NovaStreak: TTC / Malt # BD-522
Microbial Contamination Monitoring Device
Plate Count Agar with TTC and Malt Agar
NOVASTREAK MCMD BD-522 is a semi-quantitative screening culture device for sampling and assessing microbial contamination of food and dairy products, industrial fluids and surfaces of sanitary importance.
SUMMARY AND EXPLANATION
NOVASTREAK MCMD BD-522 comprises a plastic paddle with two types of agar attached back-to-back, housed in a closed transparent plastic tube. A ring with elongated prongs is attached to the end of the paddle so that there are prongs on each side of the slide. The ends of the prongs are dipped into the liquid sample. Upon re-insertion into the plastic tube, the prongs are prevented from moving and the agar surfaces are inoculated with the sample as the paddle passes over the prongs. The result is a series of streaks of decreasing bacterial concentration, which permits isolation of single colonies even when the original bacterial population of the sample was as high as 107 organisms per milliliter. NOVASTREAK MCMD BD-522 can be used to monitor microbial growth wherever the potential may exceed 102 microorganisms in ml of sample. NOVASTREAK MCMD BD-522 unit consists of two different agar modifications: Plate Count Agar (PCA) supplemented with triphenyltetrazolium chloride (TTC) and Malt Agar (MA), attached back-to-back on a plastic sampling paddle, which is permanently fastened to the cap for comfort of handling during use. Plate Count Agar is made according to the American Public Health Association (APHA) formulation. It is recommended for obtaining plate counts for milk and other dairy products and may also be used to determine the sanitary quality of foods, water and other materials. The use of malt and malt extract for the propagation of yeasts and molds is quite common.
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