diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Measure/Flow/Mass.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Measure/Flow/Mass.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,122 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category  Zend
+ * @package   Zend_Measure
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd     New BSD License
+ * @version   $Id: Mass.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * Implement needed classes
+ */
+require_once 'Zend/Measure/Abstract.php';
+require_once 'Zend/Locale.php';
+
+/**
+ * Class for handling flow mass conversions
+ *
+ * @category   Zend
+ * @package    Zend_Measure
+ * @subpackage Zend_Measure_Flow_Mass
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Measure_Flow_Mass extends Zend_Measure_Abstract
+{
+    const STANDARD = 'KILOGRAM_PER_SECOND';
+
+    const CENTIGRAM_PER_DAY    = 'CENTIGRAM_PER_DAY';
+    const CENTIGRAM_PER_HOUR   = 'CENTIGRAM_PER_HOUR';
+    const CENTIGRAM_PER_MINUTE = 'CENTIGRAM_PER_MINUTE';
+    const CENTIGRAM_PER_SECOND = 'CENTIGRAM_PER_SECOND';
+    const GRAM_PER_DAY         = 'GRAM_PER_DAY';
+    const GRAM_PER_HOUR        = 'GRAM_PER_HOUR';
+    const GRAM_PER_MINUTE      = 'GRAM_PER_MINUTE';
+    const GRAM_PER_SECOND      = 'GRAM_PER_SECOND';
+    const KILOGRAM_PER_DAY     = 'KILOGRAM_PER_DAY';
+    const KILOGRAM_PER_HOUR    = 'KILOGRAM_PER_HOUR';
+    const KILOGRAM_PER_MINUTE  = 'KILOGRAM_PER_MINUTE';
+    const KILOGRAM_PER_SECOND  = 'KILOGRAM_PER_SECOND';
+    const MILLIGRAM_PER_DAY    = 'MILLIGRAM_PER_DAY';
+    const MILLIGRAM_PER_HOUR   = 'MILLIGRAM_PER_HOUR';
+    const MILLIGRAM_PER_MINUTE = 'MILLIGRAM_PER_MINUTE';
+    const MILLIGRAM_PER_SECOND = 'MILLIGRAM_PER_SECOND';
+    const OUNCE_PER_DAY        = 'OUNCE_PER_DAY';
+    const OUNCE_PER_HOUR       = 'OUNCE_PER_HOUR';
+    const OUNCE_PER_MINUTE     = 'OUNCE_PER_MINUTE';
+    const OUNCE_PER_SECOND     = 'OUNCE_PER_SECOND';
+    const POUND_PER_DAY        = 'POUND_PER_DAY';
+    const POUND_PER_HOUR       = 'POUND_PER_HOUR';
+    const POUND_PER_MINUTE     = 'POUND_PER_MINUTE';
+    const POUND_PER_SECOND     = 'POUND_PER_SECOND';
+    const TON_LONG_PER_DAY     = 'TON_LONG_PER_DAY';
+    const TON_LONG_PER_HOUR    = 'TON_LONG_PER_HOUR';
+    const TON_LONG_PER_MINUTE  = 'TON_LONG_PER_MINUTE';
+    const TON_LONG_PER_SECOND  = 'TON_LONG_PER_SECOND';
+    const TON_PER_DAY          = 'TON_PER_DAY';
+    const TON_PER_HOUR         = 'TON_PER_HOUR';
+    const TON_PER_MINUTE       = 'TON_PER_MINUTE';
+    const TON_PER_SECOND       = 'TON_PER_SECOND';
+    const TON_SHORT_PER_DAY    = 'TON_SHORT_PER_DAY';
+    const TON_SHORT_PER_HOUR   = 'TON_SHORT_PER_HOUR';
+    const TON_SHORT_PER_MINUTE = 'TON_SHORT_PER_MINUTE';
+    const TON_SHORT_PER_SECOND = 'TON_SHORT_PER_SECOND';
+
+    /**
+     * Calculations for all flow mass units
+     *
+     * @var array
+     */
+    protected $_units = array(
+        'CENTIGRAM_PER_DAY'    => array(array('' => '0.00001', '/' => '86400'),    'cg/day'),
+        'CENTIGRAM_PER_HOUR'   => array(array('' => '0.00001', '/' => '3600'),     'cg/h'),
