Cupper deposition.

The Idea of Study is to check the effectiveness and impact of lacquer coating quality after post fabrication and printing process. The porosity test is used to check the uniformity of lacquer in collapsible tube, after internal lacquering there are various methods left to make final printed tube (ref flow chart 1). During these processes the collapsible tube may get minor damage that may damage the uniformity of internal lacquer coating. Since uniform lacquer coating is very important for product compatibility and quality for long term study and use. Hence this study has done on printed and unprinted lacquered tube to see the porosity uniformity of lacquer. After observation, data study (Nos. of dark spot deposition) we can not found any major difference in dark spot generation (porosity test) for both type of tube. Also we kept one drug product in both printed and unprinted tube after two month study there is no significance difference observed during stability.