Home » Freebies & Samples » Home & Garden » Free hard water test strip from Whirpool Free hard water test strip from Whirpool Tom Pisarski Jan 20, 2018 Home & GardenFavorite Share on facebookTweetPinterestShare on Google+Deal Score+6 no comments 134 Get the Deal Fill out a short form and you’re done. Enjoy free hard water test strip from Whirpool.