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