The document discusses test and control chambers used to study ageing effects in small thin gap chambers (sTGC). STGCs are wire chambers used in the new Small Wheel detector that contain a small gap between electrode plates filled with ionizing gas. Test results from a 600 hour study show a small increase in average charge collected over time by the test chamber, indicating minimal ageing occurred. The current drawn also correlated inversely with atmospheric pressure fluctuations but not temperature. Ageing effects could reduce collected charge over time as insulative deposits form on electrodes weakening the electric field.