Hardness can be determined using a variety of commercially available water test kits, for example, using {HEAD ~ a test kit} sold under {TAIL ~ the trademark} Monitor C™ by Fleetguard, Inc 
Hardness can be determined using a variety of commercially available water test kits , for example , using { HEAD ~ a test kit } sold under { TAIL ~ the trademark } Monitor C ™ by Fleetguard , Inc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH