Currently, Aldi is offering a Gardenline pH Tester for $6.99, an essential item you probably didn't think you needed for your ...

can be measured with HANNA’s HI 93102 portable meter. This instrument not only measures turbidity, but also pH, total and free chlorine, bromine, iodine, iron, and cyanuric acid (CYS).

Data can be later transferred to a PC via RS232 or USB interface and HANNA HI 92000 software (optional). For advanced field applications, the HI 98713 is equipped with Fast Tracker™—Tag ...

Recirculation of wood ash to forest soils can thus return valuable nutrients to forest ecosystems and counteract soil acidification ... to a conductivity meter Cond 340i (WTW, Weilheim, Germany) ...

Application of chemical fertilizer or manure can affect soil microorganisms directly by supplying nutrients and indirectly by altering soil pH. However, it remains uncertain which effect mostly shapes ...