Product

Condensers Double Surface

• Made From Heat Resistant Low Expansion 3.3 Borosilicate Glass.
• Comes with Plastic Screw Thread Connector.
• Highly efficient with a large cooling surface.
• Suitable for Distillation & Reflux applications

OVERVIEW: 
GWSI Glass Lab manufactures double surface condensers from premium borosilicate 3.3 glass for enhanced cooling efficiency in 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 analytical performance.

HISTORY:
Double surface condensers were developed to increase cooling surface area and improve condensation efficiency over single-wall designs, solving the problem of inadequate vapor cooling in high-throughput reactions. 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-throughput distillation
* Biotech and analytical chemistry laboratories
* School, college, university, and educational institutes
* Industrial quality control and research labs
* Reactions requiring maximum condensation efficiency

 MANUFACTURING PROCESS:
We melt high-purity borosilicate 3.3, form the double-wall condenser tube through master hand-blowing or automated molding, apply ceramic glass fusing to interchangeable ground joints and inner surfaces, 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, confirm double-wall integrity 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 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.