8_7/8x19_1/8x1 MERV 14 AC Furnace Filters 6 Pack spl_jondon The EC/TDS portion of this

The EC/TDS portion of this probe utilizes two stainless steel pins for an amperometric determination of conductivity and total dissolved solids

Work Time – 150 min

With several sizes available

Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle

Keep container tightly sealed when not in use

8_7/8x19_1/8x1 MERV 14 AC Furnace Filters 6 Pack spl_jondon The EC/TDS portion of thisNordic Pure MERV 14 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, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.