Description
Replacement PTFE spindle Economy is a spare spindle intended for laboratory stopcocks and burette valves that require a larger 0–6 mm bore. It incorporates a sealing system together with over-rotation protection to support dependable shut-off and adjustable flow during titration, dispensing and general liquid handling. Constructed from PTFE, the spindle provides chemical resistance appropriate for typical laboratory reagents. Delivered as a single piece with a net weight of 0,012 kg, the component enables simple servicing of compatible valve assemblies. This Economy series spindle from manufacturer Witeg is suited to teaching and research laboratories that need consistent passage control in the 0–6 mm range. The sealing arrangement helps maintain leak-tight operation, while the over-rotation safeguard protects the spindle during repeated adjustments. As a direct replacement part it restores functionality when the original spindle is worn, without changing the geometry of matching stopcock bodies. A practical option for keeping burette and valve systems ready for quantitative chemistry and routine volumetric procedures.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Type: Replacement PTFE spindle
- Series: Economy
- Material: PTFE
- Bore: 0–6 mm
- Sealing: Sealing system with over-rotation protection
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Questions about Spare PTFE-needle valve, ''Economy''
What is this article?
Spare PTFE-needle valve, ''Economy'' is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Viscometers, inside Density & viscosity measurement, in Lab instruments.
A capillary viscometer times the flow of a liquid through a tube. A rotational viscometer twists a spindle in the liquid. Both need a stated temperature. Kinematic and dynamic viscosity are different numbers. The capillary size has to put the flow time in the range the method allows.
Density is mass divided by volume. A hydrometer floats at a depth that depends on the density of the liquid. A pycnometer is a vessel of known volume that is weighed full. Viscosity is the resistance to flow. A capillary viscometer times how long a volume takes to fall through a tube. Both measurements need a stated temperature, because liquids change density and viscosity as they warm. The units trace to the BIPM and to NIST.
Which category should I open next?
The category is Density & viscosity measurement. The sub-category is Viscometers. The catalogue is Lab instruments.
Shelves beside this one are Hydrometers and Density meters & pycnometers.
What should I check before I order?
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.