GroLine Waterproof Portable pH/EC/TDS Meter with Calibration Solution(25 x 20 mL sachets) MW151US you can store this pack

you can store this pack as backup for when your filters need a change

Why Choose the Travel Berkey

gel filled electrode

easy-to-read LCD displays all four scales simultaneously

Accuracy: Standard ±75 mV

GroLine Waterproof Portable pH/EC/TDS Meter with Calibration Solution(25 x 20 mL sachets) MW151US you can store this packOne of the best meters for hydroponics, our GroLine Waterproof Portable pH EC TDS Meter (HI9814) is a must have for growers. Easily manage and monitor your growing nutrients with this customer favorite. Be up in running in no time! This meter arrives with everything you need for successful testing right out of the box. Whether you're a commercial or at home grower, testing nutrients is easy with Hanna by your side. Verify nutrient results on the spot