Hydrosensitive Paper (Spray Indicator Cards) - 10 Sheets - 2" x 4" Intake Prolongs lifespan of downstream filters

Prolongs lifespan of downstream filters and membranes

closes at 7 PSI Pressure Range 10 to 45 PSI Pack Size 25 assemblies

freeing up floor space and simplifying layout in tight rooms

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

making it a favorite among gardeners and horticulturists

Hydrosensitive Paper (Spray Indicator Cards) - 10 Sheets - 2" x 4" Intake Prolongs lifespan of downstream filtersHydrosensitive 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,