The Laboratory Graduated Flasks category supports laboratories that need to measure, dispense, aspirate, pump and route liquids accurately between vessels, instruments and process steps. The range spans routine bench requirements and more specialised applications where material choice, control and repeatability become especially important.
Volume error, unsuitable wetted materials, trapped air and poor connections can affect concentration, recovery and repeatability. A well-matched setup balances liquid viscosity and chemistry, wetted materials, connection size, and manual or automated control, helping the laboratory avoid unnecessary rework, difficult cleaning or premature replacement.
The complete fluid path should match the required volume or flow range, liquid properties, tubing and connection sizes, control method and cleaning approach. When each stage is matched correctly, laboratories in analytical, life-science, chemistry, process-development and quality-control laboratories can work more consistently and manage changeovers, replenishment and maintenance with fewer interruptions. As part of the Laboratory Liquid Handling Equipment range, these products can be selected with the equipment and consumables used before and after this stage.
Our Laboratory Graduated Flasks Range
Our collection covers autoclave plastic graduated flasks, when to use amber graduated flasks, class a and class b flasks, and graduated flasks accessories and workflow integration, giving laboratories practical choices for routine work and more specialised applications.
Autoclave plastic graduated flasks
Flasks made from PMP (Polymethylpentene), such as those from Kartell, are typically autoclavable at 121°C without affecting their volumetric accuracy. Key differences are usually found in liquid viscosity and chemistry, wetted materials, and connection size. These details affect day-to-day usability as much as the main performance specification. This is especially valuable when teams need to move liquids with the control and compatibility needed from initial preparation through final dispensing. Consistent handling also reduces the risk of variation between batches or operators.
When to 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. Key differences are usually found in wetted materials, connection size, and manual or automated control. These details affect day-to-day usability as much as the main performance specification. This is especially valuable when teams need to move liquids with the control and compatibility needed from initial preparation through final dispensing. Consistent handling also reduces the risk of variation between batches or operators.
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. For routine and specialised work, assess connection size, manual or automated control, and volume or flow range. Matching these points early helps avoid adapters, consumables or operating limitations being discovered after purchase. Used correctly, this part of the range helps laboratories move liquids with the control and compatibility needed from initial preparation through final dispensing. The result is a setup that is easier to train, document and maintain.
Laboratory Graduated Flasks accessories and workflow integration
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. Before ordering, compare manual or automated control, volume or flow range, and accuracy and precision. A product that fits the complete workflow will generally be easier to validate, maintain and reorder. Used correctly, this part of the range helps laboratories move liquids with the control and compatibility needed from initial preparation through final dispensing. The result is a setup that is easier to train, document and maintain.
Featured Brands
DWK Life Sciences is known for laboratory glassware, bottles and precision handling products, BRAND is known for liquid-handling products, volumetric labware and supporting accessories, VITLAB is known for plastic labware, dispensing products and chemical-resistant handling solutions, and Gilson is known for pipettes, automated liquid handling and fluid-transfer equipment. Compare each brand by liquid viscosity and chemistry, wetted materials, connection size, and manual or automated control, and check what is included with the product so the complete setup is clear before ordering.
Why Choose LabFriend for Laboratory Graduated Flasks
LabFriend helps laboratories source laboratory graduated flasks with the performance, compatibility and supporting items required for the application. Our team can discuss liquid viscosity and chemistry, wetted materials, connection size, and manual or automated control, including details that are easy to overlook when building a new workflow or replacing an older product. The online store combines competitive pricing, transparent lead times and dependable UK-wide delivery across equipment and consumables.
Explore laboratory graduated flasks as part of the complete laboratory liquid handling and fluid transfer process rather than as a stand-alone purchase. Useful related areas include Laboratory Graduated Pipettes and Laboratory Measuring Cylinders, which can help complete the surrounding workflow. This approach helps laboratories align equipment, consumables and accessories while retaining the convenience of one online order and dependable delivery across the UK. Add items to your cart and select Instant Quote.
Frequently Asked Questions
Can I autoclave plastic graduated flasks?
Flasks made from PMP (Polymethylpentene), such as those from Kartell, are typically autoclavable at 121°C without affecting their volumetric accuracy. The final choice should reflect accuracy and precision, liquid viscosity and chemistry, and wetted materials, as these points influence day-to-day compatibility and repeatability.
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. The final choice should reflect accuracy and precision, liquid viscosity and chemistry, and wetted materials, as these points influence day-to-day compatibility and repeatability.
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. The final choice should reflect accuracy and precision, liquid viscosity and chemistry, and wetted materials, as these points influence day-to-day compatibility and repeatability.
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. For graduated flasks, also check accuracy and precision, liquid viscosity and chemistry, and wetted materials so the product fits the complete procedure.
Which specifications matter most when comparing graduated flasks?
The most important points are accuracy and precision, liquid viscosity and chemistry, wetted materials, and connection size. Laboratories should also consider how the item will be stored, prepared, cleaned and replaced over its working life. The final choice should reflect accuracy and precision, liquid viscosity and chemistry, and wetted materials, as these points influence day-to-day compatibility and repeatability.
