There is a selection of Rothenberger testing equipment available at Trading Depot; including rotest leak detection spray and rotest leak detection fluid, both used for detecting leaks in joints, appliance connections and gas cylinders.
Also available are longer burning smoke matches ideal for use when testing chimneys, flues, gas appliances, smoke alarms and spillage tests, plus standard smoke pellets suitable for testing flues, chimneys, pipework, boilers and drains.