印度采购需求：小型冻干机、真空冻干机、玻璃夹套反应器、旋转蒸发仪、刮膜萃取仪、分子蒸馏仪

Looking for a high-quality freeze drying system with an automatic vacuum path leak safety mechanism to prevent oil backflow during power outages. Must feature a hot gas bypass for smooth ice refreezing and removal. A Pirani vacuum gauge for precise measurement linked with a safety valve is essential. The unit should include a drain vacuum hose, cylindrical stainless-steel bath, and a cooling system utilizing R404A refrigerant for optimal temperature control. Compatibility with various accessories like vacuum pumps, manifold, dry flasks, and glassware sets is a must for full operational capability. Please provide detailed specifications and pricing.