The ARPI item Chemsniffer (ar_equipment_chemsniffer) can scan unknown chemicals to analyze them. Works via script in object init or module in ongoing game. Player must be in range of 15m.

Usage in editor:
+ Put in Init-field of object: this setVariable ["ar_rpi_scannable_type", "YOUR_CHEMICAL_IF_DETECTED"];


Usage in ongoing game:
+ To add in an ongoing game it must me "_this ..."
or
+ use the module "Set Chemical"

Usecase:
+ Let your players scan suspicious materials for contamination with hazardous material.