Spot phosphate problems fast. AquaChek® 1-Minute Phosphate Tests help you detect even low phosphate levels that can fuel algae growth in pools and spas. The included powder pillows and vials deliver higher sensitivity at lower ranges, so you can act before algae appears. Each sealed pillow resists heat and humidity and carries a 5-year shelf life for reliable results season after season.

Why it’s great

• 1-minute results—quick checks during routine maintenance

• Low-range sensitivity to catch issues early

• Powder pillows + vials for precise, consistent testing

• Heat/humidity resistant packaging for dependable storage

• Long shelf life: up to 5 years