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Measuring flasks for precise liquid measurement and solution preparation

Measuring flasks with a characteristic shape are the foundation of any laboratory, as they enable precise preparation of solutions. By choosing class A or B cookware with capacities ranging from 1 ml to 5 litres, you can be sure of reproducible results. Class A products are supplied with an individual series certificate, which confirms their high quality of workmanship.

These professional volumetric flasks are distinguished by:

• the use of borosilicate glass, which gives them excellent thermal resistance,
• protection of photosensitive substances in orange variants,
• compliance with the international standard DIN EN ISO 1042,
• High stability thanks to trapezoidal cookware geometry.

For greater safety, it is worth considering models made of durable polymers (PMP, PP), which are resistant to breakage. Tight closures in the form of caps or caps allow for the safe mixing and storage of chemicals.

Class A and B glass measuring flasks with series certification

Choosing the right standard of laboratory vessels is a key step in ensuring the reliability of the conducted tests. While Class A offers the highest precision necessary for specialized analyses, Class B is perfect for everyday laboratory work. For professionals who require full documentation, we have prepared glass with individual certificates that confirm the parameters of a particular piece.

Our products are distinguished by the following advantages:

• legible scale in blue or brown,
• precise determination of fluid meniscus,
• Repeatability of results as the foundation of titration.

Borosilicate glass and orange flasks for photosensitive substances

Borosilicate 3.3 glass is the foundation of laboratory equipment around the world, synonymous with reliability and durability. This material is characterized by exceptional resistance to aggressive chemicals and thermal shock, which significantly increases work safety in difficult conditions. Thanks to their low thermal expansion, these vessels retain their structure even under rapid temperature fluctuations.

For reagents that are sensitive to light, orange dishes are the optimal solution. The special color of the glass effectively blocks UV radiation, protecting the contents from photodegradation and loss of their original properties.

Properly selected laboratory equipment provides users with numerous advantages:

• high resistance to concentrated acids and alkalis,
• exceptional resistance to rapid changes in ambient temperature,
• effective protection of photosensitive substances against UV radiation,
• increased durability and less susceptibility to mechanical cracks,
• guarantee of precision and stability of stored solutions.

Chemical resistant PMP, PE and PP measuring flasks

By choosing  plastic laboratory dishes, you get a safe and almost indestructible alternative to traditional glassware. Models made of PMP impress with their crystalline clarity, and at the same time easily withstand sterilization at high temperatures, up to 170°C. Polypropylene, on the other hand, is a proven material for class B cookware, combining durability with a wide selection of capacities – from 10 ml to 2 liters.

Our range also includes variants made of polyethylene (PE) and extremely resistant PFA.  The former, available in precision class A, are extremely light and accurate, while PFA is a solution for special tasks, coping with the most aggressive chemicals.

The key advantages of polymer cookware include:

• exceptional resistance to breakage and cracking,
• thermal resistance allowing for work in difficult conditions,
• the highest measurement precision in selected models,
• resistance to strong reagents,
• the possibility of choosing between a traditional stopper and a tight cap.

Calibration line and compliance with DIN EN ISO 1042

The precision of laboratory measurements is based on rigorous gravimetric calibration at 20°C. The key element is the lower meniscus arch, which must be in perfect contact with the line on the neck of the vessel. The DIN EN ISO 1042 standard sets limit errors for Class A glass and PMP plastics, which ensures full reproducibility of results. When working with aggressive chemicals, it is worth choosing trapezoidal flasks type D. Their wide base effectively protects against overturning, increasing the safety of the analyst.

Properly selected accessories guarantee tightness and cleanliness of samples:

• precise gravimetric calibration at 20°C,
• polyethylene (PE) stoppers to prevent caking,
• glass variants, ensuring the highest chemical purity,
• leak-proof caps made of polypropylene (PP).

Tapered D Keystone Flask for Stable Solution Handling

The D-type trapezoidal stock is an irreplaceable piece of equipment, the biggest advantage of which is a wide, extremely stable base. Thanks to this design, the risk of tipping over the vessel is reduced to a minimum, which is critical when working with expensive reagents. This solution really increases the comfort of work and safety in the laboratory, protecting valuable contents from spillage.

The well-thought-out geometry of the dish makes it ideal for precision tasks:

• optimal shape for working with small volumes of liquids,
• availability of variants with capacities from 1 ml to 50 ml,
• increased mechanical resistance to accidental breakage,
• precise scale for accurate dosing,
• tight closures, protecting the sterility and cleanliness of samples.

Glass plugs, PE plugs and plastic caps

Proper protection of the flask protects solutions from evaporation and contamination. The choice of closure depends on the type of reagents and the nature of the laboratory work. For aggressive chemicals, ground glass plugs work best, ensuring full chemical neutrality and NS 14/23 matching. For everyday tasks, polyethylene (PE) plugs are recommended, which do not get wedged in the cut and protect the glass from damage.

Polypropylene GL thread nuts are crucial for transport, guaranteeing airtightness and high mechanical strength.

When choosing closures, it is worth taking into account the following parameters:

• full resistance to acids and alkalis,
• no risk of seizure of the grind on PE elements,
• high thermal resistance of polypropylene materials,
• stability of the threaded connection to prevent leakage,
• Safe autoclave sterilization possible.

We invite you to discover our full range of measuring flasks!