PermaGuard Solid Vinyl Rectangular Safety Pool Cover 20 x 40 Feet, 3 x 8 Center Step With No Drain valve-type_Ball It is used for Alkalinity

It is used for Alkalinity Test with Talylor Kits

a chemical tank

This Nevada Warning No Lifeguard On Duty (14 Years And Under) aluminum sign measures 18 x 24 inches

heavy-gauge 316 stainless steel rim

white light

PermaGuard Solid Vinyl Rectangular Safety Pool Cover 20 x 40 Feet, 3 x 8 Center Step With No Drain valve-type_Ball It is used for AlkalinityThis Meyco pool safety cover is designed to fit a Rectangular 20 x 40 Foot Pool with 3 x 8 Center Step. The actual cover will arrive larger to give you enough overlap around the entire pool for proper installation and use. Meyco's PermaGuard Solid Safety Covers feature an ultra strong and ultra light vinyl material; almost 1 3 lighter than other vinyl materials. The PermaGuard material is designed to form a more effective barrier to prevent surface