2.5L Flat Bottom Kitchenware Whistling Kettle Sounding Kettle. Pen type tester, compact and portable carry. Made of plastic material, it is lightweight, sturdy and durable. Suitable for testing drinking water, water conditioning, reverse osmosis, cooling towers, waste water, laboratories, agriculture, etc.
eBay
Pen type ORP tester, compact and portable carry. Made of plastic material, it is lightweight, sturdy and durable. Suitable for testing drinking water, water conditioning, reverse osmosis, cooling towers, waste water, laboratories, agriculture, etc.
eBay
1 soil fertility tester. User-friendly Design: The lightweight and portable design makes it easy to carry around your garden, while the simple interface ensures that even beginners can use it effortlessly.
eBay
Pen type ORP tester, compact and portable carry. Made of plastic material, it is lightweight, sturdy and. Suitable for testing drinking water, water conditioning, reverse, cooling towers, waste water, laboratories, agriculture, etc.
eBay
The ideal range of residual chlorine in the pool water is 1.0-1.5 ppm; the ideal range for the pH of the pool water is 7.2-7.6. When testing pH, if the residual chlorine content is higher than 3.0 ppm, you may get a wrong pH test result.
eBay
WITH BACKLIGHT DISPLAY: The water quality tester automatically turns on the backlight display when turned on, allowing you to see the value even in dim conditions. 1 x Tester. Battery: 1 x 3V CR2032 button battery(not included).
eBay
Suitable for various occasions, it can testing total, free, , hardness,, pH, alkalinity. Therefore, it is very important to test the water quality of the pool regularly.Do you know that leaves, grass, dust and rain will the swimming pool?.
eBay
1pc solar light up pool balls Solar Energy Floating Light pond. Do you know that all kinds of leaves, grass,, rain, etc. will the swimming pool?. Keeping pools is another way to keep human body health.
eBay