eBay
ORP negative potential ±1999MV. Salinity 0-20%. The specific gravity of S.G seawater is 1.000-1.222. 2, TDS value 0-200000ppm. H2 hydrogen rich 0-2400PPb. EC value 0-200000㎲/cm. 1x 7 In 1 Tester Pen. PH value 0-14.
eBay
eBay
🧪💧2-in-1 Digital PH & TDS Water Tester Kit | 0.01 Accuracy | LCD Display | Aquarium, Drinking Water, Hydroponics, Pools 🌊🌿. 📱Multifunction Use : Ideal for aquariums, labs, pools, spas, drinking water, hydroponics, etc.
eBay
Type: PH Tester. Accuracy: ±0.2PH; ±0.1PH (20°C). Resolution: 0.1PH. Handheld pen style and compact carrying case makes it conveniently fits in your pocket or bag and goes anywhere. Display: LCD Digital.
eBay
Press the shift key to switch between different modes. 1 X 3-in-1 Water Quality Tester. Wipe the electrode clean and insert it into the electrode protection sleeve. Size: 15.5cm X 3cm X 1.5cm. ③ After the value stabilizes, press the HOLD key and take out the reading.
eBay
Growth Technology pH Buffer Solutions 4 &7.
eBay
Wide Range of Applications: Ideal for testing water in aquariums, hydroponics, pools, drinking water, and more.
eBay