Nice price on dual inline TDS meter

[Dave VG]

http://www.bulkreefsupply.com/RO/DI-Filters-&-Systems-RO/DI-Accessories/c9_11/p45/DM-1:-IN-LINE-DUAL-TDS-MONITOR/product_info.html

 

[jhildebrand]

great price, reputable seller! very happy with mine and i believe it's on sale this month only...