Check the listing for details. Aquachek one minute Phosphate Pool & Spa Test - 562227 - 2 PACK. Condition: New. Listed at 19.99 USD. Product Description -2 pack PROBLEMS WITH ALGAE? PHOSPHATES MAY BE FEEDING THE ALGAE Keep phosphate levels in check to prevent algae breakouts! Packaged in a convenient and sturdy plastic bottle, the AquaChek Phosphate kit includes testing powder pillows, sampling vial, directions and color chart. The test gives accurate results after only 60-seconds, and measures phosphate from 0 to 1000 parts per billion. 20 tests per bottle. Only available in US. If you have any questions or concerns, or do not see an item that you would like, please do not hesitate to contact us through eBay, or give us a call!(813-938-1802). With over 30 years experience in the Florida pool industry, we are experts when it comes to pool parts advice and customer service. Thank you for choosing Positive Pool Wholesale Supply.