Which condenser should be used with Reactor-Ready Pilot? For Reactor-Ready Pilot, we recommend the use of Radleys large condensers with a high surface area for condensing the vapour generated from the larger vessels. Our general guidance is: RR139300: Large Double Coil Rodaviss Condenser 60mm B34 + GL18 + fittings should be suitable for up to 5-10 L vessels. RR139302: Large Double Coil Rodaviss Condenser 85mm B34 + GL18 + fittings should be suitable for up to 15-20 L vessels. The total coil surface areas for RR139300 and RR139302 are 0.13 m2 and 0.25 m2respectively.