Hallux valgus is a common deformity of the big toe, defined as medial deflection of the first metatarsal bone along with lateral deflection of the first toe. Surgery has been shown to be b...
The influence of adverse pool water chemistry on the. vinyl was assessed through observation of changes in vinyl. colour, weight, dimensions, tensile strength and elongation. (stretching). The laboratory studies revealed that the factors most. affecting vinyl liners are high chlorine concentration, and.
Chlorine is much less effective at higher pH levels. At a pH of 8.0, chlorine is only 22% effective. It is also important to note that low and high levels can cause damage to a vinyl liner. Under the right circumstances, with pH below 7.0, the liner can actually grow and develop unsightly wrinkles.