Condenser Coil with Screw Thread Connectors (Graham Condenser)
- Complies with ASTM E-438, Type-1, Class A, Boro 3.3 Glass.
- Comes with Plastic Screw Thread Connector.
- Highly efficient with a large cooling surface.
- Suitable for Distillation & Reflux applications
- Condenser Coil with Screw Thread Connectors (Graham Condenser)
Cat No. Socket Size Cone Size Effective Length
(mm)Approx.
OD (mm)Pack Unit 14/23 14/23 150 38 1 19/26 19/26 200 38 1 19/26 19/26 250 38 1 24/29 24/29 250 38 1 19/26 19/26 300 38 1 24/29 24/29 300 38 1 24/29 24/29 400 38 1 24/29 24/29 500 38 1 34/35 34/35 500 38 1
OVERVIEW :
GWSI Glass Lab manufactures coil condensers from premium borosilicate 3.3 glass with a coiled inner tube for maximum cooling surface. Built for efficient reflux and condensation, 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:
Coil condensers were developed in the 19th century to increase cooling efficiency by extending the vapor path through a coiled tube within the water jacket. GWSI modernizes this design with borosilicate 3.3 durability, ceramic glass fusing, interchangeable ground joints, and autoclavable lab glass reliability for modern laboratories.
APPLICATIONS:
* Pharmaceutical reflux and high-efficiency distillation
* Biotech and analytical chemistry laboratories
* School, college, university, and educational institutes
* Industrial quality control and research labs
* Continuous cooling and condensation studies
MANUFACTURING PROCESS:
We melt high-purity borosilicate 3.3, form the coiled 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 coil tube and joint 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 coil tube from impact.
* 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.