Yanqing Office Chair Testing

Office chair testing in Yanqing can be carried out by third-party institutions that comply with the EN1335 standard. The specific process and requirements are as follows:

I. Testing Standards and Core Content Office chair testing is mainly based on the European standard EN1335, which is a core document in the office furniture field, focusing on stability testing and caster durability testing:

1. Stability Testing:
   • Static Testing: On a rigid horizontal surface, a loading block is fixed to the seat surface, and a 250-newton horizontal thrust is applied to observe whether the chair legs lift off the ground, assessing the anti-imbalance ability during forward leaning, backward leaning, or sideways leaning.
   • Dynamic Testing: The loading block is released to impact the chair back, simulating the impact force of a sudden backward lean, and testing the structural stability. If the chair is equipped with lockable casters, the locking mechanism must remain effective throughout the test.
2. Caster Durability Testing:
   • A dedicated platform is used to simulate long-term pushing scenarios. The casters bear a load of 100 kilograms and rotate alternately at a speed of 10 revolutions per minute for 72,000 times (approximately simulating 12 months of usage frequency).
   • The judgment criteria include: the increase in rolling resistance does not exceed 50% of the initial value, the casters can still rotate freely after the test with a deviation angle not exceeding 5 degrees, and no parts fall off during the test.

II. Testing Environment and Sample Pre-treatment All tests must be carried out under standard conditions of 23°C temperature and 50% relative humidity. Samples need to be placed in a constant-temperature and humidity chamber for 48 hours in advance to achieve moisture absorption equilibrium. For samples with height adjustment mechanisms, the gas struts should be adjusted to the midpoint of the stroke to ensure that the geometric parameters are in the most unfavorable state during the test.

III. Local Testing Channels in Yanqing

1. Third-party Testing Institutions: Contact third-party institutions with EN1335 standard certification qualifications. You can inquire about cooperative testing parties through the Beijing Yanqing District Quality Office Furniture One-stop Procurement Platform.
2. Brand Value-added Services: Some office furniture brands (such as Kerkano and Huadan Furniture) may offer value-added services in cooperation with testing institutions. You can learn more.

IV. Precautions Before testing, confirm the qualifications of the institution to avoid invalid results due to non-compliance with standards. If the sample is customized or has a special structure, communicate with the testing party in advance to adjust the testing plan.