{"id":2395,"date":"2026-10-20T11:24:16","date_gmt":"2026-10-20T11:24:16","guid":{"rendered":"https:\/\/carbocoregcc.com\/how-to-read-calcium-carbonate-tds-coa\/"},"modified":"2026-11-06T17:02:47","modified_gmt":"2026-11-06T17:02:47","slug":"how-to-read-calcium-carbonate-tds-coa","status":"publish","type":"post","link":"https:\/\/carbocoregcc.com\/fr\/how-to-read-calcium-carbonate-tds-coa\/","title":{"rendered":"How to Read Calcium Carbonate Data Sheets and Certificates of Analysis"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2395\" class=\"elementor elementor-2395\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-cc_tds_hero elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc_tds_hero\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;wdt_bg_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_laptop&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_position&quot;:&quot;center center&quot;,&quot;wdt_animation_effect&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc_tds_hero_col\" data-id=\"cc_tds_hero_col\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc_tds_hero_wgt elementor-widget elementor-widget-html\" data-id=\"cc_tds_hero_wgt\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wdt_animation_effect&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"cc-hero-inner\" style=\"font-family: 'Manrope', sans-serif; max-width: 860px; margin: 0 auto; box-sizing: border-box;\">\n  <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 13px; color: #FFAA4A; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 16px;\">\n    CARBONATE DE CALCIUM\n  <\/div>\n  <h2 style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 42px; line-height: 1.25; color: #FFFFFF; margin: 0 0 20px 0;\">\n    Comment lire une fiche technique et un certificat d\u2019analyse de carbonate de calcium\n  <\/h2>\n  <div style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-bottom: 30px;\">\n    Auteur : \u00e9quipe technique CarboCore &nbsp;|&nbsp; Publi\u00e9 : octobre 2026 &nbsp;|&nbsp; 8 min de lecture\n  <\/div>\n  <div style=\"border-top: 1px solid rgba(255, 255, 255, 0.1); width: 100%; margin: 0;\"><\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-cc_tds_body elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc_tds_body\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;wdt_bg_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_laptop&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_position&quot;:&quot;center center&quot;,&quot;wdt_animation_effect&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc_tds_body_col\" data-id=\"cc_tds_body_col\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc_tds_body_wgt elementor-widget elementor-widget-html\" data-id=\"cc_tds_body_wgt\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wdt_animation_effect&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"cc-article-content\" style=\"font-family: 'Manrope', sans-serif; max-width: 860px; margin: 0 auto; box-sizing: border-box; color: #444444;\">\n  <style>\n    .cc-article-content {\n      font-family: 'Manrope', sans-serif;\n      color: #444444;\n    }\n    .cc-article-content h2 {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 700;\n      font-size: 30px;\n      line-height: 1.35;\n      color: #131C23;\n      margin-top: 0;\n      margin-bottom: 20px;\n    }\n    .cc-article-content p {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 400;\n      font-size: 16px;\n      line-height: 1.9;\n      color: #444444;\n      margin-top: 0;\n      margin-bottom: 20px;\n    }\n    .cc-article-section {\n      margin-bottom: 48px;\n    }\n    .cc-table-wrapper {\n      width: 100%;\n      overflow-x: auto;\n      margin: 28px 0;\n      border: 1px solid #EAEAEA;\n      border-radius: 8px;\n    }\n    .cc-table {\n      width: 100%;\n      border-collapse: collapse;\n      text-align: left;\n    }\n    .cc-table th {\n      background-color: #FFAA4A;\n      color: #131C23;\n      font-family: 'Manrope', sans-serif;\n      font-weight: 700;\n      font-size: 14px;\n      padding: 12px 16px;\n      border: 1px solid #EAEAEA;\n    }\n    .cc-table td {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 