{"id":61608,"date":"2021-04-19T17:17:48","date_gmt":"2021-04-19T15:17:48","guid":{"rendered":"https:\/\/wpcalc.com\/?p=61608"},"modified":"2026-10-01T13:17:58","modified_gmt":"2026-10-01T10:17:58","slug":"antiscalant-dosing","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/medical\/antiscalant-dosing\/","title":{"rendered":"Antiscalant Dosing Calculator"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Determine Antiscalant Dosage<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"61608\" data-favorite-title=\"Antiscalant Dosing\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/medical\/antiscalant-dosing\/\" data-favorite-excerpt=\"Calculate antiscalant dosing for reverse osmosis (RO) systems. Enter the product, dosage in ppm, day tank concentration and volume, and feed flow to get the dosing pump rate in mL\/min plus the weight and volume of chemical to add to the tank.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-pharmacology\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/medical\/antiscalant-dosing\/\" method=\"POST\" class=\"calculator\" id=\"calculator-61608\" data-post=\"61608\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Select Antiscalant<\/label><div class=\"grid grid-cols-1\"><select id=\"field-1\" name=\"select_antiscalant\"><option value=\"1.012\">SpectraGuard 100<\/option><option value=\"1.185\">SpectraGuard 111<\/option><option value=\"1.47\">SpectraGuard 150<\/option><option value=\"1.154\">SpectraGuard 250<\/option><option value=\"1.075\">SpectraGuard 350<\/option><option value=\"1.109\">SpectraGuard 360<\/option><option value=\"1.283\">SpectraGuard 370<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><div class=\"field\" id=\"input-2\"><label for=\"field-2\">Antiscalant dosage<\/label><input type=\"number\" name=\"antiscalant_dosage\" id=\"field-2\" aria-describedby=\"calc-unit-2 calc-info-2\" placeholder=\"e.g. 2.5\" step=\"any\" value=\"2.5\"\/><div class=\"unit\" id=\"calc-unit-2\">ppm<\/div><small id=\"calc-info-2\">Dosage rate in ppm<\/small><\/div><div class=\"field\" id=\"input-3\"><label for=\"field-3\">Day tank concentration<\/label><input type=\"number\" name=\"day_tank_concentration\" id=\"field-3\" aria-describedby=\"calc-unit-3 calc-info-3\" placeholder=\"e.g. 5\" step=\"any\" value=\"5\"\/><div class=\"unit\" id=\"calc-unit-3\">%<\/div><small id=\"calc-info-3\">Concentration of antiscalant in tank<\/small><\/div><div class=\"field\" id=\"input-4\"><label for=\"field-4\">Day tank volume<\/label><div class=\"field-group\"><input type=\"number\" name=\"day_tank_volume\" id=\"field-4\" placeholder=\"e.g. 50\" step=\"any\" value=\"50\"\/><div class=\"grid grid-cols-1\"><select id=\"field-5\" name=\"unit\" aria-label=\"Unit\"><option value=\"1\">gal<\/option><option value=\"3.785411784\">L<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/div><div class=\"field\" id=\"input-5\"><label for=\"field-6\">System feed flow<\/label><div class=\"field-group\"><input type=\"number\" name=\"system_feed_flow\" id=\"field-6\" placeholder=\"e.g. 100\" step=\"any\" value=\"100\"\/><div class=\"grid grid-cols-1\"><select id=\"field-7\" name=\"unit\" aria-label=\"Unit\"><option value=\"1\">gpm<\/option><option value=\"15.8503231415\">L\/hr<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"61608\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Antiscalant Flow Rate<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>Weight to be Added<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Volume to be Added<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"61608\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">1<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">1<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Antiscalant Dosing Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ \\text{Flow Rate (mL\/min)} = \\frac{\\text{Dosage (ppm)} \\times \\text{Feed Flow (L\/min)}}{\\text{Day Tank Concentration (\\%)}}, \\quad \\text{Volume to Add} = \\text{Tank Volume} \\times \\frac{\\text{Concentration (\\%)}}{100} \\\\ \\text{Weight to Add (lbs)} = \\frac{\\text{Volume to Add (gal)} \\times 3785.41 \\times \\text{Density (g\/mL)}}{453.592} \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\text{Dosage}\\) \u2014 the target antiscalant dose in ppm (mg\/L of feed water)<\/li>\n<li>\\(\\text{Feed Flow}\\) \u2014 the RO feed flow converted to L\/min (gpm \u00d7 3.78541, or L\/hr \u00f7 60)<\/li>\n<li>\\(\\text{Day Tank Concentration}\\) \u2014 the strength of the diluted antiscalant solution in the day tank (%)<\/li>\n<li>\\(\\text{Tank Volume}\\) \u2014 the usable volume of the day tank<\/li>\n<li>\\(\\text{Density}\\) \u2014 the specific gravity of the neat antiscalant product (g\/mL), set automatically from the product you select<\/li>\n<\/ul>\n<p>The flow rate is the setting for the chemical dosing pump. The volume and weight tell you how much concentrated product to pour into the day tank before diluting with RO permeate or demineralized water up to the final tank volume.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Antiscalant Dosing \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> an RO system with a feed flow of 100 gpm runs on SpectraGuard 100 at a dosage of 2.5 ppm, prepared as a 5% solution in a 50-gallon day tank.<\/p>\n<p>\\[ \\text{Feed Flow} = 100 \\times 3.78541 = 378.54 \\text{ L\/min} \\]<\/p>\n<p>\\[ \\text{Flow Rate} = \\frac{2.5 \\times 378.54}{5} = 189.27 \\text{ mL\/min} \\]<\/p>\n<p>\\[ \\text{Volume to Add} = 50 \\times \\frac{5}{100} = 2.5 \\text{ gal} \\]<\/p>\n<p>\\[ \\text{Weight to Add} = \\frac{2.5 \\times 3785.41 \\times 1.012}{453.592} = 21.11 \\text{ lbs} \\]<\/p>\n<p><strong>Result:<\/strong> set the dosing pump to 189.27 mL\/min, and add 2.5 gal (21.11 lbs) of SpectraGuard 100 to the day tank before topping up to 50 gal.<\/p>\n<p>\n\r\n<\/section>\n<h2>How to Use the Calculator<\/h2>\n<ol>\n<li>Open <strong>Select Antiscalant<\/strong> and choose the product you use. The product density is applied automatically.<\/li>\n<li>Enter the <strong>Antiscalant dosage<\/strong> in ppm. This value should come from your scaling projection software, water analysis, or the product data sheet.<\/li>\n<li>Enter the <strong>Day tank concentration<\/strong> in percent \u2014 the strength of the diluted solution you will prepare in the tank.<\/li>\n<li>Enter the <strong>Day tank volume<\/strong> and choose <strong>gal<\/strong> or <strong>L<\/strong> in the Unit box. Use gallons for fully consistent volume and weight results.<\/li>\n<li>Enter the <strong>System feed flow<\/strong> and select <strong>gpm<\/strong> or <strong>L\/hr<\/strong>.<\/li>\n<li>Read the results: <strong>Antiscalant Flow Rate<\/strong> is your dosing pump setting in mL\/min, while <strong>Weight to be Added<\/strong> and <strong>Volume to be Added<\/strong> tell you how much neat product to put in the day tank.<\/li>\n<\/ol>\n<h2>What Is Antiscalant Dosing and Why It Matters<\/h2>\n<p>An antiscalant is a chemical additive injected continuously into the feed water of a reverse osmosis (RO) system to prevent mineral scale from forming on the membranes. Feed water carries dissolved ions such as calcium, barium, strontium, magnesium and silica. As water passes through the membrane, these ions become concentrated, and once their solubility limits are exceeded they precipitate as hard scale \u2014 most commonly calcium carbonate, calcium sulfate and silica. Even a thin scale layer partially blocks the membrane surface, which raises the pressure needed to maintain permeate flow, reduces salt rejection, and can permanently damage the membranes.<\/p>\n<p>Antiscalants work through three main mechanisms: they delay the nucleation of scale-forming crystals (threshold inhibition), they distort crystal growth so any crystals that do form remain small and non-adherent, and they disperse fine particles so they cannot settle onto the membrane. Typical dose rates range from roughly 1 to 5 ppm, depending on the feed water chemistry and the system recovery. Underdosing invites scaling, while overdosing wastes chemical and can, in extreme cases, contribute to membrane fouling, so an accurate dosing rate matters in both directions.