Reference Document: BIFMA X5.1-2017
Section 5 - Backrest Strength Test - Static Type I: Apply force of 667N (150lbf) or 1001N (225lbf) to backrest at backstop position for one minute at 70±10 degrees angle.
Section 6 - Backrest Strength Test - Static Type II & III: Same as Section 5 with force of 667N (150lbf) or 1001N (225lbf) at 90±10 degrees angle.
Section 12 - Arm Strength Test - Vertical Static: Apply force of 750N (169lbf) or 1125N (253lbf) for one minute.
Section 13 - Arm Strength Test - Horizontal Static: Apply force of 445N (100lbf) or 667N (150lbf) for 15 seconds in outward direction.
Section 14 - Backrest Durability Test - Cyclic Type I: 120,000 cycles for chairs with backrest width ≤406mm, 80,000 cycles for width >406mm.
Section 15 - Backrest Durability Test - Cyclic Type II and III: 120,000 cycles for chairs with backrest width ≤406mm, 80,000 cycles for width >406mm.