8x18x1 Exact MERV 10 AC Furnace Filters 6 Pack Tubing The Bluelab pH Probe is

The Bluelab pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution

Advanced safety features including oxygen depletion sensor

Granular is easily applied to new plantings by simply sprinkling it into a planting hole or mixing in potting soil

Hardwood handle

8x18x1 Exact MERV 10 AC Furnace Filters 6 Pack Tubing The Bluelab pH Probe isNordic Pure MERV 10 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, allergens and other contaminants are removed. MERV 10 furnace filters are comparable to HVAC filters with the rating of MPR 900 1000. While different companies