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The PTWS 820D is an 8 position, single drive compact tablet dissolution testing instrument for solid dosage forms as described in USP chapter <711/724> and EP section <2.9.3/4> as well as the DAB and Japanese Pharmacopeia section <15>. It is supplied with a staggered start feature for each of the eight positions. The upper drive is electronically controlled to offer two positions: an upper cleaning and a lower working position. The electronically driven lift mechanism is located centrally above the water bath. This assures that the whole lift drive mechanism is positioned in a way so that the tool shafts are always kept parallel and at a 90° angle to the vessel walls when in the working position.

Display : LCD color 6"
Data Entry : Touch screen
Timer : times, wake-up and sleeping mode, operation time information and count-down mode
Printer : External data logger
Vessel No. : 8 (4 by 2 or 2 by 4 arrangement)
Speed : 20-220Rpm, ±2% of set speed, typically < 1%
Heater Range : 25 - 45°C, ± 0.2°C inside the water bath
Circulation : Water circulated from external heating system through special diffuser inside the water bath.
Dimension : 45 x 75 cm (2 by 4) or 75 x 45 cm (4 by 2)

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