diff -r f51754bce08e -r 9034e65b0d7a www/js/prod_edit.js
--- a/www/js/prod_edit.js	Sat Feb 29 15:42:12 2020 +0100
+++ b/www/js/prod_edit.js	Sun Mar 01 11:23:22 2020 +0100
@@ -118,6 +118,7 @@
    { name: 'log_brew', type: 'int' },
    { name: 'log_fermentation', type: 'int' },
    { name: 'log_ispindel', type: 'int' },
+   { name: 'log_co2pressure', type: 'int' },
    { name: 'inventory_reduced', type: 'int' },
    { name: 'locked', type: 'int' },
    { name: 'eq_name', type: 'string' },
@@ -4125,6 +4126,7 @@
   $('#BLog').jqxButton({ disabled: (dataRecord.log_brew) ? false : true});
   $('#FLog').jqxButton({ disabled: (dataRecord.log_fermentation) ? false : true});
   $('#ILog').jqxButton({ disabled: (dataRecord.log_ispindel) ? false : true});
+  $('#CLog').jqxButton({ disabled: (dataRecord.log_co2pressure) ? false : true});
  }
 
  $('#styleSelect').jqxDropDownList({
@@ -4251,6 +4253,7 @@
    log_brew: dataRecord.log_brew,
    log_fermentation: dataRecord.log_fermentation,
    log_ispindel: dataRecord.log_ispindel,
+   log_co2pressure: dataRecord.log_co2pressure,
    inventory_reduced: dataRecord.inventory_reduced,
    locked: dataRecord.locked,
    eq_name: $('#eq_name').val(),
@@ -5993,6 +5996,11 @@
  $('#bottle_priming_amount,#keg_priming_amount,#bottle_priming_total,#bottle_pressure,#keg_priming_total,#keg_pressure').jqxNumberInput(Show1dec);
  $('#bottle_abv,#keg_abv').jqxNumberInput(Show2dec);
  $('#bottle_carbonation_temp,#keg_carbonation_temp').jqxNumberInput(YeastT);
+ $('#CLog').jqxButton({ template: 'info', width: '150px', theme: theme });
+ $('#CLog').click(function() {
+  // Open log in a new tab.
+  window.open('log_co2pressure.php?code=' + dataRecord.code + '&name=' + dataRecord.name);
+ });
 
  // Tab 12, Tasting
  $('#taste_date').jqxTooltip({ content: 'De proef datum van dit bier.' });