KPG stirrer

KPG stirrer: sleeve and core

The KPG stirrer is a glass device that is used in chemical laboratories to stir fluids, mainly in synthesis. Edit the source text

A KPG stirrer consists of a precision tube (stirrer sleeve) and a stirrer shaft of precisely matching diameter (core, tolerance ± 0.01 mm) with a 10 cm long standardized precision cylindrical grinding. Owing to the complicated production, the stirrers are correspondingly expensive. KPG stirrers must be lubricated well with a sufficiently viscous lubricant, for example castor oil. In the presence of fat-dissolving agents, Kapsenberg grease should be used. The KPG stirrer is vacuum-resistant, thus evacuating the apparatus is possible. The abrasion of the glass is high, therefore a tour number of less than 600 min is recommended to increase the service life. KPG stirrers are used instead of magnetic stirrers if the apparatus is not accessible from below, the viscosity of the medium is too high, is worked with (partly) suspended solids or a high stirring speed has to be achieved. Single-level Edit source text Weblinks Edit sourcetext

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