AquaChek 522255 TruTest Spa Digital Test Strip Reader Refill Strips - 50 Count<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>50 test strips included</li><li>Excellent for easy spa or hot tub water testing</li><li>Automates color matching， used in conjunction with the Aquachek TruTest Spa test strip reader</li><li>Digital reader sold separately</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ER1VzL3vL.jpg" noproxy>