The Direct Lactic Acid (DLA) Vial (9 mL) rapidly detects lactic acid microorganism contamination in food products. As Lactic Acid Bacteria grow in the broth medium, the carbon dioxide (CO2) produced diffuses through a membrane layer into a soft agar plug containing a dye indicator. The color change in the dye is read by the instrument. The membrane layer also serves as a barrier, eliminating product interference with the reading frame.
Analyte Lactics
Brand Soleris®
Incubation Time 48 Hours
Limit of Detection Dilute to Specification or Presence /Absence (with pre-incubation)
Package Dimensions 12.00 IN x 11.10 IN x 2.80 IN
Package Weight 4.90 LB
Platform Rapid Microbiology
Quantity per Package 100 vials
Volume 9 mL

  1. Soleris Automated System (BSX32, BSX128, BLX-INS32)
  2. Syringe filter (Fisher 05-713-387)
  3. 10 mL syringe (Fisher 03-377-23)
  4. Butterfield's Phosphate Buffer, 99 mL (BPB-99)
  5. Vancomycin hydrochloride (Sigma 861987)
  6. Amphotericin B solubilized (Sigma A9528) or cycloheximide (sigma C7698) or Ethanol Yeast and Mold Reagent (ETOH-25))
  7. Sterile deionized/distilled water
Optional Heterofermentative Lactic Acid Bacteria Confirmation
  1. LM-126 Lactobacillus MRS broth


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