Two-Neck Glass Adapter with 45° Side Neck and Ground Joints, BORO 3.3 Glass

Description

The Two-Neck Glass Adapter with 45° Side Neck and Ground Glass Joints, BORO 3.3, also known as a two-neck multiple adapter, angled side-neck glass adapter or dual-socket laboratory glass adapter, is designed to connect multiple glassware components within a compatible laboratory apparatus. Manufactured from borosilicate 3.3 glass, this adapter features two upper female ground glass sockets and one lower male ground glass cone. Its configuration enables users to incorporate two connections into a single laboratory glassware assembly. The vertical neck provides a straight connection above the lower cone. This arrangement is useful when a laboratory procedure requires a component to be positioned directly over a flask or receiving vessel.

The 45° side neck provides a second connection at an angle, allowing an additional compatible glassware component to be incorporated without requiring a separate branching adapter. Both upper connections feature female ground glass sockets, while the lower connection is a male ground glass cone. The manufacturer’s specification lists one socket size for each variation, applying to the two upper sockets. The single base cone fits into the corresponding female ground joint of a laboratory flask or other compatible apparatus. The size of this cone may be equal to or larger than the upper socket size, depending on the selected variation. The adapter provides an effective connection arrangement for multi-component laboratory glassware setups, particularly when different operations need access to the same vessel.

Its angled design can assist with positioning suitable glassware components, such as compatible addition funnels, condensers or other jointed accessories, according to the requirements of the experiment. The precision ground glass joints provide interchangeable connections with matching laboratory glassware. Correct joint selection is essential for proper seating and reliable assembly. Joint sizes are expressed using two numbers, such as 14/23 or 19/26. These identify the nominal joint diameter and ground length in millimetres. The adapter is manufactured from BORO 3.3 glass, which offers low thermal expansion and resistance to many chemicals commonly encountered in laboratories. This makes it suitable for consideration in distillation, reflux and chemical synthesis procedures, provided the complete assembled apparatus is appropriate for the selected temperature, pressure and chemicals.

The clear glass construction allows users to inspect the internal passages and visually identify any visible residue or contamination before use. The two-neck configuration reduces the need to introduce additional branching components when a single apparatus requires two upper connections. Seven socket and cone combinations are available, allowing users to select a version that matches the ground glass joints already used in their laboratory. The 14/23 socket variations are offered with 14/23, 19/26, 24/29 and 29/32 base cones, providing several options for connecting smaller upper components to different receiving joints. The 19/26 socket variations are available with 19/26 and 24/29 base cones, while the largest option features 29/32 sockets and a matching 29/32 cone.

Each variation is supplied as one glass adapter per pack, allowing users to purchase the appropriate joint configuration individually. Safety Precautions: Inspect all ground glass joints for chips, cracks or damage before assembly. Support the connected apparatus with suitable clamps and stands. Never force a joint into an incompatible socket. For heated, vacuum or pressure applications, verify the complete assembly and use suitable joint-retention and sealing methods. Sealing Information: Ground glass joints can provide close-fitting connections when correctly matched and assembled. However, leakproof, airtight or vacuum-tight performance is not guaranteed by joint geometry alone and depends on the complete apparatus and operating conditions.

LabChoice Australia supplies BORO 3.3 laboratory glassware, ground glass adapters and scientific apparatus accessories for schools, universities, research laboratories and industrial facilities across Australia.