{"id":1184,"date":"2022-12-21T17:09:49","date_gmt":"2022-12-21T16:09:49","guid":{"rendered":"https:\/\/scispx.com\/instruments\/variref\/"},"modified":"2026-04-23T15:22:24","modified_gmt":"2026-04-23T13:22:24","slug":"variref-refractometre-pleine-plage","status":"publish","type":"instruments","link":"https:\/\/scispx.com\/fr\/instruments\/variref\/","title":{"rendered":"VariRef\u00b2"},"content":{"rendered":"<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9fractom\u00e8tre pleine plage<\/h2>\n<h3><strong>Qu\u2019est\u2011ce qu\u2019un r\u00e9fractom\u00e8tre pleine plage\u202f?\u00a0<\/strong><\/h3>\n<p data-start=\"298\" data-end=\"466\">Le VariRef\u00b2 est un r\u00e9fractom\u00e8tre pleine plage de haute pr\u00e9cision, con\u00e7u pour mesurer l\u2019indice de r\u00e9fraction dans une grande vari\u00e9t\u00e9 d\u2019applications tout au long du cycle de vie des produits.<\/p>\n<p data-start=\"468\" data-end=\"764\">Il prend en charge l\u2019analyse d\u2019\u00e9chantillons liquides et solides et associe un contr\u00f4le avanc\u00e9 de la temp\u00e9rature \u00e0 des options de calibration flexibles afin de garantir des r\u00e9sultats pr\u00e9cis et reproductibles. En tant que composant de la plateforme VariFamily, le syst\u00e8me est modulaire, connectable en r\u00e9seau et adapt\u00e9 aux workflows modernes de laboratoire.<\/p>\n<h3><strong>Fonctionnalit\u00e9s principales\u00a0<\/strong><\/h3>\n<p data-start=\"1133\" data-end=\"1251\">Le VariRef\u00b2 est con\u00e7u pour assurer des mesures fiables et efficaces de l\u2019indice de r\u00e9fraction gr\u00e2ce aux caract\u00e9ristiques suivantes\u202f:<\/p>\n<ul data-start=\"1253\" data-end=\"1641\">\n<li data-section-id=\"ppe84\" data-start=\"1253\" data-end=\"1296\">Analyse d\u2019\u00e9chantillons liquides et solides<\/li>\n<li data-section-id=\"1ryiqgn\" data-start=\"1297\" data-end=\"1351\">Calibration multipoints sur toute la plage de mesure<\/li>\n<li data-section-id=\"19strak\" data-start=\"1352\" data-end=\"1398\">Contr\u00f4le rapide de la temp\u00e9rature pour des r\u00e9sultats imm\u00e9diats<\/li>\n<li data-section-id=\"7pc0ee\" data-start=\"1399\" data-end=\"1426\">Utilisation conviviale<\/li>\n<li data-section-id=\"1k0ivit\" data-start=\"1427\" data-end=\"1478\">Nettoyage facile gr\u00e2ce \u00e0 la conception plate de la chambre \u00e0 \u00e9chantillon<\/li>\n<li data-section-id=\"1ysv9yx\" data-start=\"1479\" data-end=\"1509\">Fonctionnement sans entretien<\/li>\n<li data-section-id=\"1h3ets6\" data-start=\"1510\" data-end=\"1553\">Connectivit\u00e9 r\u00e9seau et conception modulaire<\/li>\n<li data-section-id=\"1jfsyjp\" data-start=\"1554\" data-end=\"1597\">Compatibilit\u00e9 avec les syst\u00e8mes ELN et LIMS<\/li>\n<li data-section-id=\"chgb7e\" data-start=\"1598\" data-end=\"1641\">Conformit\u00e9 facultative \u00e0 la norme 21 CFR Part 11<\/li>\n<\/ul>\n<h3><strong>Comment VariRef\u00b2 g\u00e8re-t-il les diff\u00e9rents types d'\u00e9chantillons ?\u00a0<\/strong><\/h3>\n<p data-start=\"1701\" data-end=\"1823\">L\u2019instrument est \u00e9quip\u00e9 d\u2019un compartiment d\u2019\u00e9chantillon r\u00e9glable et de capots de chambre interchangeables pour les \u00e9chantillons liquides et solides.