400;\n      font-size: 14px;\n      color: #444444;\n      padding: 12px 16px;\n      border: 1px solid #EAEAEA;\n    }\n    .cc-table tr:nth-child(even) td {\n      background-color: #F8F9FA;\n    }\n    .cc-table tr:nth-child(odd) td {\n      background-color: #FFFFFF;\n    }\n    .cc-callout {\n      background-color: #F8F9FA;\n      border-left: 3px solid #FFAA4A;\n      border-radius: 8px;\n      padding: 20px 24px;\n      font-family: 'Manrope', sans-serif;\n      font-weight: 400;\n      font-size: 15px;\n      line-height: 1.7;\n      color: #444444;\n      margin: 24px 0 10px 0;\n    }\n    .cc-numbered-item {\n      display: flex;\n      align-items: flex-start;\n      margin-bottom: 16px;\n    }\n    .cc-numbered-item-num {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 700;\n      font-size: 20px;\n      color: #FFAA4A;\n      min-width: 28px;\n      line-height: 1.5;\n      flex-shrink: 0;\n    }\n    .cc-numbered-item-text {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 400;\n      font-size: 16px;\n      line-height: 1.9;\n      color: #444444;\n    }\n    .cc-flag-item {\n      display: flex;\n      align-items: flex-start;\n      margin-bottom: 14px;\n    }\n    .cc-flag-icon {\n      color: #E63946;\n      font-weight: 700;\n      font-size: 18px;\n      line-height: 1.6;\n      margin-right: 12px;\n      flex-shrink: 0;\n    }\n    .cc-flag-text {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 400;\n      font-size: 16px;\n      line-height: 1.9;\n      color: #444444;\n    }\n  <\/style>\n\n  <!-- Sub-section 1 -->\n  <div class=\"cc-article-section\">\n    <h2>Quelle est la diff\u00e9rence entre une TDS et un COA ?<\/h2>\n    <p>Une fiche technique (TDS) d\u00e9crit un grade : ses propri\u00e9t\u00e9s typiques et les limites sur lesquelles le fournisseur s\u2019engage. Un certificat d\u2019analyse (COA) pr\u00e9sente les r\u00e9sultats d\u2019essai d\u2019un lot pr\u00e9cis. La TDS vous dit \u00e0 quoi vous attendre ; le COA prouve ce que vous avez re\u00e7u. Les acheteurs professionnels demandent les deux.<\/p>\n    <p>La fiche de donn\u00e9es de s\u00e9curit\u00e9 (SDS) est un troisi\u00e8me document. Elle couvre les dangers, la manipulation, le stockage et le transport, pas la performance.<\/p>\n  <\/div>\n\n  <!-- Sub-section 2 -->\n  <div class=\"cc-article-section\">\n    <h2>Que doit contenir la TDS d\u2019un carbonate de calcium ?<\/h2>\n\n    <div class=\"cc-table-wrapper\">\n      <table class=\"cc-table\">\n        <thead>\n          <tr>\n            <th>Rubrique<\/th>\n            <th>Ce qu\u2019il faut regarder<\/th>\n            <th>Pourquoi c\u2019est important<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td>Nom du grade<\/td>\n            <td>Code du grade, enrob\u00e9 ou non enrob\u00e9<\/td>\n            <td>Les codes ne sont pas normalis\u00e9s entre fournisseurs<\/td>\n          <\/tr>\n          <tr>\n            <td>Composition chimique<\/td>\n            <td>% CaCO\u2083, % MgCO\u2083, % Fe\u2082O\u2083, % insolubles HCl<\/td>\n            <td>La puret\u00e9 d\u00e9termine la blancheur et la transformation<\/td>\n          <\/tr>\n          <tr>\n            <td>Granulom\u00e9trie<\/td>\n            <td>D50, D97 (ou D98), coupe maximale, refus au tamis de 45 \u00b5m<\/td>\n            <td>Conditionne la dispersion et la finition de surface<\/td>\n          <\/tr>\n          <tr>\n            <td>Optique<\/td>\n            <td>Brillance R(Y) ou R457, blancheur, CIE L*a*b*<\/td>\n            <td>Essentiel pour les produits blancs et de couleur claire<\/td>\n          <\/tr>\n          <tr>\n            <td>Humidit\u00e9<\/td>\n            <td>% \u00e0 105 \u00b0C<\/td>\n            <td>Une humidit\u00e9 \u00e9lev\u00e9e provoque des vides et des d\u00e9fauts de transformation<\/td>\n          <\/tr>\n          <tr>\n            <td>Enrobage (grades enrob\u00e9s)<\/td>\n            <td>Taux d\u2019acide st\u00e9arique, hydrophobie<\/td>\n            <td>Indique le niveau et la qualit\u00e9 du traitement<\/td>\n          <\/tr>\n          <tr>\n            <td>Absorption d\u2019huile<\/td>\n            <td>g\/100 