Condenser Allihn with Screw Thread Connectors
- Made from with ASTM E-438, Type-1, Class A, Boro 3.3 Glass.
- Complies with DIN 12581.
- Ideal for reflux and comes with Plastic Screw Thread Connector.
Cat. No. Ground Joint Effective length (mm) Connector Pack of Socket Cone – 19/26 200 Screw Thread 1 – 24/29 200 Screw Thread 1 – 29/32 200 Screw Thread 1 – 34/35 200 Screw Thread 1 – 40/38 200 Screw Thread 1 – 50/42 200 Screw Thread 1 – 50/42 250 Screw Thread 1 19/26 19/26 200 Screw Thread 1 24/29 24/29 200 Screw Thread 1 19/26 19/26 300 Screw Thread 1 24/29 24/29 300 Screw Thread 1 24/29 24/29 400 Screw Thread 1 24/29 24/29 500 Screw Thread 1 34/35 34/35 500 Screw Thread 1 34/35 34/35 600 Screw Thread 1 34/35 34/35 750 Screw Thread 1
OVERVIEW:
GWSI Glass Lab manufactures Allihn condensers with screw thread connectors from premium borosilicate 3.3 glass. The internal bulb design maximizes cooling surface area for efficient reflux and distillation. Built for thermal and chemical durability, they deliver high thermal shock resistance, full chemical inertness, and hydrolytic resistance. Every condenser is I.S.O. DIN, NABL calibrated for consistent performance.
HISTORY:
The Allihn condenser was developed in the 19th century by German chemist Felix Allihn, who added internal glass bulbs to increase cooling surface area beyond simple tube designs. GWSI modernizes this classic with screw thread connectors for secure, leak-free assembly, borosilicate 3.3 durability, ceramic glass fusing, and autoclavable lab glass reliability.
APPLICATIONS:
* Pharmaceutical reflux and distillation processes
* Biotech and analytical chemistry laboratories
* School, college, university, and educational institutes
* Industrial quality control and research labs
* High-efficiency condensation with secure threaded connections
MANUFACTURING :
We melt high-purity borosilicate 3.3, shape the condenser tube with internal bulbs through master hand-blowing or automated molding, apply ceramic glass fusing to screw thread connectors and interchangeable ground joints, and complete controlled annealing to fully eliminate thermal stress.
TESTING PROCESS :
Every condenser receives manual polariscope stress testing for zero residual stress, followed by high-precision ISO, DIN standard verification — manual or automatic testing machine — and NABL gravimetric calibration where applicable.
PRINTING PROCESS :
Graduations and markings are applied by precision screening with ceramic glass enamels, baked in high-temperature kilns to permanently fuse the scale into the borosilicate 3.3 matrix so it never fades.
PACKAGING PROCESS :
We perform cosmetic sorting to filter out any blemishes, verify screw thread connector alignment, and pack in heavy-duty double-wall boxes with shock-absorbing bubble wrap for safe export from Ambala, the Science City.
MAINTENANCE & SAFETY :
* Autoclavable lab glass: sterilize at 121 °C with screw thread connectors loose.
* Clean with non-abrasive detergents; protect threads and glass bulbs from chips or abrasion.
* Confirm hydrolytic resistance before prolonged exposure to acidic or basic vapors.
* Store vertically in a stable rack away from direct heat sources.
* Inspect for polarization stress before high-thermal-shock cycles.