Taylor S-1365-6 XF 3B Test Strips 6 Pack of 50 Strips - Test strips have long been the go-to testing method for pool and spa owner - and for good reason. The dry chemistries used in these strips are as reliable as those in Taylor's liquid reagents, and testing couldn't be easier. Just dip into a collected sample and read - no technical know-how required. Within seconds you’ll have a good picture of the condition of the water and whether or not any adjustments are necessary. Less time spent testing means more time for enjoying your pool or spa.