The SCM dipslide shows a total count on the front side and coliforms count on the other. E.coli (Escherichia coli) in high levels shows when exposed under UV fluorescent lighting.
It comes in a pack size of 10 slides per box (minimum order of 5 boxes). The slide has a flexible paddle and is located in a shatterproof container.
Plate Count Agar - This agar offers a general count. PCA will detect viable organisms in food and water. It is especially popular for use in the dairy industry.
MacConkey3 Agar with MUG (fluorescent reagent for e.coli testing) - This special formulation of the MacConkey3 agar detects colonies of E.Coli that can be viewed if placed under a UV lamp. This works because the agar supplement (MUG) detects / reacts to ß-glucuronidase (an enzyme produced by e.coli strains). The reaction to the enzyme produces a green/blue fluorescence. It is worth remembering that organisms other than E.Coli may also be ß-glucuronidase positive. As well as this, ß-glucuronidase is produced by most but not all e.coli strains (over 95% of strains produce the enzyme)*. This agar also shows growth for coliforms in general. These colonies can be viewed without a UV lamp.
Identifying E.Coli colonies
The MacConkey 3 Agar on these dipslides includes a chemical within the formulation that helps identify e.coli colonies. When using a long wave UV light, e.coli colonies will glow. Only pink colonies that glow can be presumed to be e.coli. Any non-pink colonies that glow can be interpreted as a negative result for e.coli.
Simply remove the dipslide and immerse in the sample for approx 10 seconds. Remove dipslide and allow to drain for a few seconds, then replace the slide back into the tube and incubate for a minimum of 24 hours (up to a maximum of 48 hours).
A comparison chart is included so you can easily compare your results.
- Food Hygiene
- Environmental samples
|Q||Do I need a specific UV light for this dipslide?|
To get accurate results, you will need a long wave 366nm UV light / lamp. Our E.coli Test Kit includes an appropriate UV lamp: Ecoli Test Kit
Alternatively, you can purchase the UV lamp on its own, here: UV Lamp