Review on 🧪 HM Digital TDS-4: Portable TDS Tester with Precision Measurement and Wide Range Accuracy by Erika Brown

If you are looking for a TDS meter for situations where your life and/or work does not depend on results, this meter may be for you. Porthole test, factory calibration (calibration solution test), display up to 999 (x10) provides sufficiently accurate results for things like brewing, hydroponics or aquariums, even in high concentration environments. Cons: The low-level LCD is a kind of Walmart digital clock, sometimes difficult to read, and the LCD is sometimes difficult to see numbers like 3 or 8, but depends on the local lighting. Not waterproof, uses watch batteries so you probably won't have spares on hand. There's no backlight on the reader, pretty sure most drive-through toys these days even have a backlight. most digital counters) for cleaning and preoperative procedures.