Round Bottom Boiling Flasks with Socketed Double Neck

Features:  

• Dual functionality: A key advantage over double-neck flasks is the ability to connect two components at once, such as a condenser for reflux and a dropping funnel for the controlled addition of reagents or a thermometer pocket (probe) to measure the temperature of the substance.
• Temperature monitoring: A thermometer or temperature probe can be inserted via the angled neck (often using an adapter or "thermometer pocket," which is a glass jacket designed to securely hold the thermometer) to accurately measure the internal temperature of the substance without compromising the sealed system.
• Material: Borosilicate glass 3.3, which offers excellent resistance to heat, chemicals, and thermal shock, allowing for direct heating with a mantle or open flame.
• Design: The spherical bottom provides uniform heating and greater stability under vacuum, as the stress is more evenly distributed across the surface compared to a flat bottom flask.
• Neck: The single neck features an outer ground glass joint (socket) at the opening.
• Joint Sizes: The ground glass joints come in standardized sizes, designated by a diameter and height measurement (e.g., 19/26, 24/29, 24/40, 29/32), ensuring interchangeability with other standard laboratory equipment.
• Capacity: These flasks are available in a variety of capacities, ranging from small sizes like 25 mL or 50 mL to much larger volumes of 5000 mL (5 L) and more.
• Stability: Due to their round base, they cannot stand on their own and require the use of a cork ring or a specialized flask stand/clamp for support when not part of an assembled apparatus. 

  Common Applications:  

• Distillation: Used as the distilling flask or receiving flask in distillation setups.
• Reflux: Serves as the reaction vessel when a condenser is attached for a reflux procedure.
• Rotary Evaporators: Often used as the distilling flask in rotary evaporators to remove solvents.
• Chemical Reactions: Ideal for general heating, mixing, and reactions where an airtight seal is necessary to contain vapors or maintain an inert atmosphere. 

 Specifications:

• Material: 3.3 Borosilicate glass
• Design: One Neck, spherical bottom
• Neck: Single ground glass joint (socket)
• Joint Sizes: 19/26, 24/29, 24/40, 29/32, 34/35 (Select an option)
• Capacity: 250mL to 20 000mL (Select an option)
• Compliant with: DIN/ISO 1239
• Product of India
• Brand: ARCO