ChP

Disc

Method 1

1.Upper layer of disc: Screen opening: 2.0mmx2.0mm

Disc thickness: 3.0mm

Distance from disc to paddle bottom: 25.0mm

Disc diameter: 80mm/86mm/92mm

2.Lower layer of disc: Screen opening: 2.0mmx2.0mm

Disc thickness: 3.0mm

Disc diameter: 80mm/86mm/92mm

Method 2

Disc diameter: 41.2mm

Disc thickness: 3.3mm

Distance from disc to paddle bottom: 25.0mm±2.0mm

Other apparatus requirements are the same as those ofApparatus 2 (paddle apparatus) in the Pharmacopoeia of the People's Republic of China.

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USP <724> APPARATUS 5

USP

Disc

Method 1

Mesh screen diameter/observation glass: 90mm

Disc thickness: 3.3mm

Distance from disc to paddle bottom: 25.0mm±2.0mm

Method 2

Disc diameter: 41.2mm

Disc thickness: 3.3mm

Method 3

Wire mesh screen dimension unknown

Material: made of stainless steel or other inert material

Other apparatus requirements are the same as those of USP<711> APPARATUS 2.

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EP <2.9.4> APPARATUS 1-2

EP

Disc

Method I Extraction cell

Cover height: 8.5 mm Inner diameter: 50mm 

Area: 19.63cm2

(The following diameters may be adopted: 20mm, 32mm, 40mm,50mm, which correspond to the following areas respectively: 3.14, 8.03, 12.56, 19.63 cm2)

Storage cell height: 8.5mm Inner diameter: 52mm

Area: 21.23cm2

The following diameters may be adopted:27mm, 38mm, 45mm, 52mm, which

correspond to the following volumes respectively: 1.48 mL, 2.94 mL, 4.13 mL, 5.52ml)

Distance from disc to paddle bottom: 25.0mm±2.0mm

Method 2 Disc assembly method

Disc diameter: 41.2mm

Disc thickness: 3.3mm

Distance from disc to paddle bottom: 25.0mm±2.0mm

Other apparatus requirements are the same as those of EP<2.9.3> APPARATUS 2.

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