Hanna Instruments

Hanna Instruments are globally recognised specialists in precision measurement, with more than 40 years of experience in pH, EC, and water testing. Founded in Italy in the late 1970s, the brand has grown into a trusted name for professionals and hobby growers alike, delivering dependable tools that make nutrient and water management simple, accurate, and reliable.

Popular options include the GroLine pH Tester, designed specifically for growers to provide quick, accurate readings in nutrient solutions, and the GroLine Combo pH/EC/Temperature Tester, which allows three key parameters to be monitored at once. Both products are valued for their robust design and ease of use, making them firm favourites for UK gardeners who want reliable equipment season after season.

For growers who refuse to compromise on accuracy, we recommend Hanna Instruments from Greens Horticulture — delivering precision tools, proven reliability, and fast UK delivery.