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On September 24, 2018, the U.S. Consumer Product Safety Commission (CPSC) has approved the direct final rule revising the mandatory standard for portable hook-on chairs to incorporate by reference, ASTM F1235-18 Standard Consumer Safety Specification for Portable Hook-On Chairs.

ASTM F1235-18 is the first revision to the standard since the promulgation of the federal rule for portable hook-on chairs. “Portable hook-on chair” is defined as:

  • Usually, a legless seat constructed to locate the occupant at a table in such a position and elevation so that the surface of the table can be used as the feeding surface for the occupant.
  • Supported solely by the table on which it is mounted. These chairs are intended for use by children between the ages of six months to three years and who weigh no more than 37 lb (16.8 kg) (95th percentile male at three years).

The revised standard contains one safety-related revision involving the installation of passive crotch restraints, requiring that such restraints be installed in a manner such that they cannot be removed without the use of a tool.

The ASTM subcommittee made this change to address products with fabric passive crotch restraints that are not permanently attached. The CPSC concluded that this change reduces the likelihood that the passive crotch restraint will be removed, thereby improving the safety of portable hook-on chairs.

ASTM F1235-18 standard becomes the mandatory safety standard for portable hook-on chairs on January 15, 2019, unless the CPSC receives any adverse comments by October 24, 2018.