{"product_id":"deep-purple-and-rainbow-indicator","title":"Deep Purple and Rainbow Indicator","description":"\u003ch1 data-streamdown=\"heading-1\" class=\"mt-6 mb-2 font-semibold text-3xl\"\u003eDeep Purple \u0026amp; Rainbow Carbonation Indicators\u003c\/h1\u003e\n\u003cp\u003e\u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003eLiquid pH indicators for measuring carbonation depth in field concrete\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-streamdown=\"heading-2\" class=\"mt-6 mb-2 font-semibold text-2xl\"\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eWhen atmospheric CO₂ penetrates concrete, it reacts with calcium hydroxide in the cement paste to form calcium carbonate—a process called \u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003ecarbonation\u003c\/span\u003e. This reaction lowers the concrete's alkalinity. Once the pH drops below 9, embedded steel becomes vulnerable to corrosion in the presence of moisture and oxygen.\u003c\/p\u003e\n\u003cp\u003eMeasuring carbonation depth is essential for \u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003econdition assessment\u003c\/span\u003e and \u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003ecorrosion evaluation\u003c\/span\u003e of reinforced concrete structures.\u003c\/p\u003e\n\u003ch3 data-streamdown=\"heading-3\" class=\"mt-6 mb-2 font-semibold text-xl\"\u003eSimple Application\u003c\/h3\u003e\n\u003col data-streamdown=\"ordered-list\" class=\"list-inside list-decimal whitespace-normal [li_\u0026amp;]:pl-6\"\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003eSpray the indicator onto a freshly broken concrete surface or newly cut core\u003c\/li\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003eAllow to dry\u003c\/li\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003eRead the color change against the included index to determine pH and carbonation front depth\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 data-streamdown=\"heading-2\" class=\"mt-6 mb-2 font-semibold text-2xl\"\u003eApplications\u003c\/h2\u003e\n\u003cul data-streamdown=\"unordered-list\" class=\"list-inside list-disc whitespace-normal [li_\u0026amp;]:pl-6\"\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003e\n\u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003eCorrosion surveys\u003c\/span\u003e — Identify the cause of reinforcement corrosion\u003c\/li\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003e\n\u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003eService life estimation\u003c\/span\u003e — Assess how far the carbonation front has penetrated\u003c\/li\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003e\n\u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003eCoating \u0026amp; sealer evaluation\u003c\/span\u003e — Monitor the effectiveness of protective treatments or re-alkalization procedures\u003c\/li\u003e\n\u003cli data-streamdown=\"list-item\" class=\"py-1 [\u0026amp;\u0026gt;p]:inline\"\u003e\n\u003cspan data-streamdown=\"strong\" class=\"font-semibold\"\u003eConcrete strength estimation\u003c\/span\u003e — Make rough assessments based on concrete age and relative humidity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProducts\u003c\/h2\u003e\n\u003cdiv class=\"my-4 flex flex-col space-y-2\" data-streamdown=\"table-wrapper\"\u003e\n\u003cdiv class=\"overflow-x-auto\"\u003e\n\u003ctable class=\"w-full border-collapse border border-border\" data-streamdown=\"table\"\u003e\n\u003cthead class=\"bg-muted\/80\" data-streamdown=\"table-header\"\u003e\n\u003ctr class=\"border-border border-b\" data-streamdown=\"table-row\"\u003e\n\u003cth class=\"whitespace-nowrap px-4 py-2 text-left font-semibold text-sm\" data-streamdown=\"table-header-cell\"\u003eModel\u003c\/th\u003e\n\u003cth class=\"whitespace-nowrap px-4 py-2 text-left font-semibold text-sm\" data-streamdown=\"table-header-cell\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody class=\"divide-y divide-border bg-muted\/40\" data-streamdown=\"table-body\"\u003e\n\u003ctr class=\"border-border border-b\" data-streamdown=\"table-row\"\u003e\n\u003ctd class=\"px-4 py-2 text-sm\" data-streamdown=\"table-cell\"\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eRI-7000 Deep Purple Indicator\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"px-4 py-2 text-sm\" data-streamdown=\"table-cell\"\u003eSet of 4 spray bottles, 80 ml each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"border-border border-b\" data-streamdown=\"table-row\"\u003e\n\u003ctd class=\"px-4 py-2 text-sm\" data-streamdown=\"table-cell\"\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eRI-8000 Rainbow Indicator\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"px-4 py-2 text-sm\" data-streamdown=\"table-cell\"\u003eSet of 4 spray bottles, 80 ml each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"mt-6 mb-2 font-semibold text-2xl\" data-streamdown=\"heading-2\"\u003eStandards\u003c\/h2\u003e\n\u003cp\u003eConforms to \u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eBS EN 14630:2006\u003c\/span\u003e — \u003cem\u003eDetermination of carbonation depth in hardened concrete by the phenolphthalein method\u003c\/em\u003e\u003c\/p\u003e","brand":"Germann Instruments","offers":[{"title":"Default Title","offer_id":45141574385846,"sku":null,"price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/3394\/5270\/files\/hylec-controls-Deep-Purple-and-Rainbow-Indicator-Corrosion-Evaluation-Condition-Assessment-germann.jpg?v=1779673366","url":"https:\/\/hyleccontrols.com.au\/products\/deep-purple-and-rainbow-indicator","provider":"Hylec Controls","version":"1.0","type":"link"}