How to Test Office Chairs

The testing methods for office chairs should be comprehensively evaluated from multiple dimensions, including materials, user experience, standard compliance, and durability. These can be specifically categorized into the following four types:

1. Material and Physical Performance Testing
Directly assess material characteristics through sensory evaluation methods:

• Leather and Fabric: Observe whether the leather texture is natural and uniform, and touch to check if the genuine leather feels soft and elastic; for fabric, inspect surface flatness and tear resistance.
• Cushion Breathability: Press the cushion surface with the palm to feel air circulation, or use a thermal imaging camera to detect temperature changes after prolonged use.
• Metal and Plastic Components: Check if welds are flat and free of cold welds, and ensure plastic parts have smooth edges without burrs to avoid scratching risks.

2. Practical User Experience Testing
Deeply use different models of office chairs, focusing on the following functions:

• Cushion Support: After prolonged sitting, check if the buttocks and thighs feel numb due to concentrated pressure; a high-quality cushion should evenly distribute body weight.
• Adjustability: Test the smoothness of adjusting the cushion height, front-back position, and backrest tilt angle, and whether the headrest can fit the neck curve.
• Dynamic Comfort: Simulate daily office actions (such as leaning forward to type or leaning back to think) to evaluate whether the backrest automatically adjusts its support to the waist as the posture changes.

3. EN1335 Standard Testing
The internationally recognized standard covers four core tests:

• Static Load Capacity: The seat should withstand a vertical pressure of 120 kg for 60 seconds, and the backrest should withstand a backward pull of 45 degrees to check for cracks or deformations exceeding 3 mm in metal components.
• Stability Testing: Use a tilting platform to simulate the user leaning forward, backward, or sideways, and record the chair wheel lift-off situation; chairs with casters should be tested for locking function under horizontal thrust, with no more than two wheels lifting off when tilted 15 degrees.
• Structural Durability: The seat should undergo 100,000 vertical pulse loads (at a frequency of 30 times per minute), and the backrest should complete 50,000 backward tilt cycles (with a load of 350 N). After testing, the moving parts should remain fully functional, and the seat height settlement should be ≤15 mm.
• Special Function Testing: Swivel chairs should withstand 20,000 cycles of rotation with a torque of 35 Nm; reclining chairs should have a relative displacement between the seat and backrest of less than 8 mm when the backrest is tilted to the maximum angle.

4. Durability Testing
Use a seat reciprocating impact tester to continuously impact with a 57 kg sandbag from a height of 30 mm, simulating long-term human use scenarios. Evaluate durability based on the number of impacts and the component failure rate; high-quality office chairs should typically withstand over 100,000 impacts without structural damage.