g<\/td>\n            <td>Influe sur la demande en r\u00e9sine ou en liant<\/td>\n          <\/tr>\n          <tr>\n            <td>Masse volumique apparente<\/td>\n            <td>Non tass\u00e9e et tass\u00e9e, g\/cm\u00b3<\/td>\n            <td>R\u00e9glage des doseurs et chargement des conteneurs<\/td>\n          <\/tr>\n          <tr>\n            <td>M\u00e9thodes d\u2019essai<\/td>\n            <td>M\u00e9thode ISO, ASTM ou interne par param\u00e8tre<\/td>\n            <td>Sans m\u00e9thodes, les chiffres ne sont pas comparables<\/td>\n          <\/tr>\n          <tr>\n            <td>Emballage et stockage<\/td>\n            <td>Type de sac, poids net, dur\u00e9e de conservation<\/td>\n            <td>Planification logistique et entrep\u00f4t<\/td>\n          <\/tr>\n          <tr>\n            <td>R\u00e9vision et date<\/td>\n            <td>Num\u00e9ro de version et date d\u2019\u00e9mission<\/td>\n            <td>Garantit que vous d\u00e9tenez la fiche en vigueur<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/div>\n\n  <!-- Sub-section 3 -->\n  <div class=\"cc-article-section\">\n    <h2>Valeur typique ou limite de sp\u00e9cification : pourquoi est-ce important ?<\/h2>\n    <p>Une valeur typique est un r\u00e9sultat moyen ; chaque lot peut se situer au-dessus ou en dessous. Une limite de sp\u00e9cification (par exemple \u00ab humidit\u00e9 \u2264 0,2 % \u00bb) est un engagement que chaque lot doit respecter. Les contrats et le contr\u00f4le \u00e0 r\u00e9ception doivent reposer sur les limites, pas sur les valeurs typiques.<\/p>\n\n    <div class=\"cc-callout\">\n      \u00ab Si une TDS n\u2019indique que des valeurs typiques, demandez au fournisseur quels param\u00e8tres sont garantis et quelle tol\u00e9rance s\u2019applique. \u00bb\n    <\/div>\n  <\/div>\n\n  <!-- Sub-section 4 -->\n  <div class=\"cc-article-section\">\n    <h2>Que doit indiquer un COA ?<\/h2>\n    <p>Un COA utile identifie le grade, le num\u00e9ro de lot, la date de production, la quantit\u00e9 et les r\u00e9sultats des param\u00e8tres cl\u00e9s, chacun par rapport \u00e0 sa limite de sp\u00e9cification. Il doit \u00eatre sign\u00e9 ou \u00e9mis par le service qualit\u00e9 du fournisseur et \u00eatre tra\u00e7able jusqu\u2019\u00e0 l\u2019exp\u00e9dition.<\/p>\n    <p>Chez CarboCore, les codes de lot suivent actuellement le format grade + date de production + s\u00e9quence (par exemple CC10T-261004-01), ce qui relie chaque COA \u00e0 ses sacs et \u00e0 son conteneur.<\/p>\n  <\/div>\n\n  <!-- Sub-section 5 -->\n  <div class=\"cc-article-section\">\n    <h2>Comment comparer les fiches techniques de deux fournisseurs ?<\/h2>\n    <p>Comparez ce qui est comparable.<\/p>\n\n    <div style=\"margin: 24px 0 20px 0;\">\n      <div class=\"cc-numbered-item\">\n        <span class=\"cc-numbered-item-num\">1.<\/span>\n        <span class=\"cc-numbered-item-text\">V\u00e9rifiez que les deux indiquent la m\u00eame r\u00e9f\u00e9rence granulom\u00e9trique (D97, D98 ou coupe maximale).<\/span>\n      <\/div>\n      <div class=\"cc-numbered-item\">\n        <span class=\"cc-numbered-item-num\">2.<\/span>\n        <span class=\"cc-numbered-item-text\">V\u00e9rifiez que les deux utilisent la m\u00eame m\u00e9thode d\u2019essai, notamment pour la granulom\u00e9trie (diffraction laser ou s\u00e9dimentation) et la brillance.<\/span>\n      <\/div>\n      <div class=\"cc-numbered-item\">\n        <span class=\"cc-numbered-item-num\">3.<\/span>\n        <span class=\"cc-numbered-item-text\">Comparez les limites de sp\u00e9cification, pas les valeurs typiques.<\/span>\n      <\/div>\n      <div class=\"cc-numbered-item\">\n        <span class=\"cc-numbered-item-num\">4.<\/span>\n        <span class=\"cc-numbered-item-text\">Demandez trois COA r\u00e9cents \u00e0 chaque fournisseur pour juger de la constance.<\/span>\n      <\/div>\n      <div class=\"cc-numbered-item\" style=\"margin-bottom: 0;\">\n        <span class=\"cc-numbered-item-num\">5.<\/span>\n        <span class=\"cc-numbered-item-text\">Faites un essai sur votre propre ligne : les fiches r\u00e9duisent le choix, les essais le d\u00e9cident.