Pond water test Fast, Quick & Convience Muti(5 in 1) test:PH, KH,GH, NO2 & NO3 50pcs/tube 5 IN 1 POND WATER TEST STRIPTest item & range;PH: 6.4-8.4KH: 0d-20dGH:0d-16dNO2: 0-20ppmNO3: 0-250ppmPackage: 30 or 50 pcs in one plastic tube, with blister and hang card, putin carton.We can provide the OEM service to do with customer private label. 5 IN 1 POND TEST STRIP