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Volumetric Flask, Class-A, Batch Certificate, ISO

The Volumetric Flask, Class-A, Batch Certificate, ISO is an essential precision volumetric measuring instrument engineered for high-accuracy liquid preparation and quantitative chemical analysis. Manufactured from high-grade BORO 3.3 borosilicate glass, this clear glass volumetric flask provides exceptional chemical durability and thermal resistance. Designed in strict compliance with ISO standards, each flask features a single sharp graduation line calibrated “In” (to contain) to guarantee exact liquid volumes, along with a newly designed ergonomic polypropylene (PP) stopper fitted into a precision ground joint. It is ideal for preparing standard solutions, precise dilutions, and critical analytical assays across analytical chemistry, clinical diagnostics, and material testing laboratories. Suitable for pharmaceutical, biotechnology, environmental analysis, petrochemical, and academic research industries. Supplied by Edulabs.

Storage Instructions

  • Store upright in original protective packaging or dedicated laboratory glassware shelving to prevent accidental impact.

  • Keep in a clean, dry, and dust-free environment to avoid contamination of the internal surfaces and ground joints.

  • Store ground glass joints with stoppers separated or with paper strips inserted between the joint and stopper to prevent seizure.

  • Ensure storage temperature remains consistent and avoid placing glassware near direct radiant heat sources.

  • Avoid stacking flasks directly on top of each other without padded dividers.

  • Keep stoppers in designated organizer trays sorted by ground joint size to prevent accidental misfitting.

Safety Information

  • Inspect each flask thoroughly for hairline cracks, chips, or surface scratches before every use; never heat or pressurize compromised glassware.

  • Wear appropriate personal protective equipment (PPE), including safety goggles, laboratory coat, and chemical-resistant gloves, during operation.

  • Avoid sudden, extreme thermal changes (thermal shock) to prevent glass stress or structural fracture.

  • Handle ground glass joints carefully without applying force to avoid joint seizure or breakage.

  • Do not apply direct open flame or heavy localized heating directly to volumetric flasks, as this can permanently distort calibration accuracy.

  • Wash thoroughly with non-abrasive detergents and deionized water using appropriate soft glassware brushes to avoid scratching inner walls.

  • Ensure liquid meniscus is aligned at eye level on a flat, stable surface to prevent parallax errors and spills during filling.

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The Volumetric Flask, Class-A, Batch Certificate, ISO represents a standard in laboratory volumetric measurement, providing unmatched accuracy for analytical procedures where precise concentration control is crucial. Designed specifically for preparing standard solutions, volumetric titrations, and precise volumetric dilutions, this clear glass flask is an indispensable tool across modern laboratory environments.

Engineered with high-grade BORO 3.3 borosilicate glass, the flask delivers outstanding resistance against aggressive chemical reagents, acids, alkalis, and organic solvents. The low coefficient of thermal expansion inherent to borosilicate glass ensures high dimensional stability under varying laboratory temperatures, maintaining calibration integrity over repeated long-term use.

Each flask features a single, distinct graduation mark permanently etched onto the narrow neck, allowing high readability and pinpoint meniscus alignment. Calibrated based on the poured-in volume (“In”), it ensures that the exact nominal volume stated is contained within the vessel at the standard reference temperature. The precision-crafted ground glass joint is equipped with a newly designed ergonomic polypropylene (PP) stopper, offering a tight, leak-proof seal during inversion mixing while minimizing wrist strain during repetitive handling.

Manufactured in full conformity with rigorous ISO standard parameters for Class-A volumetric glassware, every batch comes with batch work certification to support quality assurance protocols, ISO compliance, and audit requirements. This rigorous quality standard makes the flask a trusted component in regulated testing environments.

Whether performing critical chemical synthesis, analytical chromatography preparation, or standardizing solutions in quality control workflows, this volumetric flask provides consistent performance and high reliability. Edulabs delivers this Class-A volumetric flask with precision craftsmanship to meet the rigorous demands of global scientific, industrial, and educational institutions.

Key Features

  • Premium BORO 3.3 clear borosilicate glass construction for high durability.

  • Class-A volumetric accuracy compliance in accord with ISO international standards.

  • Calibrated “In” (to contain) for accurate liquid volume measurement.

  • Individual batch work certified to support quality audits and lab compliance.

  • Single, high-visibility permanent graduation mark etched on the neck.

  • Ergonomic polypropylene (PP) stopper for secure handling and leak-proof sealing.

  • Precision ground joint ensuring tight fitting and zero sample contamination.

  • Excellent resistance to severe thermal changes and chemical exposure.

  • Smooth non-porous interior surfaces to prevent chemical retention.

  • Designed for long service life across rigorous analytical workflows.

Technical Specifications

Parameter Specification
Product Name Volumetric Flask, Class-A, Batch Certificate, ISO
Material BORO 3.3 Borosilicate Glass / Polypropylene (Stopper)
Standard ISO / Class-A
Calibration Calibrated “In” (To Contain)
Certification Batch Work Certified
Construction Clear glass, single graduation mark, ground joint with PP stopper
Chemical Resistance High resistance to acids, alkalis, and organic solvents
Application Volumetric solution preparation and analytical testing
Grade Laboratory Grade / Class-A

Available Models

Item Code Capacity (ml) N/S Tolerance (+_ml) Pack of
SL.1200.18 5 10/19 0.04 2
SL.1200.19 10 10/19 0.04 2
SL.1200.20 20 10/19 0.04 2
SL.1200.21 25 10/19 0.04 2
SL.1200.22 50 12/21 0.06 2
SL.1200.23 100 14/23 0.1 2
SL.1200.24 200 14/23 0.15 2
SL.1200.25 250 14/23 0.15 2
SL.1200.26 500 19/26 0.25 2
SL.1200.27 1000 24/29 0.4 2
SL.1200.28 2000 29/32 0.6 1
SL.1200.29 5000 34/35 1.2 1
SL.1200.30 10000 34/35 2.5 1

Applications

  • Preparation of accurate primary and secondary standard chemical solutions.

  • Quantitative chemical analysis and titrimetric testing procedures.

  • Sample dilution for HPLC, GC, and UV-Vis spectrophotometry analysis.

  • Formulation of reagents and working standards in quality control labs.

  • Analytical chemistry practical training in university and academic laboratories.

  • Batch sampling and assay preparations in pharmaceutical testing.

  • Water purity and environmental pollutant quantification routines.

  • Quality verification assays in food, beverage, and dairy processing.

  • Diagnostic reagent prep in clinical and medical testing environments.

  • Research and development workflows in chemical synthesis facilities.

Note

Edulabs also offers a comprehensive range of laboratory glassware, laboratory plasticware, laboratory chemicals, laboratory instruments, laboratory equipment, scientific apparatus, educational laboratory equipment, and customized laboratory solutions for educational institutions, research laboratories, pharmaceutical industries, healthcare facilities, biotechnology laboratories, environmental testing laboratories, food and beverage laboratories, and industrial quality control laboratories. Contact Edulabs for bulk orders and OEM requirements.

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