<\/p>\n<p data-start=\"1825\" data-end=\"2000\">La chambre d\u2019\u00e9chantillon pr\u00e9sente une conception plate qui facilite le nettoyage. Pour les \u00e9chantillons difficiles ou dangereux, une version couverte est disponible afin de garantir une manipulation s\u00fbre et une utilisation \u00e0 long terme.<\/p>\n<h3 data-start=\"1825\" data-end=\"2000\"><strong>Applications<\/strong><\/h3>\n<p data-start=\"2736\" data-end=\"2812\">Le VariRef\u00b2 peut \u00eatre utilis\u00e9 pour de nombreuses analyses r\u00e9fractom\u00e9triques, notamment\u202f:<\/p>\n<ul data-start=\"2814\" data-end=\"2947\">\n<li data-section-id=\"15booo8\" data-start=\"2814\" data-end=\"2839\">Enqu\u00eates de puret\u00e9<\/li>\n<li data-section-id=\"1kikhes\" data-start=\"2840\" data-end=\"2865\">Identification de l'\u00e9chantillon<\/li>\n<li data-section-id=\"d4of31\" data-start=\"2866\" data-end=\"2904\">Contr\u00f4le de la dilution et de la concentration<\/li>\n<li data-section-id=\"c5ce92\" data-start=\"2905\" data-end=\"2947\">D\u00e9termination de la composition de la substance<\/li>\n<\/ul>\n<p data-start=\"2949\" data-end=\"3058\">Il convient \u00e0 l\u2019analyse de liquides organiques, de mati\u00e8res premi\u00e8res et d\u2019\u00e9chantillons solides tels que les films optiques, le verre ou les fibres.<\/p>\n<p data-start=\"3060\" data-end=\"3098\"><strong>Applications industrielles typiques\u202f:<\/strong><\/p>\n<ul data-start=\"3099\" data-end=\"3288\">\n<li data-section-id=\"d07e34\" data-start=\"3099\" data-end=\"3176\">Aliments et boissons (par exemple Brix, production de bi\u00e8re, teneur en sucre, vinification)<\/li>\n<li data-section-id=\"h28ktp\" data-start=\"3177\" data-end=\"3210\">Industrie pharmaceutique et cosm\u00e9tique<\/li>\n<li data-section-id=\"lxsyul\" data-start=\"3211\" data-end=\"3250\">Analyse chimique et p\u00e9trochimique<\/li>\n<li data-section-id=\"14tyjjf\" data-start=\"3251\" data-end=\"3288\">Biotechnologie et contr\u00f4le de la qualit\u00e9<\/li>\n<\/ul>\n<p data-start=\"3290\" data-end=\"3411\">D\u2019autres applications incluent la mesure de la salinit\u00e9, la surveillance des fluides de refroidissement, les huiles essentielles, les \u00e9mulsions, les hydrocarbures et bien d\u2019autres.<\/p>\n<h3 data-section-id=\"1iglksd\" data-start=\"2007\" data-end=\"2044\"><strong>Comment fonctionne le contr\u00f4le de la temp\u00e9rature ?<\/strong><\/h3>\n<p data-start=\"2046\" data-end=\"2117\">Le VariRef\u00b2 utilise un syst\u00e8me Peltier \u00e0 double isolation pour la r\u00e9gulation de la temp\u00e9rature.<\/p>\n<p data-start=\"2119\" data-end=\"2132\"><strong>Cela permet :<\/strong><\/p>\n<ul data-start=\"2133\" data-end=\"2243\">\n<li data-section-id=\"1jjasud\" data-start=\"2133\" data-end=\"2165\">Des ajustements rapides de la temp\u00e9rature<\/li>\n<li data-section-id=\"rfvwa0\" data-start=\"2166\" data-end=\"2209\">Une r\u00e9duction de l\u2019influence des conditions ambiantes<\/li>\n<li data-section-id=\"1rgnmdr\" data-start=\"2210\" data-end=\"2243\">Des conditions de mesure stables et reproductibles<\/li>\n<\/ul>\n<h3><strong>Utilisation et connectivit\u00e9\u00a0<\/strong><\/h3>\n<p data-start=\"2296\" data-end=\"2378\">L\u2019instrument est pilot\u00e9 par le logiciel Aquisys3, accessible via\u202f:<\/p>\n<ul data-start=\"2379\" data-end=\"2494\">\n<li data-section-id=\"1br4rp8\" data-start=\"2379\" data-end=\"2417\">Une interface utilisateur int\u00e9gr\u00e9e de 7 pouces<\/li>\n<li data-section-id=\"1992wue\" data-start=\"2418\" data-end=\"2494\">Un acc\u00e8s \u00e0 distance par navigateur web, tel que Google Chrome, sur des appareils externes<\/li>\n<\/ul>\n<p data-start=\"2496\" data-end=\"2684\">Gr\u00e2ce \u00e0 son int\u00e9gration dans la plateforme VariFamily, plusieurs utilisateurs peuvent travailler simultan\u00e9ment avec le syst\u00e8me. Par exemple, les techniciens peuvent effectuer les mesures tandis que les responsables de laboratoire consultent, v\u00e9rifient et valident les donn\u00e9es.