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The MRL-Screening Test is a modified BRT, which is distinguished by an increased sensitivity towards certain antibiotics and sulfonamides. Besides the statutory maximums (MRLs, laid down by the EU) for betalactam antibiotics, the test also encompasses substances from the sulfonamide group, macrolide group and aminoglycoside group to MRL level. Other substance groups are also detected with greater sensitivity than in the BRT Inhibitor Test.
BRT MRL-Screening Test is especially suitable for examining raw milk and heat treated milk and is particularly suitable for quality assurance as well as for the examination of dairy milk and milk for the production of fermented milk products.
Products
Art.-No.
Article
Description
Shelf life (from production)
3020
BRT MRL-Screening Test
plate for 96 samples
2 months
3021
BRT MRL-Screening Test ESL
plate for 96 samples
6 months
3030
BRT MRL-Screening Test
strips divisible in 96 single samples
2 months
3031
BRT MRL-Screening Test ESL
strips divisible in 96 single samples
6 months
3040
BRT MRL-Screening Test
tubes for single sample
6 months
Storage
6 - 10 ° C
Instructions for use
Remove the sealing foil from the test plate, resp. remove closure from
tube.
Pipette 0.1ml of the milk sample into one well (a second insertion is
also recommended), 0.1ml of the negative control (Inhibitor Free Milk)
into one well and 0.1ml of the positive control (Penicillin G Standard)
into another well.
Seal the test plate with the sealing foil, resp. close tubes and
incubate.
Incubation
Incubate the test plate in a water bath or thermo-block at 65 °C until
the negative control has turned yellow
(2 hrs 30 +/- 15 min)
Evaluation
Remove the milk samples out of the wells and rinse carefully with clear
water. The test results are read from the bottom of the test plate.
Plates can also be read using a spectrophotometer (see link product
information)
Yellow colour: inhibitor-free sample
Blue colour: positive sample, sample contains inhibitors
Instruction manual: BRT MRL-Screening Test
Product information: BRT MRL-Screening Test