Raschig rings

拉西环

Real Crystal^® IR sample cards

Real Crystal^® 红外样品卡片

Real Crystal^® IR sample cards

Real Crystal^® 红外样品卡片

Rigid PTFE sleeve

Round bottom flask

Rubber ring for Quickfit^® cone/screw thread adapter

Schlenk reaction and storage tube

Schlenk reaction and storage tube

Single-bulb ball-tube

Single-bulb ball-tube