29x29x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Very low TDS - Doesn't

Very low TDS - Doesn't throw off mineral balance

Suggested Uses: For use as a contact biological insecticide in the control or suppression of many foliar-feeding pests

The all-new Twister T4 40 Micron Fine Leaf Collection Bag keeps your fresh trimmings safe

Wilts & Blights

Measures electrical conductivity (EC)

29x29x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Very low TDS - Doesn'tNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.