Condenser Liebig
- Compliance with DIN 12576 / Drip Tip.
- Interchangeable Inner & Outer Joints.
- Made From Heat Resistant, Low Expansion 3.3 Borosilicate Glass
Cat. No. Ground Joint Effective Length (mm) Connector Pack of Socket Cone 14/23 14/23 150 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 19/26 19/26 350 Screw Thread 1 24/29 24/29 350 Screw Thread 1 19/26 19/26 400 Screw Thread 1 24/29 24/29 400 Screw Thread 1 24/29 24/29 500 Screw Thread 1 24/29 24/29 600 Screw Thread 1 24/29 24/29 750 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 34/35 34/35 900 Screw Thread 1 – 19/26 300 Screw Thread 1 – 24/29 350 Screw Thread 1 – 34/35 250 Screw Thread 1 29/32 29/32 250 Screw Thread 1 29/32 29/32 400 Screw Thread 1
OVERVIEW:
GWSI Glass Lab manufactures Liebig condensers from premium borosilicate 3.3 glass with a straight inner tube and water jacket for efficient reflux cooling. 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 analytical performance.
HISTORY:
The Liebig condenser was invented in the mid-19th century by German chemist Justus von Liebig, who created a simple straight-tube design with an outer cooling jacket to improve vapor condensation efficiency. GWSI modernizes this classic with borosilicate 3.3 durability, ceramic glass fusing, interchangeable ground joints, 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
* Continuous cooling and reflux studies
MANUFACTURING PROCESS:
We melt high-purity borosilicate 3.3, form the straight tube and outer jacket through master hand-blowing or automated molding, apply ceramic glass fusing to 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 tube and jacket 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 joints fully open.
* Clean with non-abrasive detergents; protect interchangeable ground joints and glass surfaces from chips.
* 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.