HARDNESS INDEX

 
COLORIMETERS
eXact Micro 7+ Photometer LaMotte Smart 3 Colorimeter
       
TEST KITS
LaMotte Test Kits Lovibond Total Hardness Mini Kits
LaMotte Test Kit - Drop Titration    
       
TEST STRIPS
Hach 5 In 1 Test Strips School Test Strip Kit
Total Hardness Test Strips Waterworks 5 Way Test Strips
Waterworks 9 Way Test Strips