Allergen-Shield Walnut is a highly specific sandwich enzyme-linked immunosorbent assay (ELISA) designed for the rapid and reliable determination of walnut residues in food products labeled as walnut -free. When paired with the optional Surface Swabbing Kit, the method extends beyond product testing to include environmental monitoring, allowing users to easily assess surface contamination by allergens and support robust cleaning validation procedures.
■ Robust, accurate and sensitive
■ Protocol uniformity
■ Broad range of validated matrices
■ Reagents ready to use
■ Innovative quantification on working surfaces
■ Portable Reader
■ Single-break strip plate with 48 wells (6 strips) or 96 wells (12 strips)
■ LOD: 1 ppm walnut or 0.17 ppm walnut protein
■ LOQ: 2.5 ppm walnut or 0.43 ppm walnut protein.
■ Quantification Range: 2.5-100 ppm
■ Extended quantification range through sample dilution
■ Recovery of spiked extractions-matrices: 90.9% (CV = 7.2%)
■ Test time: 30 minutes
■ Shelf Life: 12 months
■ Storage: 2-8 °C
■ Reader: BYONOY Absorbance 96 spectrophotometer
■ Software: Prognosis Data Reader (PDR)
