Ensuring absolute precision in solution preparation requires high-quality volumetric glassware designed for exact liquid measurement. Professional laboratory graduated flasks, often referred to as volumetric flasks, are calibrated "to contain" specific volumes at a standard temperature. As a fundamental part of our liquid handling and volumetric apparatus ecosystems, these flasks are essential for creating the accurate reagents used in titration and analytical testing.
Why Choose Professional Graduated Flasks?
Our curated collection of volumetric glassware is engineered for chemical resistance and strict technical compliance:
- High-Accuracy DURAN® Glass: We stock Hirschmann Volumetric Flasks made from premium DURAN® Class A glass, featuring NS ground joints and batch certificates for analytical traceability.
- Light-Sensitive Protection: Utilize Hirschmann Amber Glass Flasks (Class A) to protect sensitive reagents from UV degradation while maintaining precise volume control.
- Durable Plastic Alternatives: Explore Kartell PMP/TPX Volumetric Flasks, which are highly transparent, autoclavable, and provide a shatter-resistant alternative to glass for field or high-traffic use.
- Versatile Capacity Range: Find the ideal size for any protocol, with flasks ranging from micro-volumes of 1 mL and 2 mL up to large-scale 400 mL and beyond.
LabFriend supplies graduated flasks from world-renowned manufacturers of high-precision laboratory hardware:
- Hirschmann: The premier provider for high-end volumetric glassware, offering both clear and amber DURAN® flasks with various NS joint sizes.
- ISOLAB: Specialist in robust, high-quality glass flasks (Class A) featuring chemical-resistant blue or white graduations and PE stoppers.
- Kartell: Leading manufacturer of laboratory plastics, providing durable PMP flasks that meet Class A tolerances.
- BRAND & DWK Life Sciences: Global leaders in volumetric measurement, supplying the industry-standard flasks used in research and quality control labs.
Precise solution preparation is the first step in a reliable analytical workflow; to further enhance your laboratory system, we recommend exploring these related categories:
- Volumetric Pipettes: Use Hirschmann Class A pipettes for secondary transfers of the precise volumes prepared in your flasks.
- Bottletop Dispensers: Utilize BRAND Dispensette S for safe, rapid dispensing of solvents directly into your graduated flasks.
- Microlitre Pipettes: Explore Eppendorf or LLG pipettors for adding micro-volume concentrated solutes to your flasks.
- Titrators: Use BRAND or SI Analytics systems to analyze the accurate solutions you have prepared.
Unsure if your protocol requires a Hirschmann Class A DURAN flask or an autoclavable Kartell plastic version? Our team provides local technical support to help you find the correct volumetric solution with fast shipping and competitive pricing.
Frequently Asked Questions
1. What is the difference between Class A and Class B flasks?
Class A flasks are manufactured to the highest accuracy standards with the tightest tolerances, often including a batch certificate, while Class B flasks have wider tolerances and are suitable for general educational or less critical use.
2. Why do some flasks have "NS" ground joints?
NS (Normal Standard) joints allow the flask to be securely sealed with a matching glass or PE stopper, preventing evaporation or contamination of the solution inside.
3. Can I autoclave plastic graduated flasks?
Yes, flasks made from PMP (Polymethylpentene), such as those from Kartell, are typically autoclavable at 121°C without affecting their volumetric accuracy.
4. When should I use amber graduated flasks?
Amber glass is essential when working with light-sensitive chemicals, such as silver nitrate or certain vitamins, as it filters out UV and short-wavelength light that could cause the chemicals to decompose.
