- Compliance with DIN/ISO 4788.
- With individual Class ‘A’ Certificate.
- Made from high-quality 3.3 borosilicate glass
- Hexagonal base for stability
- Low temperature gradient – can withstand high temperatures and thermal shocks*
- Superior chemical durability
OVERVIEW:
GWSI Glass Lab manufactures this compact 1000 ml hexagonal measuring cylinder from premium borosilicate 3.3 glass with Class A volumetric accuracy. Designed for precise microscale measurement, it delivers high thermal shock resistance, full chemical inertness, and hydrolytic resistance. Every cylinder is I.S.O. DIN, NABL calibrated for absolute reliability.
HISTORY:
Small-capacity hexagonal measuring cylinders with Class A precision were developed for pharmaceutical microscale work in the early 20th century. The hexagonal base prevents tipping during small-volume filling. GWSI modernizes this format with borosilicate 3.3 strength, ceramic glass fusing for scale markings, and autoclavable lab glass reliability.
APPLICATIONS:
* Pharmaceutical microscale formulation and measurement
* Biotech and small-volume analytical laboratories
* School, college, university, and educational institutes
* Industrial quality control and microscale research
* Precise liquid dispensing at 1000 ml with Class A accuracy
MANUFACTURING PROCESS:
We melt high-purity borosilicate 3.3, shape the 1000 ml cylinder with a hexagonal base via master hand-blowing or automated molding, apply ceramic glass fusing to markings, and complete controlled annealing to fully eliminate thermal stress.
TESTING PROCESS:
Every cylinder 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 for Class A accuracy.
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 hexagonal base stability, 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 before reuse.
* Clean gently with non-abrasive detergents; avoid impact to the hexagonal base and glass walls.
* Confirm hydrolytic resistance before measuring acidic or alkaline microsamples.
* Store upright in a stable rack away from direct heat sources.
* Inspect for polarization stress before high-thermal-shock cycles.