The “Paddle over Disk” is a modified version of Method 2 (Paddle Method) and is used for the determination of the drug release rate of transdermal patches. It is described in the United States Pharmacopoeia (USP) under Chapter <724> as Method 5 and in the European Pharmacopoeia (Ph.Eur.) under Chapter 2.9.4. Method 1 as ‘Disk Assembly Method’.
![PSAPP5S120-35-USP-apparatus-V-5-120-mesh-screen-35mm](/img/cache/psapp5s120-35-usp-apparatus-v-5-120-mesh-screen-35mm-250x167.jpg)
120 Mesh screen ø35mm (Set/25)
PSAPP5S120-35![PSAPP5S120-56-USP-apparatus-V-5-120-mesh-screen-56mm](/img/cache/psapp5s120-56-usp-apparatus-v-5-120-mesh-screen-56mm-250x167.jpg)
120 Mesh screen ø56mm (Set/25)
PSAPP5S120-56![PSAPP5S16-35-USP-apparatus-V-5-16-mesh-screen-35mm](/img/cache/psapp5s16-35-usp-apparatus-v-5-16-mesh-screen-35mm-250x167.jpg)
16 Mesh screen ø35mm (Set/25)
PSAPP5S16-35![PSAPP5S16-56-USP-apparatus-V-5-16-mesh-screen-56mm](/img/cache/psapp5s16-56-usp-apparatus-v-5-16-mesh-screen-56mm-250x167.jpg)
16 Mesh screen ø56mm (Set/25)
PSAPP5S16-56![PSAPP5S16-80-USP-apparatus-V-5-16-mesh-screen-80mm](/img/cache/psapp5s16-80-usp-apparatus-v-5-16-mesh-screen-80mm-250x167.jpg)
16 Mesh screen ø80mm (Set/25)
PSAPP5S16-80![PSAPP5S20-35-USP-Dissolution-Accessories-apparatus-V-5-20-mesh-paddle-over-disk-screen-35mm](/img/cache/psapp5s20-35-usp-dissolution-accessories-apparatus-v-5-20-mesh-paddle-over-disk-screen-35mm-250x167.jpg)
20 Mesh screen ø35mm (Set/25)
PSAPP5S20-35![PSAPP5S30-35-USP-Dissolution-Accessories-apparatus-V-5-30-mesh-paddle-over-disk-screen-35mm](/img/cache/psapp5s30-35-usp-dissolution-accessories-apparatus-v-5-30-mesh-paddle-over-disk-screen-35mm-250x167.jpg)
30 Mesh screen ø35mm (Set/25)
PSAPP5S30-35![PSAPP5S40-35-USP-apparatus-V-5-40-mesh-screen-35mm](/img/cache/psapp5s40-35-usp-apparatus-v-5-40-mesh-screen-35mm-250x167.jpg)
40 Mesh screen ø35mm (Set/25)
PSAPP5S40-35![PSAPP5S40-56-USP-apparatus-V-5-40-mesh-screen-56mm](/img/cache/psapp5s40-56-usp-apparatus-v-5-40-mesh-screen-56mm-250x167.jpg)
40 Mesh screen ø56mm (Set/25)
PSAPP5S40-56![PSAPPFIVE-HR-USP-apparatus-V-5-Transdermal-patch-holder-set](/img/cache/psappfive-hr-usp-apparatus-v-5-transdermal-patch-holder-set-250x167.jpg)
Transdermal patch holder
PSAPPFIVE-HR![PSAPPFIVE-HRCLIP-USP-apparatus-V-5-Replacement-clip-kynar](/img/cache/psappfive-hrclip-usp-apparatus-v-5-replacement-clip-kynar-250x167.jpg)
Replacement clip for PSAPPFIVE-HR
PSAPPFIVE-HRCLIP![PSAPPFIVE-HRSCR-USP-apparatus-V-5-17-mesh-PTFE-screen-for-PSAPPFIVE-HR](/img/cache/psappfive-hrscr-usp-apparatus-v-5-17-mesh-ptfe-screen-for-psappfive-hr-250x167.jpg)
17 mesh PP screen for PSAPPFIVE-HR
PSAPPFIVE-HRSCR![PSAPPFIVE-SC](/img/cache/psappfive-sc-250x167.jpg)
Custom transdermal patch holder
PSAPPFIVE-SC![PSAPPFIVE-V35-040-USP-apparatus-V-5-Paddle-over-disk-assembly-40-mesh-35mm](/img/cache/psappfive-v35-040-usp-apparatus-v-5-paddle-over-disk-assembly-40-mesh-35mm-250x167.jpg)
40 Mesh paddle over disk assembly
PSAPPFIVE-V35-040![PSAPPFIVE-V35-120-USP-apparatus-V-5-Paddle-over-disk-assembly-120-mesh-35mm](/img/cache/psappfive-v35-120-usp-apparatus-v-5-paddle-over-disk-assembly-120-mesh-35mm-250x167.jpg)
120 Mesh paddle over disk assembly
PSAPPFIVE-V35-120![PSAPPFIVE-V50-12-USP-apparatus-V-5-Paddle-over-disk-assembly-12-mesh-50mm](/img/cache/psappfive-v50-12-usp-apparatus-v-5-paddle-over-disk-assembly-12-mesh-50mm-250x167.jpg)
12 Mesh paddle over disk assembly
PSAPPFIVE-V50-012![PSAPPFIVE-V56-040-USP-apparatus-V-5-Paddle-over-disk-assembly](/img/cache/psappfive-v56-040-usp-apparatus-v-5-paddle-over-disk-assembly-250x167.jpg)
120 Mesh paddle over disk assembly
PSAPPFIVE-V56![No photo availablekopie](/img/cache/no-photo-availablekopie-4-250x167.jpg)
16 Mesh paddle over disk assembly
PSAPPFIVE-V56-016![PSAPPFIVE-V56-040-USP-apparatus-V-5-Paddle-over-disk-assembly](/img/cache/psappfive-v56-040-usp-apparatus-v-5-paddle-over-disk-assembly-2-250x167.jpg)
40 Mesh paddle over disk assembly
PSAPPFIVE-V56-040![PSAPPFIVE-V80-USP-apparatus-V-5-Paddle-over-disk-assembly](/img/cache/psappfive-v80-usp-apparatus-v-5-paddle-over-disk-assembly-250x167.jpg)
16 Mesh paddle over disk assembly
PSAPPFIVE-V80![No photo availablekopie](/img/cache/no-photo-availablekopie-71-250x167.jpg)