When precision matters in your laboratory work, ordinary glassware just won't cut it. These 5ml volumetric flasks are engineered for researchers and scientists who demand accuracy in every measurement, whether you're working on critical experiments, quality control testing, or educational demonstrations.
Manufactured from high-quality inert 3.3 borosilicate glass, these flasks offer superior chemical resistance and thermal stability that outperform standard laboratory glassware. The special borosilicate composition means these flasks won't react with most acids and alkaline solutions, ensuring your measurements remain uncontaminated and accurate throughout your work.
Each flask carries Class A certification, meeting stringent tolerance requirements established by ASTM E-694, ASTM E-542, and ASTM E-288 standards. The calibration is based on poured-in volume ("In") at +20°C reference temperature, conforming to ISO 1042 Laboratory Glassware specifications. This means you can trust these flasks to deliver consistent, repeatable results that meet the highest laboratory standards.
The flat-bottom design provides stability on any flat surface, while the ground stopper ensures an airtight seal when storing solutions. Each flask features one permanent circular mark for easy volume identification, with calibration markings printed using fused-on enamel color that won't wear off with regular use. The 5ml capacity makes these perfect for precise measurement of smaller volumes commonly needed in chromatography, titration, and solution preparation.
Whether you're setting up a new lab, replacing outdated equipment, or stocking your educational institution, these volumetric flasks deliver the reliability and precision your work demands. The pack of two gives you the flexibility to work with multiple solutions simultaneously while maintaining consistency across your experiments.
