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Pocket Digital Electric PH Meter Tester Hydroponics Aquarium Water Test Pen LCD

  • £7.99
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The readings are automatically displayed.With 0.01pH. Resolution: 0.01pH. Accuracy: ±0.05pH. Portable Design: Handheld pen style and compact carrying case makes it conveniently fits in your pocket or ...
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About Ph Pen

You don't have to guess what the pH level of your water is anymore. A digital pH pen lets you plainly see what the pH level is within seconds of placing it in the water. The first commercial pH meters were made available in the 1930s and have come a long way since that first one. Review listings for a pH test pen with automatic temperature compensation (ATC), which gives an accurate reading no matter the temperature of the water. Top-rated Sellers on eBay offer many types of pH test pen, many of which come with free shipping or combined shipping if you purchase two or more new or used items from the seller.