Chromatography Columns with Reservoir and Straight Bore Glass Stopcock
- Manufactured from Borosilicate Glass.
- Printed in Anti Acid Blue/White Colour.
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CAT NO I.D. x O.D. (mm) Effective Length (mm) Reservoir Cap (ml) Pack Of 20×24 200 100 1 20×24 300 100 1 20×24 375 100 1 20×24 450 100 1 24×28 250 250 1 24×28 300 250 1 24×28 375 250 1 24×28 450 250 1 24×28 600 250 1 30×34 300 500 1 30×34 375 500 1 30×34 450 500 1 30×34 600 500 1 30×34 750 500 1 45×50 450 1000 1 45×50 600 1000 1 45×50 750 1000 1 45×50 900 1000 1 45×50 1000 1000 1 55×60 600 2000 1 55×60 750 2000 1 55×60 900 2000 1 55×60 600 3000 1 55×60 750 3000 1 55×60 900 3000 1
OVERVIEW:
GWSI Glass Lab manufactures chromatography columns with a reservoir and straight bore glass stopcock from premium borosilicate 3.3 glass. Designed for reliable separation with convenient mobile phase storage, they deliver high thermal shock resistance, full chemical inertness, and hydrolytic resistance. Every column is I.S.O. DIN, NABL calibrated for consistent analytical performance.
HISTORY:
Chromatography columns with reservoirs and glass stopcocks developed to allow continuous mobile phase supply without frequent refilling, simplifying long-duration separation runs. GWSI modernizes this practical design with borosilicate 3.3 durability, ceramic glass fusing, interchangeable ground joints, and autoclavable lab glass reliability for modern laboratories.
APPLICATIONS:
* Pharmaceutical compound isolation and purification
* Biotech and analytical separation laboratories
* School, college, university, and educational institutes
* Industrial quality control and research labs
* Extended chromatography runs requiring reservoir supply
MANUFACTURING PROCESS:
We melt high-purity borosilicate 3.3, form the column tube and reservoir 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 column 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 volumetric measurement applies.
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 PROCES
We perform cosmetic sorting to filter out any blemishes, pair the column with its straight bore glass stopcock securely, 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 the glass stopcock fully open.
* Clean with non-abrasive detergents; protect interchangeable ground joints, reservoir, and glass surfaces from chips.
* Confirm hydrolytic resistance before prolonged use with acidic or basic mobile phases.
* Store vertically in a stable rack away from direct heat sources.
* Inspect for polarization stress before high-thermal-shock cycles.