Custom Quartz Stirring Rods

Component	Available Options	Manufacturing Capability
Shaft diameter	4–12 mm typical	Straight solid quartz rod
Finished length	150–600 mm typical	Cut and formed as one-piece or joined assembly
Paddle / blade width	15–40 mm typical	Flat, angled or custom hot-formed outline
Working end	Plain, paddle, blade or loop	Flame formed with smooth shaft transition
Connection	Plain handle, ring handle or ground joint	Hot formed or quartz-welded construction
Material	Fused quartz	Chemical-resistant process-contact surface
Thermal finish	Fire-finished and annealed as appropriate	Applied after forming and welding
Finished product	Manual stirrer, reactor stirrer or replacement assembly	Length, alignment, joint fit and appearance inspection

Inquiry

Quartz stirring rods combine a solid shaft with a working end designed for laboratory mixing, heated reactors and high-purity chemical processes. Typical shaft diameters are 4–12 mm with finished lengths of 150–600 mm. Plain rods, paddles, blades, loops, ring handles and ground-joint connections are available.

Unlike a standard cut rod, the mixing end is flame formed or welded as part of the component. Paddle shape, shaft alignment, joint geometry and annealing determine how the finished stirrer fits and performs inside the vessel.

Quartz Stirring Rod Designs

Plain Stirring Rods

Straight rods with rounded or fire-polished ends for manual stirring, decanting assistance and general laboratory handling.

Plain shaft
Rounded end
Ring handle

Flat Paddle Stirrers

A broad flat working end moves liquid across a larger area. Typical paddle widths of 15–40 mm are available in proportion to the shaft and vessel.

Rectangular paddle
Rounded paddle
Single or double blade

Angled Blade and Loop Ends

Angled blades increase circulation, while loop and rounded-frame ends provide gentler mixing with fewer sharp corners.

Angled blade
Open or closed loop
Custom formed outline

Ground-Joint Stirring Assemblies

Male or female ground joints integrate the stirrer with a closed flask or reactor. U.S.-style and ISO/DIN joint series are produced as separate systems.

Male joint shaft
Female connection
Custom sealing interface

Hot-Working and Finishing Capabilities

Stirring rods are produced as complete glass assemblies. Shaft, working end and connection are processed together so the finished geometry remains aligned.

Shaft Cutting and Preparation

Round quartz rod is selected for the finished length and working-end load, then cut and prepared for forming or joining.

4–12 mm typical shaft diameter
150–600 mm typical finished length
Plain or jointed upper end

Output: straight shaft blanks prepared for hot work

Paddle, Blade and Loop Forming

Quartz is heated and shaped into the required mixing geometry. Forming creates smooth transitions between the shaft and working end.

Flat and angled paddles
Loops and rounded frames
Custom blade outlines

Output: working ends matched to vessel clearance and mixing style

Quartz Welding and Joint Work

Ground joints, handles and multi-piece working ends can be flame welded to the shaft. Alignment is controlled during the joining operation.

Ground-joint connections
Ring handles
Reinforced or multi-part ends

Output: integrated stirrer and vessel connection

Annealing and Fire Finishing

The completed assembly is annealed after hot work and fire-finished to remove sharp edges and improve the transition surface.

Stress-relief annealing
Fire-polished edges
Final alignment inspection

Output: clean finished quartz stirring assembly

Working-End Comparison

Working end	Mixing behavior	Typical equipment
Plain rounded rod	Gentle manual stirring and simple liquid handling	Beakers, dishes and open laboratory vessels
Flat paddle	Moves a broader liquid area at low to moderate speed	Flasks, tanks and general reactors
Angled blade	Creates stronger directional circulation	Custom reactors and controlled mixing assemblies
Loop or frame	Gentle circulation with a rounded contact profile	Sensitive samples and specialized laboratory vessels
Ground-joint assembly	Supports mixing through a defined closed-vessel connection	Photochemical, heated and sealed reactor systems

Reactor and Vessel Integration

Quartz stirring rods can be matched to beakers, flasks, cells and custom reactors. The shaft length positions the paddle at the required working depth, while the blade width and orientation determine clearance from the vessel wall. Jointed versions integrate with laboratory glassware without adding a metal process-contact part.