Hydrosensitive Paper (Spray Indicator Cards) - 10 Sheets - 2" x 4" Intake Pressure-Induced Filtration Mechanism: As water

Pressure-Induced Filtration Mechanism: As water enters the filter and pressure builds

Mildew Cure is derived from garlic extracts and other essential oils

making it a favorite among gardeners and horticulturists

Prolongs lifespan of downstream filters and membranes

Hydrosensitive Paper (Spray Indicator Cards) - 10 Sheets - 2" x 4" Intake Pressure-Induced Filtration Mechanism: As waterHydrosensitive Spray Indicator Cards for Coverage Checks A foliar or IPM spray only works where the droplets land, and the naked eye cannot see a thin, uneven coat until pests survive it. These cards make that coverage visible, turning the yellow paper blue everywhere a droplet hits. Clip a card in the canopy, run the sprayer, and read the blue stain for density, gaps, and drift at a glance. Each sheet is 2 by 4 inches, easy to pin on a leaf, a stake,