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’.
![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-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![PSTD400017](/img/cache/pstd400017-250x167.jpg)
120 Mesh paddle over disk assembly, PTFE ring
PSTD400017![PSTD400017S](/img/cache/pstd400017s-250x167.jpg)