Allergen: Dermatophagoides farinae, Dust Mite Volume: 250µl Mol. Wt: Der f 1: 24 kD and Der f 2: 14 kD ELISA: See product insert. Concentration: See product insert. Formulation: Preservative and carrier-free in sterile, endotoxin-free Phosphate-buffered saline, pH 7.4. Sterile filtered. Storage: Store at -20ºC. Do not allow product to remain at 4°C or room...$475Add to cart