PH readings range : 8 ALKALIN-3.5A CIDIC. Step 5 : Remove probe from soil and wipe clean after each use. Step 3 : Adjust the position of the probe until the pointer on the dial swing slightly. Design for testing soil, don't use it to test pure water or too rigid ground.
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Water Quality Detection Pen Household Drinking Water EC Meter 2in1 TDS Test Meter
Aliexpress UK
2, ORP negative potential ±1999MV. H2 hydrogen rich 0-10000PPb. H2 hydrogen rich 0-1000PPb. PH value 0-14. Lightweight and portable. Built-in high-sensitivity electrode head, high-sensitivity glass electrode, rust-proof platinum electrode.
eBay
Digital Water Quality Tester TDS EC Meter Range 0-9990 Multifunctional Water Purity Temperature Meter TEMP PPM Tester
Aliexpress UK
4 in 1 Function - This is a 4-in-1 multifunctional soil tester. For outdoor & indoor plants, gardens & grass lawn. Easy to operate, lightweight and portable to carry. 8"(200mm) long probe to reach root-deep into the soil being tested.
eBay
2 In 1 LCD Meter Digital Water Temperature Meter+Voltmeter Water Temp Sensor 1/8 NPT for Car Gauge 12V/24V
Aliexpress UK
An electro-tester for testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels of swimming pools, spas and different water sources. PH CL2 Chlorine Tester. 1 x pH and Cl2 Tester with Probe.
eBay
WiFi Water Flow Meter for Garden Hose Smart Water Meter 4 Flow Modes Real-Time Flow Tracking Easy Reading Display Usage Alerts
Aliexpress UK
Test acidity and alkalinity within the pH range of 0-14. If the tested pH value is between 0-7, it is acidic; if the tested pH value shows 7, it is neutral; if the tested pH value is between 7-14, it is alkaline.
eBay
AD Car LCD Water Temperature Meter + Thermometer Voltmeter Gauge 2in1 Temp Voltage Meter 10mm Water Temp Sensor 12V 24V
Aliexpress UK
Brand New, box unopened, still originally sealedYINMIK YK-PO1BPh tester, Digital for water, hydroponics, Accurate temperature meter with ATC for Hot Tub, Pool, Spa, Plants, Wine, Beer Can be posted collected in person (Hemel Hempstead) 1;background:white">
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2‘’52mm Oil pressure Gauge Water Level Fuel Level Meter Water Temp Oil Temperature Meter Voltmeter For Car Marine Boat 12V 24V
Aliexpress UK
The Digital PH Meter Water Aquarium LCD Pen Monitor is a compact and convenient tool for monitoring the pH levels of water in aquariums. Made of durable plastic and featuring an LCD display, this pen-shaped device is easy to use and provides accurate readings. Designed in a bright yellow colour, it is easy to spot and use in any aquarium setting. Made in China, this product is a practical addition for any aquarium owner looking to maintain optimal water quality.
eBay
DN10 Water Flow Sensor Flowmeter 0.5-10L/min Fluidmeter Water Flowmeter Counter Fluidmeter Easy Installation M4YD
Aliexpress UK
Humidity Range: 1-10 (1-3 DRY, 4-7 NOR, 8-10 WET); Relative light: 0-2000 Lux (0-200 LOW, 200-500 LOW+, 500-1000 NOR 1000-2000 HGH); pH range: 3.5-8 pH (3.5-6.5 ACID, 7 NOR, 7-8 ALKALINE). No battery required, easy and convenient to use.
eBay
EU/US Digital Water Flow Meter With HD LCD Display IPX6 Real-time View Electronic Flow Recorder Water Meter For Gardening Lawn
Aliexpress UK