- 10 ml borosilicate volumetric flask
- Includes interchangeable polypropylene stopper (10/19)
- Class A
- Tolerance ±0.025 ml
- Made from high-quality 3.3 borosilicate glass
- Amber glass protects light sensitive materials
- Low temperature gradient – can withstand high temperatures and thermal shocks*
- Superior chemical durability*
- Complies with iso-1042
OVERVIEW:
GWSI 10 ml amber volumetric flasks with polyethylene stoppers provide specialized micro-volume light-protected precision for preparing ultra-concentrated stock solutions from extremely precious photosensitive materials. Made from amber borosilicate 3.3 glass, they block UV and visible light while delivering excellent chemical inertness, maximizing the utility of compounds available in sub-milligram quantities that also require absolute light protection. Each flask is NABL calibrated to meet stringent Class A tolerances, with white print markings for clear visibility—offering reliable accuracy for advanced research applications where every microgram of photolabile material is critically valuable.
HISTORY:
The 10 ml amber volumetric flask emerged as specialized analytical techniques required working with extremely limited sample quantities of highly photosensitive compounds, often isolated natural products or newly synthesized pharmaceutical candidates available only in microgram amounts and extremely prone to photodegradation. This minimal capacity allowed researchers to prepare precise light-protected stock solutions from precious materials that would be impossible to obtain in larger quantities and would degrade almost instantly under light exposure. The size became essential in cutting-edge drug discovery, rare natural product isolation, and advanced materials research where photolabile compounds are synthesized or isolated in sub-milligram batches requiring absolute protection.
APPLICATIONS:
– Pharmaceutical labs — preparing ultra-concentrated photosensitive stocks from newly synthesized drug candidates available in microgram quantities with extreme light sensitivity
– Biotech facilities — concentrated standards from rare isolated photosensitive compounds with extreme photolability, reagent preparation with precious light-degradable biological materials
– Clinical laboratories — preparing ultra-concentrated calibration standards for specialized research diagnostic methods with extremely photosensitive analytes requiring minimal volumes
– University teaching labs — advanced research demonstrations of specialized ultra-micro techniques with extremely light-sensitive precious materials
– College research groups— preparing concentrated photosensitive stocks from research compounds available in sub-milligram quantities with extreme light sensitivity
– School science labs — specialized demonstrations of ultra-micro light-protected preparation techniques for the most advanced students
– Industrial QC labs — preparing ultra-concentrated photosensitive standards from extremely costly or rare reference materials with extreme photolability
MANUFACTURING PROCESS:
GWSI manufactures 10 ml amber Class A volumetric flasks by melting amber borosilicate 3.3 glass at 1,650°C and forming the flat-bottom bulb, narrow neck, and precision-bore opening through skilled hand-blowing or precision automated molding. The amber coloration is achieved through precise addition of iron oxide and other metal oxides during melting to ensure consistent light-blocking properties. The neck is carefully drawn to exact dimensions ensuring Class A accuracy. The polyethylene stopper is precision-molded to match the flask opening for reliable sealing. The entire flask undergoes controlled annealing to eliminate internal stress.
SHORT TESTING PROCESS:
Manual inspection verifies wall thickness uniformity, neck dimensions, stopper fit, amber color consistency, and overall geometry on every flask. Automated polarization stress testing then scans the glass for residual strain that could affect dimensional stability. Each Class A flask undergoes NABL gravimetric calibration to verify the exact volume at the calibration mark meets Class A tolerances, with certification documentation provided for traceability and quality assurance.
PRINTING PROCESS:
The calibration mark, volume designation, temperature specification, and Class A identification are silkscreened onto the flask using white ceramic glass inks specifically formulated for visibility on amber glass. The flasks enter high-temperature kilns where ceramic glass fusing permanently bonds the white ink into the glass matrix. This creates high-contrast, durable markings that remain clearly legible against the dark amber background while resisting chemical attack and repeated cleaning.
PACKAGING PROCESS:
Final sorting removes any flasks with wall defects, neck irregularities, stopper fit issues, amber color inconsistencies, or surface blemishes. Approved flasks are individually wrapped with the polyethylene stopper inserted to prevent separation during shipping. They’re packed in heavy-duty double-wall corrugated boxes with shock-absorbing dividers, suitable for domestic distribution or international export to research laboratories requiring specialized ultra-micro light-protective glassware.
MAINTENANCE & SAFETY:
– Clean immediately after use with appropriate solvents or detergents; use specialized micro flask brushes for thorough interior cleaning without scratching
– Autoclave at 121°C / 15 psi with polyethylene stopper removed; the stopper has lower thermal tolerance than glass and should not be autoclaved
– Handle with extreme care to avoid impacts that could affect calibration accuracy; the compact size requires very precise manipulation during filling
– Store upright with polyethylene stopper in place to prevent contamination and light exposure; the 10 ml size is ideal for secure storage in specialized analytical workstations
– Calibrate periodically according to laboratory quality procedures; NABL recalibration services maintain traceability
– Fill to the calibration mark at eye level with the meniscus bottom tangent to the white mark for accurate 10 ml volume measurement
*Manufactured by GWSI Glass Lab — Ambala, Haryana, India (The Science City)