<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Sub-section 6 -->\n  <div class=\"cc-article-section\" style=\"margin-bottom: 0;\">\n    <h2>Signaux d\u2019alerte dans une fiche technique<\/h2>\n\n    <div style=\"margin: 24px 0 0 0;\">\n      <div class=\"cc-flag-item\">\n        <span class=\"cc-flag-icon\">&#10005;<\/span>\n        <span class=\"cc-flag-text\">Aucune m\u00e9thode d\u2019essai indiqu\u00e9e.<\/span>\n      <\/div>\n      <div class=\"cc-flag-item\">\n        <span class=\"cc-flag-icon\">&#10005;<\/span>\n        <span class=\"cc-flag-text\">Granulom\u00e9trie donn\u00e9e par un seul chiffre (\u00ab 5 microns \u00bb) sans valeur D.<\/span>\n      <\/div>\n      <div class=\"cc-flag-item\">\n        <span class=\"cc-flag-icon\">&#10005;<\/span>\n        <span class=\"cc-flag-text\">Pas de num\u00e9ro de r\u00e9vision ni de date d\u2019\u00e9mission.<\/span>\n      <\/div>\n      <div class=\"cc-flag-item\">\n        <span class=\"cc-flag-icon\">&#10005;<\/span>\n        <span class=\"cc-flag-text\">Valeurs identiques pour tous les grades.<\/span>\n      <\/div>\n      <div class=\"cc-flag-item\" style=\"margin-bottom: 0;\">\n        <span class=\"cc-flag-icon\">&#10005;<\/span>\n        <span class=\"cc-flag-text\">Grade enrob\u00e9 sans niveau d\u2019enrobage ni information d\u2019hydrophobie.<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-cc_tds_faq elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc_tds_faq\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;wdt_bg_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_laptop&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_position&quot;:&quot;center center&quot;,&quot;wdt_animation_effect&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc_tds_faq_col\" data-id=\"cc_tds_faq_col\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc_tds_faq_wgt elementor-widget elementor-widget-html\" data-id=\"cc_tds_faq_wgt\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wdt_animation_effect&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"cc-faq-section\" style=\"font-family: 'Manrope', sans-serif; max-width: 860px; margin: 0 auto; box-sizing: border-box;\">\n  <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 13px; color: #FFAA4A; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;\">\n    QUESTIONS FR\u00c9QUENTES\n  <\/div>\n  <h2 style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 30px; line-height: 1.35; color: #131C23; margin-top: 0; margin-bottom: 32px;\">\n    Questions fr\u00e9quentes\n  <\/h2>\n\n  <div class=\"cc-faq-card\" style=\"background-color: #FFFFFF; border: 1px solid #EAEAEA; border-left: 3px solid #FFAA4A; border-radius: 12px; padding: 24px; margin-bottom: 20px; box-sizing: border-box;\">\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 17px; color: #131C23; margin-bottom: 10px;\">\n      Une TDS est-elle une garantie ?\n    <\/div>\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 15px; line-height: 1.75; color: #444444;\">\n      Seules les limites de sp\u00e9cification constituent des engagements. Les valeurs typiques d\u00e9crivent la performance moyenne.\n    <\/div>\n  <\/div>\n\n  <div class=\"cc-faq-card\" style=\"background-color: #FFFFFF; border: 1px solid #EAEAEA; border-left: 3px solid #FFAA4A; border-radius: 12px; padding: 24px; margin-bottom: 20px; box-sizing: border-box;\">\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 17px; color: #131C23; margin-bottom: 10px;\">\n      \u00c0 quelle fr\u00e9quence \u00e9mettre un COA ?\n    <\/div>\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 15px; line-height: 1.75; color: #444444;\">\n      Pour chaque lot ou chaque exp\u00e9dition, selon l\u2019accord.\n    <\/div>\n  <\/div>\n\n  <div class=\"cc-faq-card\" style=\"background-color: #FFFFFF; border: 1px solid #EAEAEA; border-left: 3px solid #FFAA4A; border-radius: 12px; padding: 24px; margin-bottom: 20px; box-sizing: border-box;\">\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 17px; color: #131C23; margin-bottom: 10px;\">\n      Qu\u2019est-ce que la brillance R(Y) ?