plant & animal care
full spectrum high-pressure sodium lamp is ideal for plant growth
microbial and mineral extracts
It is reassuringly fireproof
Never mix the A-concentrate directly with the B-concentrate
HM pH-200 ProbeTip/ReplacementSensor PH-200 fruit formation plant & animal care*This is the replacement sensor only!* Product Description: HM Digital's PH 200 is a digital waterproof pH meter (aka pH tester or pH pen) that is ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. It is fast acting, features amazing results