Rapid Melamine Tests for Milk
Unisensor was the first company developing a rapid test detecting Melamine in milk to answer the Melamine crisis of 2008 in China. Now some other tests are commercially available in other companies, but MELAMINESENSOR test remains the most sensitive/rapid test compared to the other existing dipstick tests. It can detect 250 ppb of melamine in 5 minutes, without any sample cleaning or processing.
Since Melamine powder is very easy to obtain, not expensive at all and very toxic for health, it remains important to screen in all incoming milk samples in factories, especially in/from Eastern countries.
Download Melamine Folder (PDF, 98 KB)
Table bellow involved summary of (already or soon) existing tests:
| Company | TIME needed (min) |
Sensitivity in MILK (ppb) |
| UNISENSOR | 5 9 |
250 125 |
| ABRAXIS*, £ | 15 | 250 |
| NUTRICOR SRO | 5 | 500 |
| BEIJING WANGER BIOTECH | 10 | 1000 |
| ENVIROLOGIX | 5 | 2500 |
| ROMERLAB £ (in development) | ? | 500 |
| IDEXX (to confirm) | 10 | 300 |
Download MelamineSensor brochure (PDF, 879 KB)
New ABRAXIS melamine strip test is the most sensitive strip test after MELAMINESENSOR. A good point for this test is that all freeze-dried reagents are directly involved in the dipstick pad but disadvantage is that:
- It needs 15 minutes of incubation
- Test line signals are very weak
- No optical Reader available, giving rise to many “false positive” results
ABRAXIS and ROMERLAB have also good ELISA (96-well plate) tests that are more sensitive than all dipstick devices (LoD up to 10 ppb), but these ELISA tests require sample processing and require more than 50 minutes for analysis, which is more appropriate for lab purpose.
NOTE : MELAMINESENSOR is compatible with Pet Feeds matrices, but test is not yet developed. Having in mind the “Pet Food Melamine crisis of 2007 in USA”, if you have commercial interest for this application, please let us known as well as your “suitable” limit of detection in these matrices.
Watch the demo video on this site at:
http://www.primepharma.co.za/news/13/25/Melamine-Quick-Test-Demo/
or on our blog:
http://referral.experts.za.net/melamine-quick-test-demo/
<table style="border: medium none; border-collapse: collapse;" border="1" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td style="border: 1pt solid black; padding: 0cm 5.4pt; width: 203.85pt; background: none repeat scroll 0% 0% #bfbfbf;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">Company</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; width: 127.6pt; background: none repeat scroll 0% 0% #bfbfbf; border: 1pt 1pt 1pt medium solid solid solid none black black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">TIME needed</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">(min)</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; width: 129.15pt; background: none repeat scroll 0% 0% #bfbfbf; border: 1pt 1pt 1pt medium solid solid solid none black black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">Sensitivity in MILK</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">(ppb)</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">UNISENSOR</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">9</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">250</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">125</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ABRAXIS*, £</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">15</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">250</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">NUTRICOR SRO</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">BEIJING WANGER BIOTECH</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">10</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">1000</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ENVIROLOGIX</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">2500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ROMERLAB £ (in development)</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">?</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">IDEXX (to confirm)</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">10</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">300</span></span></div>
</td>
</tr>
</tbody>
</table>
<tbody>
<tr>
<td style="border: 1pt solid black; padding: 0cm 5.4pt; width: 203.85pt; background: none repeat scroll 0% 0% #bfbfbf;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">Company</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; width: 127.6pt; background: none repeat scroll 0% 0% #bfbfbf; border: 1pt 1pt 1pt medium solid solid solid none black black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">TIME needed</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">(min)</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; width: 129.15pt; background: none repeat scroll 0% 0% #bfbfbf; border: 1pt 1pt 1pt medium solid solid solid none black black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">Sensitivity in MILK</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">(ppb)</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">UNISENSOR</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">9</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">250</span></span></div>
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">125</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ABRAXIS*, £</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">15</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">250</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">NUTRICOR SRO</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">BEIJING WANGER BIOTECH</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">10</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">1000</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ENVIROLOGIX</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">5</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">2500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">ROMERLAB £ (in development)</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">?</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">500</span></span></div>
</td>
</tr>
<tr>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 203.85pt; border: medium 1pt 1pt none solid solid #ece9d8 black black;" width="272" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">IDEXX (to confirm)</span></span></div>
<div><span style="font-size: xx-small;"> </span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 127.6pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="170" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">10</span></span></div>
</td>
<td style="padding: 0cm 5.4pt; background-color: transparent; width: 129.15pt; border: medium 1pt 1pt medium none solid solid none #ece9d8 black black #ece9d8;" width="172" valign="top">
<div><span style="font-size: 11pt;"><span style="font-size: xx-small;">300</span></span></div>
</td>
</tr>
</tbody>
</table>