{"product_id":"taylor-hardness-reagent-16-ounce-16-oz-r-0012-e","title":"Taylor R-0012-E Hardness Reagent - 16 oz","description":"\u003cdiv\u003e\n\u003ch2\u003e\u003cstrong\u003ePrecise Calcium Hardness Testing for Balanced Pool and Spa Water\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTaylor R-0012-E Hardness Reagent is a 16 oz bottle used to determine calcium hardness in pool and spa water as part of Taylor's testing kits. It participates in the colorimetric hardness test by reacting with a water sample to produce a color change that corresponds to calcium hardness levels. Use this reagent in conjunction with the R-0012-E hardness testing workflow to obtain precise calcium hardness readings and guide balancing steps for healthy water and protected equipment.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eConstruction, Compatibility and Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe reagent is manufactured by Taylor Technologies for compatibility within their calcium hardness testing system. It is provided in a 16 oz bottle and is intended to be used with Taylor's standard hardness testing procedure, including the R-0012-E steps. The formulation supports reliable color development with pool and spa water samples, enabling consistent readings when paired with the Taylor color comparator or reference chart. Store per label directions and keep the bottle tightly closed when not in use.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSystem compatibility:\u003c\/strong\u003e Works with Taylor calcium hardness testing kits (R-0012-E) for pool and spa water.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement or maintenance context:\u003c\/strong\u003e Replaces spent hardness reagent in routine pool and spa water testing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance outcome:\u003c\/strong\u003e Enables accurate calcium hardness readings to guide scale control and equipment protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation or configuration context:\u003c\/strong\u003e Used as part of the standard hardness testing workflow—added to a sample and compared to the color chart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVolume: 16 oz (473 mL) bottle.\u003c\/li\u003e \u003cli\u003eReagent type: Calcium hardness test reagent for pool and spa water.\u003c\/li\u003e \u003cli\u003eCompatibility: Designed for use with Taylor R-0012-E hardness testing procedures.\u003c\/li\u003e \u003cli\u003eStorage: Store in a cool, dry place; keep bottle tightly closed when not in use.\u003c\/li\u003e \u003cli\u003eTesting method: Supports colorimetric hardness testing within Taylor's standard procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTaylor Technologies is a trusted leader in pool and spa chemistry, delivering precise, dependable testing solutions for homes and professionals. With decades of experience, Taylor’s reagents and test kits are engineered for accuracy, reliability, and ease of use in real-world installations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Taylor Water Technologies","offers":[{"title":"Default Title","offer_id":51999107875090,"sku":"R-0012-E","price":22.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/TAYR0012E_0.jpg?v=1770172567","url":"https:\/\/www.aquaterrabackyard.com\/products\/taylor-hardness-reagent-16-ounce-16-oz-r-0012-e","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}