A flush toilet is different from a urinal, which is designed to handle only liquid waste; or from a bidet, which can be used for personal cleansing after toilet use.
Polyvinylidene fluoride (PVDF), commonly referred to as KynarÂ®, is a high molecular weight fluorocarbon that has superior abrasion resistance, dielectric properties and mechanical strength.eneral / chemical grade polyvinylidene fluoride (PVDF) is a high molecular weight fluorocarbon with superior abrasion resistance, dielectric properties and mechanical strength. It is available from 1/2 to 16.
PVR is strictly defined as a complication of rhegmatogenous retinal detachment that is characterized by the formation of membranes on both surfaces of the detached retina and on the posterior surface of the detached vitreous gel.t is manifest by the formation of fibrocellular membranes on the retinal and posterior hyaloid surfaces. Most cells in PVR membranes originate from adjacent retina and the displaced cells synthesize much of the membrane matrix. The membranes have some features in common with healing wounds.