... Rotary Speed, Heating Bath Temp. & Vacuum Rate;- Bath Lifting;- Senco Patent PTFE discharge valve, durable and easy use.- ... 500ml, 1L, 3LSymbol Instruction: - Y - (Equipped), - O - (Optional), - / - (N/A) ( * - Only available when ordering of product, not for separate sale ... try our services, products, to work with our people. A different experience-- Simple & RelexedSENCO, China made, Rotary Evaporator ...