Applied Bio Filter Blaster 32oz - Professional 5-Minute Cartridge & DE Filter Cleaner Scale & Stain Removers the product title identifies this

the product title identifies this valve as PVC

An invisible liquid barrier that conserves water and heat

This reagent is required when you use S-1364 Phosphate Test Strips

and arm float for adult

add required amount directly into spa water

Applied Bio Filter Blaster 32oz - Professional 5-Minute Cartridge & DE Filter Cleaner Scale & Stain Removers the product title identifies thisProfessional grade Tier 1 spray cleaner that strips away scale, grease, and grime from cartridge and D. E. filters in just 5 minutes. When soaking isn't an option, Filter Blaster delivers instant results. Key Features: 5 Minute Results: Spray and rinse formula works fast for busy pool professionals Dual Compatibility: Cleans both cartridge and D. E. filters effectively Cuts Through Buildup: Melts away oils, minerals, and scale deposits 32oz Trigger