+        'CENTIGRAM_PER_MINUTE' => array(array('' => '0.00001', '/' => '60'),       'cg/m'),
+        'CENTIGRAM_PER_SECOND' => array('0.00001',                               'cg/s'),
+        'GRAM_PER_DAY'         => array(array('' => '0.001', '/' => '86400'),      'g/day'),
+        'GRAM_PER_HOUR'        => array(array('' => '0.001', '/' => '3600'),       'g/h'),
+        'GRAM_PER_MINUTE'      => array(array('' => '0.001', '/' => '60'),         'g/m'),
+        'GRAM_PER_SECOND'      => array('0.001',                                 'g/s'),
+        'KILOGRAM_PER_DAY'     => array(array('' => '1', '/' => '86400'),          'kg/day'),
+        'KILOGRAM_PER_HOUR'    => array(array('' => '1', '/' => '3600'),           'kg/h'),
+        'KILOGRAM_PER_MINUTE'  => array(array('' => '1', '/' => '60'),             'kg/m'),
+        'KILOGRAM_PER_SECOND'  => array('1',                                     'kg/s'),
+        'MILLIGRAM_PER_DAY'    => array(array('' => '0.000001', '/' => '86400'),   'mg/day'),
+        'MILLIGRAM_PER_HOUR'   => array(array('' => '0.000001', '/' => '3600'),    'mg/h'),
+        'MILLIGRAM_PER_MINUTE' => array(array('' => '0.000001', '/' => '60'),      'mg/m'),
+        'MILLIGRAM_PER_SECOND' => array('0.000001',                              'mg/s'),
+        'OUNCE_PER_DAY'        => array(array('' => '0.0283495', '/' => '86400'),  'oz/day'),
+        'OUNCE_PER_HOUR'       => array(array('' => '0.0283495', '/' => '3600'),   'oz/h'),
+        'OUNCE_PER_MINUTE'     => array(array('' => '0.0283495', '/' => '60'),     'oz/m'),
+        'OUNCE_PER_SECOND'     => array('0.0283495',                             'oz/s'),
+        'POUND_PER_DAY'        => array(array('' => '0.453592', '/' => '86400'),   'lb/day'),
+        'POUND_PER_HOUR'       => array(array('' => '0.453592', '/' => '3600'),    'lb/h'),
+        'POUND_PER_MINUTE'     => array(array('' => '0.453592', '/' => '60'),      'lb/m'),
+        'POUND_PER_SECOND'     => array('0.453592',                              'lb/s'),
+        'TON_LONG_PER_DAY'     => array(array('' => '1016.04608', '/' => '86400'), 't/day'),
+        'TON_LONG_PER_HOUR'    => array(array('' => '1016.04608', '/' => '3600'),  't/h'),
+        'TON_LONG_PER_MINUTE'  => array(array('' => '1016.04608', '/' => '60'),    't/m'),
+        'TON_LONG_PER_SECOND'  => array('1016.04608',                            't/s'),
+        'TON_PER_DAY'          => array(array('' => '1000', '/' => '86400'),       't/day'),
+        'TON_PER_HOUR'         => array(array('' => '1000', '/' => '3600'),        't/h'),
+        'TON_PER_MINUTE'       => array(array('' => '1000', '/' => '60'),          't/m'),
+        'TON_PER_SECOND'       => array('1000',                                  't/s'),
+        'TON_SHORT_PER_DAY'    => array(array('' => '907.184', '/' => '86400'),    't/day'),
+        'TON_SHORT_PER_HOUR'   => array(array('' => '907.184', '/' => '3600'),     't/h'),
+        'TON_SHORT_PER_MINUTE' => array(array('' => '907.184', '/' => '60'),       't/m'),
+        'TON_SHORT_PER_SECOND' => array('907.184',                               't/s'),
+        'STANDARD'             => 'KILOGRAM_PER_SECOND'
+    );
+}