During incubation with milk, resazurin sodium salt undergoes reduction (redox) and the colour changes from blue to pink, which indicates highly fluorescent resorufin. then to colourless dihydroresorufin (non fluorescent). The rate of colour change is due to the lowering of the oxidation-reduction potential in the milk, so is an indication of the presence of microbial organisms in the sample.
A standard solution of resazurin is prepared by dissolving one tablet in 50ml of sterile glass-distilled water. One ml of this solution should be added to 10ml of milk for each test. Solutions must be made fresh each day.
Formula: C12H7NO4
MW: 251.17 g/mol
Storage Temperature: Ambient
Appearance: Red to purple tablets
Shape: Round biconvex
Average tablet weight: 240 - 260 mg
Diameter: 7.50 - 8.00 mm
Solubility in water (2 tablets/100 ml): Max. 4.0 min
SUR0155/R1
Our standard delivery is 3-5 working days (where products are available) Monday to Friday, excluding public holidays when you order by 2pm. Details of our returns and cancellation policy can be found in our Returns Policy & Section 11 of our Terms and Conditions. For more information please contact us on 01924 444 577 or Email Us.
For the past fifty years, MacConkey Broth has been the standard medium for the primary isolation of coliform bacteria, and has been recommended for this purpose by the Public Health Laboratory Service Water Committee and the World Health Organisation!
Minor sides are ribbed for a better handling
Larger sides are flat for labelling
Tamper evident red cap with an internal joint
Hermetic closure
Nominal Capacity (ml): 500
Dimensions; W x L x H (mm): 83 x 65 x 135
Mouth Diameter (mm): 28
Material: Polyethylene
Sterility: Sterile
Case Quantity: 24
Dimensions: 165 x 89 x 19cm
Gel filled
Keep their shape during all stages of use: Phase changes at 0 ℃ and returns to gel state after thawing
Suitable for pharmaceuticals, clinical trials, diagnostic kits, chemicals and biologicals
Long lasting, high performance temperature protection
They can be chilled in a freezer, refrigerator or low temperature incubator
Effective when used with insulated shipping containers
Oxoid Milk Agar is made to a formula corresponding to the official medium described in Dept. of Health Memo. 139/ Foods1. It is recommended for performing the plate count test on milks, rinse waters, milk products and ice cream, etc.
The IK FOOD 1.5 is a food sprayer specially manufactured with materials fully compatible for contact with all types of food. Food certification according to European CE and American FDA regulations. It is the best spraying alternative in the food sector.
With the IK Food 1.5 you can spray all types of liquid food such as oil, milk, melted butter, vinegar, water, brine, syrup, etc..
Use the fan nozzle for oils and more viscous substances.
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