Separatory funnel Walter 1000ml ST 29/32

Separating funnel according to Walter 1000 ml NS 29/32 is an ungraduated laboratory glassware item designed for liquid-liquid extractions and phase separations on a larger preparative scale. Manufactured from borosilicate glass 3.3, it offers excellent chemical resistance and thermal stability for demanding laboratory applications. The Walter-type body is fitted with a solid NS stopcock plug that features a 4 mm bore, enabling efficient drainage of the denser phase during separations. A polyethylene stopper seals the top opening at the standardised NS 29/32 ground joint, ensuring secure closure and compatibility with other NS glassware. This robust design from manufacturer Witeg is supplied in packs of two pieces and supports reliable handling in organic chemistry, process development and quality-control laboratories. The ungraduated 1000 ml capacity is particularly useful when large solvent volumes or bulk sample work-up are required. Clear phase boundaries remain easy to observe through the transparent glass wall, while the solid stopcock construction provides durable, leak-resistant performance over repeated use cycles. Suitable for solvent partitioning, extractive sample preparation and routine separation workflows, the funnel delivers a practical combination of volume, joint standardisation and chemical durability.

This article is part of Separating funnels, in Funnels.

Key features

• Pack size: 2 pc(s)
• Capacity: 1000 ml
• Material: Borosilicate glass 3.3
• Type: According to Walter, ungraduated
• Joint size: NS 29/32
• Stopcock bore: 4 mm