Answer
Nov 18, 2025 - 11:18 AM
The "1:10 rule" for acetylene refers to the safety guideline that acetylene should never be used at pressures greater than 1 atmosphere (about 15 psi) and should never be mixed with air or oxygen at concentrations between 2.5% and 82% (approximately a 1:10 ratio of acetylene to air by volume), as this range is highly explosive. This rule is important to prevent dangerous explosions when working with acetylene gas.