\n    <\/div>\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 15px; line-height: 1.75; color: #444444;\">\n      C\u2019est la r\u00e9flectance mesur\u00e9e sous filtre Y (vert), exprim\u00e9e en pourcentage d\u2019un \u00e9talon blanc. Plus elle est \u00e9lev\u00e9e, plus la mati\u00e8re est brillante.\n    <\/div>\n  <\/div>\n\n  <div class=\"cc-faq-card\" style=\"background-color: #FFFFFF; border: 1px solid #EAEAEA; border-left: 3px solid #FFAA4A; border-radius: 12px; padding: 24px; margin-bottom: 0; box-sizing: border-box;\">\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 17px; color: #131C23; margin-bottom: 10px;\">\n      Pourquoi les valeurs D97 et D98 diff\u00e8rent-elles pour une m\u00eame poudre ?\n    <\/div>\n    <div style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 15px; line-height: 1.75; color: #444444;\">\n      Elles d\u00e9crivent deux points diff\u00e9rents de la distribution. Le D98 est toujours \u00e9gal ou sup\u00e9rieur au D97.\n    <\/div>\n  <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-cc_tds_links elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc_tds_links\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;wdt_bg_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_laptop&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_position&quot;:&quot;center center&quot;,&quot;wdt_animation_effect&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc_tds_links_col\" data-id=\"cc_tds_links_col\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc_tds_links_wgt elementor-widget elementor-widget-html\" data-id=\"cc_tds_links_wgt\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wdt_animation_effect&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"cc-related-section\" style=\"font-family: 'Manrope', sans-serif; max-width: 860px; margin: 0 auto; box-sizing: border-box;\">\n  <style>\n    .cc-related-grid-3 {\n      display: grid;\n      grid-template-columns: repeat(3, 1fr);\n      gap: 16px;\n    }\n    @media (max-width: 768px) {\n      .cc-related-grid-3 {\n        grid-template-columns: 1fr;\n      }\n    }\n    .cc-related-card {\n      background-color: #FFFFFF;\n      border: 1px solid #EAEAEA;\n      border-radius: 12px;\n      padding: 20px;\n      text-decoration: none;\n      display: flex;\n      align-items: center;\n      justify-content: space-between;\n      transition: all 0.2s ease-in-out;\n      box-sizing: border-box;\n    }\n    .cc-related-card:hover {\n      border-color: #FFAA4A;\n      transform: translateY(-2px);\n      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);\n    }\n    .cc-related-card-text {\n      font-family: 'Manrope', sans-serif;\n      font-weight: 600;\n      font-size: 15px;\n      color: #131C23;\n      line-height: 1.4;\n    }\n    .cc-related-card-arrow {\n      color: #FFAA4A;\n      font-size: 20px;\n      font-weight: 700;\n      margin-left: 12px;\n      flex-shrink: 0;\n      transition: transform 0.2s ease;\n    }\n    .cc-related-card:hover .cc-related-card-arrow {\n      transform: translateX(4px);\n    }\n  <\/style>\n\n  <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 13px; color: #FFAA4A; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;\">\n    \u00c0 LIRE AUSSI\n  <\/div>\n  <h2 style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 24px; line-height: 1.35; color: #131C23; margin-top: 0; margin-bottom: 32px;\">\n    Articles et pages associ\u00e9s\n  <\/h2>\n\n  <div class=\"cc-related-grid-3\">\n    <a href=\"https:\/\/carbocoregcc.com\/fr\/how-to-read-calcium-carbonate-tds-coa\/\" class=\"cc-related-card\">\n      <span class=\"cc-related-card-text\">D50, D97 et granulom\u00e9trie expliqu\u00e9s<\/span>\n      <span class=\"cc-related-card-arrow\">&rarr;<\/span>\n    <\/a>\n    <a href=\"https:\/\/carbocoregcc.com\/fr\/how-to-read-calcium-carbonate-tds-coa\/\" class=\"cc-related-card\">\n      <span class=\"cc-related-card-text\">Contr\u00f4le qualit\u00e9 du carbonate de calcium industriel<\/span>\n      <span class=\"cc-related-card-arrow\">&rarr;<\/span>\n    <\/a>\n    <a href=\"https:\/\/carbocoregcc.com\/fr\/industrial-minerals-polymers-glossary\/\" class=\"cc-related-card\">\n      <span class=\"cc-related-card-text\">Glossaire des min\u00e9raux industriels et des