HB 253 amends Section 481.125 of the Texas Health and Safety Code to decriminalize the use, possession, delivery, or manufacture of testing equipment specifically designed to detect substances listed in Penalty Group 1-B. The bill clarifies that this section does not apply to individuals handling testing equipment for identifying such substances, effectively removing criminal penalties for possessing or distributing drug testing tools aimed at detecting Penalty Group 1-B substances. This change applies to offenses committed on or after the Act's effective date, September 1, 2025​.