Consumables

The Premium Borosilicate Glass Type C Sleeve (also widely referred to as a Stirrer Guide Sleeve or Thermometer Pocket) is a highly versatile and durable laboratory glass adapter designed for standard-pressure chemical setups. This specialized glass sleeve features a standard ground joint that couples securely with multi-neck flasks, adapters, or reactors, while its slender upper stem is optimized for guiding stir rods or enclosing thermometer sensors.

When utilized in stirring setups, the sleeve serves as a reliable guide: a flexible rubber tube can be wrapped tightly around the upper stem and the stirring shaft, providing a smooth and stabilized rotation during liquid mixing. Sourced from high-performance glass with high hardness and an elegant, polished finish, this sleeve delivers the structural integrity and precise standard compliance required in academic research, organic synthesis, and industrial quality control setups.

Precision Standard Ground Joint: Features high-precision, standard tapered frosted joints (14/23, 19/26, 24/29, 29/32) that ensure an airtight and vapor-tight fit when inserted into multi-neck reaction flasks, preventing vacuum or pressure loss during laboratory reactions.

Premium Borosilicate Glass: Crafted from high-strength, premium-grade borosilicate glass with low thermal expansion. It provides exceptional resistance to high temperatures, thermal shock, and aggressive chemical reagents, ensuring long-term durability.

High Transparency & Optical Clarity: Offers outstanding optical clarity and transparency, allowing researchers to easily observe the movement of the internal stirring rod or the placement of the thermometer probe.

Sleek & Seamless Construction: Designed with a smooth, highly polished outer surface and a seamless transition between the upper stem and the joint, facilitating effortless cleaning and reducing mechanical friction.

Convenient Stirrer Adaptability: Designed for optimal versatility. When used as a stirrer guide, a flexible rubber tubing connector can be wrapped over the upper stem and connected directly to a stirring rod, offering smooth and convenient operation under atmospheric pressure.

Technical Specifications