LS Differential Agar

suitable for microbiology, NutriSelect® Plus

Lactobacillus Streptococcus Differential Agar
Pricing and availability is not currently available.

Quality Level





shelf life

limited shelf life, expiry date on the label


agar, 15 g/L
beef extract, 5 g/L
casein enzymic hydrolysate, 10 g/L
L-cysteine hydrochloride, 0.3 g/L
dextrose, 20 g/L
papaic digest of soybean meal, 5 g/L
sodium chloride, 5 g/L
yeast extract, 5 g/L

mfr. no.

NutriSelect® Plus


bioburden testing: suitable
microbiological culture: suitable
microbiology: suitable (microbial identification)

final pH

6.1±0.2 (25 °C)

Featured Industry

Food and Beverages


nonselective and differential for Lactobacillus spp.
nonselective and differential for Streptococcus spp.

Related Categories


For the maximum growth and differentiation of Lactobacilli and Streptococci on the basis of colonial morphology, T.T.C. reduction and casein reaction.

Preparation Note

Suspend 65.3 g in 1 litre distilled water. Boil to dissolve the medium completely. Sterilize by autoclaving at 121°C for 15 minutes. Cool to 50°C and add the following sterile solutions previously kept warm at 50°C just prior to use; (1) 100 ml of 10% (w/v) aqueous solution of antibiotic free skim milk powder (Cat. No. No. 70166) sterilized at 121°C for 5 minutes.(2) 10 ml of TTC Solution (Cat. No. 17779). Mix well and pour into sterile petri plates.

Legal Information

NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Molecular biology-based methods, like PCR, can be used for lactobacilli detection. However, they are often quite expensive. We provide a revolutionary molecular biology method that is rapid, easy, and cost-effective.
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Today, diverse studies report the benefits of probiotics, such as inhibitory effects on pathogens, aid in the management or prevention of chronic intestinal inflammatory diseases or atopic syndromes, and support to the immune system. Potential beneficial applications abound, researchers continue to evaluate the effictiveness and clarify the mechanisms of action of probiotics.
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