One of the leading measurement methods used for quality monitoring in the pharmaceutical industry is consistency measurement by means of the Anton Paar PNR 12 penetrometer.

Using this method, involving small sample quantities and short analysis times, precise statements can be made as to the quality of the measured sample. The resulting penetration depth is a measurement for the consistency of the substance.

Ointments with a low consistency, for example, can be more thoroughly applied on the skin and more easily absorbed. On the other hand, a substance with a high consistency can be used to cover a wound effectively.

European Pharmacopoeia 2.9.9, allows consistency measurements with a standard cone or a micro-cone. Measurement with the micro-cone is preferred because of its small sample volume of 4 mL. The smaller sample size means they are ideal during the development phase when sample volume can be limited and offer faster temperature-stabilisation allowing shorter overall test times.

The commonly used Klein Micro-Cone test set uses a vertically separated test cup making it easy to fill without air bubbles. This ensures repeatable and reproducible results.

For all orders for the PNR 12 placed before the end of 2016, Anton Paar will include a micro cone test FREE OF CHARGE worth up to £1300.

For pharmaceutical applications, PNR 12 is supported with tailored qualification documentation (PQP-S, Pharma Qualification Package - Smart PNR 12).

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