The strips have been tested on red wine, white wine, homogenized whole milk, cultured buttermilk, yogurt, malt mash, beer and lemonade.
Very dark purple indicates that the diluted sample concentration is greater than 180 mg/L. To obtain a more accurate concentration, the sample should be further diluted and retested. For example, if the sample was diluted 5×, try diluting 21×.
We offer exact volume transfer pipettes as an accessory. For samples requiring a 21× dilution, order the 20 µL transfer pipettes (TP20). For samples requiring a 5× dilution, order the 100 µL transfer pipettes (TP100).
Yes, unused reagents can be stored according to the assay protocol. The strips should be kept in a dry, cool location and protected from light.
The enzymes in the strips need to be around pH 7 to work properly. Your sour beer may be too acidic, so please adjust the pH with NaOH or another base until it is pH ~7 and rerun the strips. If the levels are quite high, you may also want to dilute the sample in water which will make the sample closer to pH 7 as well since high levels of lactate “max out” the strip.
Li, F et al (2021). Limosilactobacillus balticus sp. Nov., Limosilactobacillus agrestis sp. Nov., Limosilactobacillus albertensis sp. Nov., Limosilactobacillus rudii sp. Nov. And Limosilactobacillus fastidiosus sp. Nov., five novel Limosilactobacillus species isolated from the vertebrate gastrointestinal tract, and proposal of six subspecies of Limosilactobacillus reuteri adapted to the gastrointestinal tract of specific vertebrate hosts. International Journal of Systematic and Evolutionary Microbiology, 71(2). Assay: D-Lactic Acid in limosilactobacillus frementation cultures.
To find more recent publications, please click here.
If you or your labs do not have the equipment or scientists necessary to run this assay, BioAssay Systems can perform the service for you.
– Fast turnaround
– Quality data
– Low cost
Please email or call 1-510-782-9988 x 2 to discuss your projects.
For bulk quote or custom reagents, please email or call 1-510-782-9988 x 1.
Orders are shipped the same day if placed by 2pm PST
Shipping: RT
Carrier: USPS
Delivery: 2-6 days (US), 6-15 days (intl)
Storage: RT upon receipt
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