<\/p>\n<p>The <strong>Antiscalant Flow Rate<\/strong> result is the number to program into your metering pump (in mL\/min). The <strong>Volume to be Added<\/strong> and <strong>Weight to be Added<\/strong> results describe the batching step: how much concentrated product to add to the day tank, which is then filled with permeate or demineralized water to make the chosen solution strength. Multiplying the flow rate by the daily operating hours also gives you the chemical consumption, useful for scheduling deliveries and verifying the pump is drawing the expected amount.<\/p>\n<p>If you need dosing-rate calculations for other liquids, the same rate-based logic is used in our <a href=\"https:\/\/wpcalc.com\/en\/medical\/dosage-infusion\/\">dosage infusion calculator<\/a> and <a href=\"https:\/\/wpcalc.com\/en\/medical\/liquid-dose-medicine\/\">liquid dose calculator<\/a>.<\/p>\n<h2>Assumptions, Limitations and Practical Tips<\/h2>\n<ul>\n<li><strong>The dosage is an input, not an output.<\/strong> This calculator converts a known dosage into a pump setting and a batching recipe. The required ppm itself must be determined from a water analysis and scaling projection (e.g., the membrane or antiscalant manufacturer's software).<\/li>\n<li><strong>Units for the day tank.<\/strong> Enter the day tank volume in gallons for the volume and weight results to be correct. The flow rate result is valid with either gallons or liters.<\/li>\n<li><strong>Constant flow assumption.<\/strong> The formula assumes a steady feed flow. If your system flow varies significantly, use a flow-paced dosing pump (interlocked with a flow meter) rather than a fixed mL\/min setting.<\/li>\n<li><strong>Calibrate the pump.<\/strong> Verify the actual output of the metering pump by measuring drawdown over a set time, and recheck after any stroke or frequency change.<\/li>\n<li><strong>Solution quality.<\/strong> Dilute the antiscalant with RO permeate or demineralized water only; hard tap water can react with the product. Follow the manufacturer's guidance on the maximum dilution and shelf life of the prepared solution.<\/li>\n<li><strong>Confirm against the data sheet.<\/strong> Density and recommended dosage ranges vary between products; always cross-check the results with the manufacturer's technical documentation.<\/li>\n<\/ul>\n<h2>SpectraGuard Product Densities<\/h2>\n<p>The calculator applies the following densities (specific gravities) automatically when you select a product:<\/p>\n<table>\n<thead>\n<tr>\n<th>Product<\/th>\n<th>Density (g\/mL)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SpectraGuard 100<\/td>\n<td>1.012<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 111<\/td>\n<td>1.185<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 150<\/td>\n<td>1.470<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 250<\/td>\n<td>1.154<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 350<\/td>\n<td>1.075<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 360<\/td>\n<td>1.109<\/td>\n<\/tr>\n<tr>\n<td>SpectraGuard 370<\/td>\n<td>1.283<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Density is used only to convert the volume of neat product into weight. If you dose a different antiscalant, pick the product with the closest density or ask the supplier for the specific gravity and adjust your batch weight accordingly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculate antiscalant dosing for reverse osmosis (RO) systems. Enter the product, dosage in ppm, day tank concentration and volume, and feed flow to get the dosing pump rate in mL\/min plus the weight and volume of chemical to add to the tank.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[32],"class_list":["post-61608","post","type-post","status-publish","format-standard","hentry","category-medical","tag-pharmacology"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/61608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=61608"}],"version-history":[{"count":4,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/61608\/revisions"}],"predecessor-version":[{"id":66301,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/61608\/revisions\/66301"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=61608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=61608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=61608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}