Dual Inline TDS meter

Not to be compared with cheaper models, this easy to read display measures Total Dissolved Solids in two places.

Recommended installation: Insert one probe (into a Tee fitting) between the RO membrane and the DI section, and the second probe after the DI stage (in a second Tee fitting).

Uses two AA batteries, included. Includes mounting bracket and doublestick adhesive tape.

Price: $50.00

Product Details

Not to be compared with cheaper models, this easy to read display measures Total Dissolved Solids in two places.

Recommended installation: Insert one probe (into a Tee fitting) between the RO membrane and the DI section, and the second probe after the DI stage (in a second Tee fitting).

Uses two AA batteries, included. Includes mounting bracket and doublestick adhesive tape.

Uses a single AA battery

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Company Detail

Melev’s Reef was built to educate hobbyists, providing the best detail to help readers succeed as reef keepers and avoid common pitfalls (often due to lack of knowledge or misinformation). This repository of articles grows annually, sharing what I know and photo-documenting those experiences.

The products I trust to keep my own livestock healthy are the same ones I sell to customers. Using these products myself, I can more easily provide assistance when questions arise. Thank you for supporting a small-but-growing business.

Brands We Offer

We only sell the brands we'd use ourselves!