印度采购需求：夹套玻璃反应器、旋转蒸发器、加热循环器、真空泵、玻璃反应器、玻璃合成器

We're looking for a fractional distillation column with reflux capabilities for pilot-scale lab use, featuring a 10L capacity, borosilicate glass construction, and structured packing options. Key specs include a 50mm diameter and adjustable height, along with a compatible round-bottom reboiler. The setup should include a shell-and-coil or coil condenser, digital controls for temperature and reflux ratio, and safety alarms. Vacuum operation is optional, requiring appropriate pumps and gauges. Additionally, we need necessary tubing, clamps, and detailed documentation to ensure compliance with relevant standards.