<\/p>\n<h3><strong>Sp\u00e9cifications\u00a0<\/strong><\/h3>\n<div class=\"elementor-element elementor-element-6836d8d elementor-widget elementor-widget-text-editor\" data-id=\"6836d8d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"splitter\">\n<div><\/div>\n<div><\/div>\n<div>\n<table>\n<tbody>\n<tr>\n<th><strong>Sp\u00e9cifications<\/strong><\/th>\n<th><strong>VariRef 301<\/strong><\/th>\n<th><strong>VariRef 401<\/strong><\/th>\n<th><strong>VariRef 501<\/strong><\/th>\n<th><strong>VariRef 601<\/strong><\/th>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Source lumineuse \/ longueur d'onde<\/strong><\/th>\n<td>LED, filtre d'interf\u00e9rence 589 nm<\/td>\n<td>LED, filtre d'interf\u00e9rence 589 nm<\/td>\n<td>LED, filtre d'interf\u00e9rence 589 nm<\/td>\n<td>LED, filtre d'interf\u00e9rence 589 nm<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>\u00c9chelles de mesure<\/strong><\/th>\n<td>Indice de r\u00e9fraction (IR)<br \/>\nSaccharose (Brix)<br \/>\n\u00c9chelles standard incluses<br \/>\nJusqu'\u00e0 1000 \u00e9chelles librement d\u00e9finissables<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Plage de mesure<\/strong><\/th>\n<td>1,3200-1,5800 RI<br \/>\n0-100 Brix<\/td>\n<td>1.30000-1.66000 RI<br \/>\n0-100 Brix<\/td>\n<td>1.27000-1.71000 RI<br \/>\n0-100 Brix<\/td>\n<td>1.27000-1.72000 RI<br \/>\n0-100 Brix<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Exactitude<\/strong><\/th>\n<td>\u00b1 0,0001 RI<br \/>\n\u00b1 0,05 Brix<\/td>\n<td>\u00b1 0,00003 RI<br \/>\n\u00b1 0,02 Brix<\/td>\n<td>\u00b1 0,00002 RI<br \/>\n\u00b1 0,015 Brix<\/td>\n<td>\u00b1 0,00002 RI<br \/>\n\u00b1 0,015 Brix<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Reproductibilit\u00e9 (pr\u00e9cision)<\/strong><\/th>\n<td>\u00b1 0,0001 RI<br \/>\n\u00b1 0,05 Brix<\/td>\n<td>\u00b1 0,00001 RI<br \/>\n\u00b1 0,01 Brix<\/td>\n<td>\u00b1 0,000005 RI<br \/>\n\u00b1 0,006 Brix<\/td>\n<td>\u00b1 0,000005 RI<br \/>\n\u00b1 0,006 Brix<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>R\u00e9solution<\/strong><\/th>\n<td>0,0001 RI<br \/>\n0,05 Brix<\/td>\n<td>0,00001 RI<br \/>\n0,01 Brix<\/td>\n<td>0,000001 RI<br \/>\n0,001 Brix<\/td>\n<td>0,000001 RI<br \/>\n0,001 Brix<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Contr\u00f4le de la temp\u00e9rature<\/strong><\/th>\n<td>Syst\u00e8me int\u00e9gr\u00e9 de contr\u00f4le de la temp\u00e9rature de l'\u00e9chantillon par effet Peltier<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Plage de r\u00e9gulation de temp\u00e9rature<\/strong><\/th>\n<td>5 \u00b0C \u00e0 80 \u00b0C<\/td>\n<td>5 \u00b0C \u00e0 80 \u00b0C<\/td>\n<td>5 \u00b0C \u00e0 100 \u00b0C<\/td>\n<td>5 \u00b0C \u00e0 100 \u00b0C<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Plage de temp\u00e9rature \u00e9tendue (en option)<\/strong><\/th>\n<td>De -5 \u00b0C \u00e0 105 \u00b0C<\/td>\n<td>De -5 \u00b0C \u00e0 105 \u00b0C<\/td>\n<td>De -5 \u00b0C \u00e0 105 \u00b0C<\/td>\n<td>De -5 \u00b0C \u00e0 105 \u00b0C<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Temps de stabilisation thermique<\/strong><\/th>\n<td>25 \u00b0C \u2192 20 \u00b0C (\u00b1 0,1 \u00b0C) en 1 min<br \/>\n(temp\u00e9rature ambiante 20 \u00b0C)<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Compensation automatique de la temp\u00e9rature<\/strong><\/th>\n<td>Compensation automatique de la temp\u00e9rature Brix selon ICUMSA et d'autres balances \u00e0 compensation de temp\u00e9rature<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Capteur de temp\u00e9rature<\/strong><\/th>\n<td>Capteur Pt1000 \u00e0 4 fils \u00e0 l'int\u00e9rieur du prisme<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Exactitude \/ r\u00e9solution du capteur<\/strong><\/th>\n<td>0,1 \u00b0C \/ 0,01 \u00b0C<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Temp\u00e9rature ambiante<\/strong><\/th>\n<td>5 \u00b0C \u00e0 40 \u00b0C<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Volume minimal de l'\u00e9chantillon<\/strong><\/th>\n<td>600 \u00b5L<br \/>\n&lt; 10 \u00b5L avec insert micro-volume<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Compartiment \u00e9chantillon \/ parties mouill\u00e9es<\/strong><\/th>\n<td>Saphir<br \/>\nFFKM<br \/>\nAcier inoxydable 1.4404<br \/>\n(Hastelloy en option)<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Mat\u00e9riau du bo\u00eetier<\/strong><\/th>\n<td>Aluminium<\/td>\n<td>Aluminium<\/td>\n<td>Aluminium<\/td>\n<td>Aluminium<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Interfaces \/ communication<\/strong><\/th>\n<td>Ethernet<br \/>\nRS232<br \/>\nUSB (Type A)<br \/>\nWLAN (via adaptateur)<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Dimensions (L \u00d7 P \u00d7 H)<\/strong><\/th>\n<td>Avec \u00e9cran : 310 \u00d7 220 \u00d7 250 mm<br \/>\nSans \u00e9cran : 310 \u00d7 220 \u00d7 150 mm<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Poids<\/strong><\/th>\n<td>5,5 kg<\/td>\n<td>5,5 kg<\/td>\n<td>5,5 kg<\/td>\n<td>5,5 kg<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Logiciel<\/strong><\/th>\n<td>Aquisys3 Premium<br \/>\nAquisys3 Premium Pharma<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>\u00c9cran (optionnel)<\/strong><\/th>\n<td>\u00c9cran tactile TFT 7<br \/>\n800 \u00d7 480 pixels<br \/>\nCouleurs 16 bits<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Conformit\u00e9 \/ normes<\/strong><\/th>\n<td>Pharmacop\u00e9e internationale<br \/>\nASTM<br \/>\nAOAC<br \/>\nDIN<br \/>\nFDA<br \/>\nICUMSA<br \/>\nAutres<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>P\u00e9riph\u00e9riques \/ fonctionnement<\/strong><\/th>\n<td>Clavier en option<br \/>\nSouris<br \/>\nLecteur de code-barres<br \/>\nCommande \u00e0 distance via PC \/ tablette \/ smartphone<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Alimentation \u00e9lectrique<\/strong><\/th>\n<td>90-265 VAC, 50\/60 Hz<br \/>\nMax. 150 W<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<td>Identique au VariRef 301<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is refractive index measurement important?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Refractive index measurement provides critical information about sample composition, concentration, and identity. 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