DURAN narrow-neck Erlenmeyer flasks, 250 ml, pack of 10, DIN ISO 1773, 212163605

The essential all-rounder for the laboratory, in a set of 10

With this pack, you receive 10 original DURAN ® Erlenmeyer flasks (narrow-necked) with a nominal volume of 250 ml. This size is the absolute standard in almost every laboratory, ideal for titrations, crystallisations or as a culture vessel. The tried-and-tested conical shape, in accordance with DIN ISO 1773, promotes effective mixing when swirled, whilst the narrow neck prevents contents from splashing out or evaporating too quickly.

DURAN ® borosilicate glass 3.3 – Highest chemical purity

Manufactured from high-purity DURAN ® borosilicate glass 3.3, these flasks offer maximum resistance to aggressive media such as acids, alkalis and organic solvents. The glass is tasteless and odourless and is characterised by high thermal shock resistance. They can be heated on a hotplate or sterilised in an autoclave (up to 121 °C / 134 °C) without any problems.

Durability and safety

The reinforced flared rim ensures high mechanical stability in the sensitive mouth area. Thanks to the trace code on each flask, seamless batch traceability is guaranteed – a crucial factor for quality-critical processes. The white ceramic scale and the labelling field are permanently fired onto the glass and withstand even intensive cleaning.

Technical details

• Contents: 10 pieces (packaging unit)
• Nominal volume per flask: 250 ml
• Shape: Narrow-neck (DIN ISO 1773)
• Rim: Flanged rim
• Material: DURAN ® borosilicate glass 3.3
• Height: 145 mm
• Outer diameter (base): 85 mm
• Neck diameter (external): 34 mm
• Autoclavable: Yes

Contents

• 10 x DURAN ® narrow-neck Erlenmeyer flasks (250 ml)
• Original box

Custom requirements & procurement service

Do you need stoppers for the 34 mm neck, wide-neck variants for easier cleaning, or larger quantities? We stock the entire DURAN range. Please contact our procurement service for bespoke quotations.