{"id":2009,"date":"2020-10-22T23:32:19","date_gmt":"2020-10-22T21:32:19","guid":{"rendered":"https:\/\/www.vansandberghbieren.nl\/?page_id=2009"},"modified":"2020-10-22T23:32:21","modified_gmt":"2020-10-22T21:32:21","slug":"bitterheid-berekenen","status":"publish","type":"page","link":"https:\/\/www.vansandberghbieren.nl\/?page_id=2009","title":{"rendered":"Bitterheid berekenen"},"content":{"rendered":"\n<script language=\"JavaScript\">\n<!-- To hide from old browsers\n\n\/\/Check input velden\n\nfunction checkNumber(input) {\n        input.value = parseFloat(input.value);\n        if(input.value == null ||          \n           input.value.length == 0 ||\n           input.value == \"NaN\" ||\n           input.value <= 0) {\n                input.value = \"\";\n        }\n        calcBitter(input.form);z\n}\n\nfunction checkGravity(input) {\n        input.value = parseFloat(input.value);\n        if(input.value == null ||          \n           input.value.length == 0 ||\n           input.value == \"NaN\" ||\n           input.value <= 0 || \n           input.value >= 2.0) {\n                input.value = \"\";\n        }\n        calcBitter(input.form);\n}\n\nfunction checkAlpha(input) {\n        input.value = parseFloat(input.value);\n        if(input.value == null ||          \n           input.value.length == 0 ||\n           input.value == \"NaN\" ||\n           input.value <= 0 || \n           input.value > 100) {\n                input.value = \"\";\n        }\n        calcBitter(input.form);\n}\n\n\/\/Bitterheid berekenen\n\nfunction calcBitter(input) {\n    var gravity;\n    var volume;\n    alpha = new Array(5);\n    mass = new Array(5);\n    time = new Array(5);\n    util = new Array(5);\n    mgperl = new Array(5);\n    bu = 0;\n    \n    volume = parseFloat(document.bitter.volume.value);\n    gravity = parseFloat(document.bitter.gravity.value)-1;\n\tdocument.bitter[27].value = 0\n\t\n    for (i=0; i<5; i++) {\n        if(document.bitter[2+i*5].value == \"\" || \n           document.bitter[3+i*5].value == \"\" || \n           document.bitter[4+i*5].value == \"\" || \n           document.bitter.gravity.value == \"\" || \n           document.bitter.volume.value == \"\") { \n\n           \t\tdocument.bitter[5+(i*5)].value = \"\";\n            \tdocument.bitter[6+(i*5)].value = \"\";\n        }\n        else {\n            alpha[i] = parseFloat(document.bitter[2+i*5].value)\/100;\n            mass[i] = parseFloat(document.bitter[3+i*5].value);\n            time[i] = parseFloat(document.bitter[4+i*5].value);\n                \n            mgperl[i] = alpha[i]*mass[i]*1000\/volume;\n            util[i] = 1.65*Math.pow(0.000125, gravity)*(1-Math.exp(-0.04*time[i]))\/4.15;\n\t\t\t\t\n\t\t\tdocument.bitter[5+i*5].value = Math.round(100*util[i]);\n\t\t\tdocument.bitter[6+i*5].value = Math.round(mgperl[i]*util[i]);\n\t\t\tbu += (mgperl[i]*util[i]);\n                \n            if(document.bitter[5+i*5].value == null || \n               document.bitter[5+i*5].value.length == 0 || \n               document.bitter[5+i*5].value == \"NaN\") {\n\n                \tdocument.bitter[5+i*5].value = \"\";\n            }\n\n            if(document.bitter[6+i*5].value == null || \n               document.bitter[6+i*5].value.length == 0 || \n               document.bitter[6+i*5].value == \"NaN\") {\n\n                \tdocument.bitter[6+i*5].value = \"\";\n            }\n   \t    }\n    }\n    document.bitter.bu_total.value = Math.round(bu);\n}\n\n\/\/ Stop hiding-->\n<\/script>\n\n<P>\nVia onderstaand formulier kun je de bitterheid in IBU berekenen van je bier. Vul het formulier in en klik op Bereken De totale IBU&#8217;s geven dan aan hoe bitter je bier word. Je kunt 5 hopgiften meegeven in het formulier.\n\nVul eerst het SG in wat je gemeten hebt bij het begin van het koken. Dan het volume van het uiteindelijke bier wat in je gistvat zit. Daarna kun je per hopworp het percentage alfazuur, de hoeveelheid hop en de kooktijd invullen. Door op Bereken te klikken word de rendement en IBU per hopgift berekend. Onderin vind je dan de bitterheid van je bier terug. \n<\/P>\n\n<P>\n  De calculator gebruikt de formule van <a HREF=\"http:\/\/www.realbeer.com\/hops\/research.html\" target=\"_blank\" rel=\"noopener noreferrer\">Tinseth<\/A><\/P>\n\n<FORM NAME=\"bitter\">\n\n<TABLE BORDER=\"0\" CELLPADDING=\"10\">\n<TR>\n\t<TD>\n      <B>SG begin koken<\/B><div class=\"input-append\">\n  \t\t<input class=\"input-small\" NAME=\"gravity\" CHARSET=\"0123456789.\" SIZE=\"6\" MIN=\"5\" MAX=\"5\" MAXLENGTH=\"6\" VALUE=\"1.055\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">1.xxx<\/span>\n<\/div><\/TD>\n\t<TD>\n      <B>Volume in het vat<\/B><div class=\"input-append\">\n  \t\t<input class=\"input-small\" NAME=\"volume\" CHARSET=\"0123456789.\" SIZE=\"6\" MIN=\"1\" id=\"appendedInput\" MAX=\"5\" MAXLENGTH=\"6\" VALUE=\"25\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">liter<\/span>\n      <\/div><\/TD>\n<\/TR>\n\n<\/TABLE>\n<P>\n\n<\/P>\n<TABLE BORDER=\"0\" CELLPADDING=2>\n<TR>\n\t<TH>Alfazuur<\/TH>\n\t<TH>Hop<\/TH>\n\t<TH>Kooktijd<\/TH>\n\t<TH>Rendement<\/TH>\n\t<TH>IBU<\/TH>\n<\/TR>\n<TR>\n\n\t<TD><div class=\"input-prepend input-append\">\n  \t<span class=\"add-on\">Hopgift 1<\/span><input class=\"input-small\" id=\"prependedInput\" NAME=\"alpha1\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"5\" MAXLENGTH=\"5\" VALUE=\"5.0\" onChange=checkAlpha(this) type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"mass1\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" VALUE=\"30\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">gr<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"time1\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" VALUE=\"60\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">min.