Sensafe (480008) Total Hardness Test; Bottle 50 Test Strips 20 inch x 4.5 inch Big Blue Filters2776 The 1/4" compression port accommodates

The 1/4" compression port accommodates standard tubing used in most residential filtration systems

Two 10-micron carbon blocks plus inline GAC post-filter

clean valve ports

this electrode handles aggressive chemicals

Sensafe (480008) Total Hardness Test; Bottle 50 Test Strips 20 inch x 4.5 inch Big Blue Filters2776 The 1/4" compression port accommodatesThe Sensafe 480008 Total Hardness Test provides fast, accurate water hardness measurement in just 3 seconds using simple colorimetric test strips. This bottle contains 50 test strips with a detection range from 0 to 1000 ppm, ideal for pool and spa maintenance, water treatment service work, and customer education. SPECIFICATIONS Sensafe 480008 Test Strip Features Tests Per Bottle 50 strips Individual test strips Test Time 3 seconds Instant results