used in foam conversion and automotive trim laboratories under ASTM D3574 and ISO 1798.
| Function | Products | What to confirm |
|---|---|---|
| Firmness and comfort | Digital Foam Indentation Force Deflection Tester, Foam Resilience Ball Rebound Tester, Foam Air Flow Permeability Tester | Indenter diameter, force range and speed, ball size and drop height, air flow range and specimen size for each test. |
| Durability | Foam Compression Set Tester with Constant Deflection Plates, Foam Humid Ageing Chamber for Compression Set Testing, Foam Dynamic Fatigue Tester with Constant Force Pounding | Plate spacing options and number of specimens, chamber temperature and humidity range, pounding load, cycle rate and counter. |
| Strength and structure | Foam Tensile and Elongation Testing Machine with Die Cutter, Foam Tear Strength Tester with Trouser Specimen Fixture, Foam Density and Cell Count Measuring Balance Kit | Load cell capacity, grip type, die shapes supplied, balance resolution and thickness gauge accuracy. |
| Safety | Foam Flammability Tester for Horizontal Burning Rate | Chamber size, specimen holder, flame height setting, timing marks and exhaust arrangement. |
The automotive range includes a seat foam pounding fatigue tester as one item in a list of vehicle part rigs. This foam range goes deeper into the material itself, with indentation hardness, compression set, resilience, tear, tensile, density and flammability. Mattress, furniture and packaging foam plants do not need the vehicle-level rigs, while a car seat supplier often buys from both.
See also: Automotive Material and Parts Testing Instruments
The complete Foam Testing Instruments range (10 products), in alphabetical order:
Confirm the indenter diameter, normally 200 mm for mattress and seat foam, the force capacity and the specimen sizes it accepts. The tester should record force at 25, 40 and 65 percent deflection, with automatic thickness measurement. Software that stores results and calculates the support factor saves time, and a computer-controlled model gives better repeatability than a manual one.
Compression set squeezes foam to a fixed deflection for a time at elevated temperature, then measures how much thickness is lost when released. Fatigue testing repeatedly flexes the foam under load, replicating years of use, and measures loss of height and hardness. Both are required by most mattress buyers, so plan equipment for both.
Check that chamber dimensions suit the specimen size in your standard, the burner and gas supply system, flame height setting and timing method. A stainless steel interior and a good extractor are important. If the foam is sold in markets with stricter fire rules, discuss the standard with us before ordering.
Polyurethane foam manufacturers, mattress and bedding makers, sofa and seat producers, automotive seating suppliers, packaging foam converters, and independent testing labs buy this range. A foam plant normally begins with density, IFD and compression set, then adds fatigue and ageing to qualify for large mattress or automotive customers.
Yes. We make and supply the instruments for foam plants within India and abroad. Provide the foam type, standards followed and supply voltage when you ask for the quotation.
Indentation force deflection is the force needed to compress a foam sample by a set percentage of its thickness, using a circular indenter. It describes firmness as the user feels it, and mattress and cushion makers use it to grade foam.
Foam is conditioned at high temperature and humidity to speed up the loss of resilience that would occur over years of use. Comparing compression set before and after ageing indicates durability under tropical conditions.
Yes, as long as the load cell and grips suit the material. Foam requires a low capacity cell and light grips, so mention if you also plan to test rubber or fabric on the same unit.
Dies of defined shape cut dumbbell or trouser specimens from foam sheets so that results are comparable between batches. We supply the die shapes needed for the standards you name.
We are leading manufacturers and suppliers for tender requirements from India, serving civil laboratory and industrial testing tenders and supplying mechanical engineering and testing laboratory equipment in bulk and on OEM terms. Send us your tender specifications, and a complete quotation for Foam Testing Instruments will be prepared accordingly.
Send us your equipment list or tender specification. We quote against IS, BS, EN, ASTM and AASHTO standards and ship to 90+ countries.