<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"util1\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"2\" MAXLENGTH=\"2\" type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n  \t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu1\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" type=\"text\"><\/div><\/TD>\n<\/TR>\n  \n<TR>\n\t<TD><div class=\"input-prepend input-append\">\n  \t<span class=\"add-on\">Hopgift 2<\/span><input class=\"input-small\" id=\"prependedInput\" NAME=\"alpha2\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"5\" MAXLENGTH=\"5\" onChange=checkAlpha(this) type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"mass2\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">gr<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"time2\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">min.<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"util2\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"2\" MAXLENGTH=\"2\" type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n  \t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu2\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" type=\"text\"><\/div><\/TD>\n      \n<TR>\n\t<TD><div class=\"input-prepend input-append\">\n  \t<span class=\"add-on\">Hopgift 3<\/span><input class=\"input-small\" id=\"prependedInput\" NAME=\"alpha3\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"5\" MAXLENGTH=\"5\" onChange=checkAlpha(this) type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n      \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"mass3\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">gr<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"time3\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">min.<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"util3\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"2\" MAXLENGTH=\"2\" type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n  \t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu3\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" type=\"text\"><\/div><\/TD>\n<\/TR>\n<TR>\n\t<TD><div class=\"input-prepend input-append\">\n  \t<span class=\"add-on\">Hopgift 4<\/span><input class=\"input-small\" id=\"prependedInput\" NAME=\"alpha4\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"5\" MAXLENGTH=\"5\" onChange=checkAlpha(this) type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"mass4\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">gr<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"time4\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">min.<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"util4\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"2\" MAXLENGTH=\"2\" type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n  \t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu4\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" type=\"text\"><\/div><\/TD>\n<\/TR>\n<TR>\n\t<TD><div class=\"input-prepend input-append\">\n  \t<span class=\"add-on\">Hopgift 5<\/span><input class=\"input-small\" id=\"prependedInput\" NAME=\"alpha5\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"5\" MAXLENGTH=\"5\" onChange=checkAlpha(this) type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"mass5\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">gr<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"time5\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"5\" MAXLENGTH=\"5\" onChange=checkNumber(this) type=\"text\"><span class=\"add-on\">min.<\/span><\/div><\/TD>\n  \n\t<TD><div class=\"input-prepend input-append\"><input class=\"input-small\" NAME=\"util5\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" \n    \tMAX=\"2\" MAXLENGTH=\"2\" type=\"text\"><span class=\"add-on\">%<\/span><\/div><\/TD>\n  \n  \t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu5\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" type=\"text\"><\/div><\/TD>\n<\/TR>\n    \n  <TR>\n\t<TD COLSPAN=3><\/TD>\n\t<TD valign=\"top\" align=\"center\"><A HREF=\"JavaScript:calcBitter(this.form)\"><button class=\"btn\" type=\"button\">Bereken<\/button><\/A>&nbsp;<input class=\"btn\" type=\"reset\" value=\"Reset\"><\/TD>\n\t<TD><div class=\"input-prepend\"><input class=\"input-small\" NAME=\"bu_total\" CHARSET=\"0123456789.\" SIZE=\"5\" MIN=\"1\" MAX=\"3\" MAXLENGTH=\"3\" placeholder=\"Totaal\" type=\"text\"><\/div>\n<\/TR>\n\n  \n<\/TABLE>\n<\/FORM>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Via onderstaand formulier kun je de bitterheid in IBU berekenen van je bier. Vul het formulier in en klik op Bereken De totale IBU&#8217;s geven dan aan hoe bitter je bier word. Je kunt 5 hopgiften meegeven in het formulier. Vul eerst het SG in wat je gemeten hebt bij het begin van het koken. Dan het volume van het uiteindelijke bier wat in je gistvat zit. Daarna kun je per hopworp het percentage alfazuur, de hoeveelheid hop en de kooktijd invullen. Door op Bereken te klikken word de rendement en IBU per hopgift berekend. Onderin vind je dan de bitterheid van je bier terug. De calculator gebruikt de formule van Tinseth SG begin koken 1.xxx Volume in het vat liter Alfazuur Hop Kooktijd Rendement IBU Hopgift 1% gr min. % Hopgift 2% gr min. % Hopgift 3% gr min. % Hopgift 4% gr min. % Hopgift 5% gr min. % Bereken&nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2009","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/Pa96MF-wp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/pages\/2009","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2009"}],"version-history":[{"count":3,"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/pages\/2009\/revisions"}],"predecessor-version":[{"id":2012,"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=\/wp\/v2\/pages\/2009\/revisions\/2012"}],"wp:attachment":[{"href":"https:\/\/www.vansandberghbieren.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}