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8 gram per gallon for prevention
MERV 14 Plus Carbon air filters are comparable to air filters with the MPR rating of 2800
making them ready to use by the plants
Ideal for renovation and demolition projects
Basic pH Meter shoe-cover 8 gram per gallon forBasic pH Meter #840087 Simple to operate and works with any electrode with a BNC connector. Measures the full 0 to 14 pH range with a high 0. 01 pH resolution. Features 3 pt. calibration, hold function available, fold out easel back and a tripod screw. Comes with a 9V battery, calibration tool, and full instructions. PROBE NOT INCLUDED. Basic pH Meter Kit #840088 Includes everything necessary for immediate field use: Basic pH Meter 840087 Epoxy body,