polym\u00e8res<\/span>\n      <span class=\"cc-related-card-arrow\">&rarr;<\/span>\n    <\/a>\n  <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-cc_tds_cta elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc_tds_cta\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;wdt_bg_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_laptop&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile_extra&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;wdt_bg_position&quot;:&quot;center center&quot;,&quot;wdt_animation_effect&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc_tds_cta_col\" data-id=\"cc_tds_cta_col\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc_tds_cta_wgt elementor-widget elementor-widget-html\" data-id=\"cc_tds_cta_wgt\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;wdt_animation_effect&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<div class=\"cc-cta-section\" style=\"font-family: 'Manrope', sans-serif; max-width: 860px; margin: 0 auto; box-sizing: border-box; text-align: center;\">\n  <style>\n    .cc-cta-btn {\n      display: inline-block;\n      background-color: #FFAA4A;\n      color: #131C23;\n      font-family: 'Manrope', sans-serif;\n      font-weight: 700;\n      font-size: 15px;\n      border-radius: 30px;\n      padding: 14px 34px;\n      text-decoration: none;\n      transition: all 0.2s ease;\n      box-shadow: 0 4px 12px rgba(255, 170, 74, 0.25);\n    }\n    .cc-cta-btn:hover {\n      background-color: #ffb766;\n      color: #131C23;\n      transform: translateY(-2px);\n      box-shadow: 0 6px 18px rgba(255, 170, 74, 0.35);\n    }\n  <\/style>\n\n  <div style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 13px; color: #FFAA4A; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;\">\n    CONTACTEZ-NOUS\n  <\/div>\n  <h2 style=\"font-family: 'Manrope', sans-serif; font-weight: 700; font-size: 30px; line-height: 1.35; color: #FFFFFF; margin-top: 0; margin-bottom: 16px;\">\n    Demander une TDS ou un \u00e9chantillon\n  <\/h2>\n  <p style=\"font-family: 'Manrope', sans-serif; font-weight: 400; font-size: 16px; line-height: 1.8; color: rgba(255, 255, 255, 0.75); max-width: 680px; margin: 0 auto 32px auto;\">\n    Envoyez-nous votre application et le grade requis. Notre \u00e9quipe technique vous r\u00e9pondra avec la fiche concern\u00e9e et, si cela convient, un \u00e9chantillon pour votre essai de production.\n  <\/p>\n  <div>\n    <a href=\"https:\/\/carbocoregcc.com\/fr\/contact-us\/\" class=\"cc-cta-btn\">\n      Envoyer une demande technique\n    <\/a>\n  <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":3488,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Read a Calcium Carbonate TDS and Certificate of Analysis<\/title>\n<meta name=\"description\" content=\"A buyer&#039;s guide to calcium carbonate technical data sheets and certificates of analysis: what each value means, typical vs guaranteed values and red flags.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/carbocoregcc.com\/fr\/how-to-read-calcium-carbonate-tds-coa\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Read a Calcium Carbonate TDS and Certificate of Analysis\" \/>\n<meta property=\"og:description\" content=\"A buyer&#039;s guide to calcium carbonate technical data sheets and certificates of analysis: what each value means, typical vs guaranteed values and red flags.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/carbocoregcc.com\/fr\/how-to-read-calcium-carbonate-tds-coa\/\" \/>\n<meta property=\"og:site_name\" content=\"CarboCore\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carbocoreminerals\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-20T11:24:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-06T17:02:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/carbocoregcc.com\/wp-content\/uploads\/2026\/11\/carbocore-editorial-labdata-pexels-39901214.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/carbocoregcc.com\/wp-content\/uploads\/2026\/11\/carbocore-editorial-labdata-pexels-39901214.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n<script type=\"application\/ld+json\" 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