MHA000P2N

Wallerstein Nutrient Broth

ready-to-use, capacity 2 mL, suitable for microbiology, for bacteria, for molds, for yeasts

• 동의어(들): WL Nutrient broth, WLNB, Wallerstein Laboratory Nutrient Broth
• UNSPSC 코드: 41106225
• eCl@ss: 32160801
• NACRES: NA.74

속성

• 무균: sterile
• Quality Level: 100
• 양식: liquid
• 유통기한: 12 mo.
• 특징: ready-to-use
• 포장: pack of 50 tests
• 용량: 2 mL
• filling volume: 2 mL
• 색상: slightly opalescent green-blue
• 입력: sample type bottled water; sample type beer; sample type sport drink; sample type cider; sample type food(s); sample type beverage(s); sample type wine; sample type cosmetics; sample type soft drink; sample type beverage(s)
• pH: 5.5±0.2 (25.0 °C)
• 응용 분야: environmental; food and beverages; industrial qc; microbiology
• 호환성: for use with MF-method; for use with Microfil^®; for use with MicropreSure^®; for use with Milliflex^®
• 배송 상태: wet ice
• 저장 온도: 2-8°C
• 적합성: bacteria; molds; yeasts

설명

일반 설명

Wallerstein Nutrient Broth is recommended for the isolation and cultivation of yeasts, molds and bacteria that grow in a low pH environment mainly in the beverage industry. Yeast extract in the medium is a source of trace elements, vitamins and amino acids. Peptone provides nitrogen, amino acids and carbon. Dextrose is a source of carbohydrates. Monopotassium phosphate buffers the media. Potassium chloride, calcium chloride, and ferric chloride are essential ions to help to maintain osmotic balance. Magnesium sulfate and manganese sulfate are sources of divalent cations. Bromocresol green is the pH indicator. The WL Nutrient medium plate incubated under aerobic conditions enables the growth of mainly yeast colonies, acetic acid bacteria, flavobacterium, proteus and thermophilic bacteria and under anaerobic condition enables the growth of lactic acid bacteria and Pediococcus. Bacterial colonies appear as non-pigmented to white, with a smooth or rough texture. Yeast appears as large creamy to white colonies.

애플리케이션

Wallerstein Nutrient Broth is used in the examination of materials encountered in brewing and for industrial fermentations containing mixed flora of yeast and bacteria. It is used in the beverage industry to detect bacteria, yeast, and mold in wines, beer and other fermentation products.

특징 및 장점

• Ready-to-use Liquid ampoule media solve numerous problems in microbiology laboratories where time, equipment, and trained personnel are often in short supply.
• They are available in convenient, single-test 2 mL plastic ampoules, eliminating the manipulation of glass ampoules and avoiding the waste and spoilage associated with bulk packaged media.

규격

Incubation Temperature: 35 °C ± 2 for bacteria; 30 °C ± 2 for yeasts and molds

Incubation Time: 48–72 hrs

분석 메모

Bacterial colonies can appear non-pigmented to white, with a smooth or rough texture. Yeast appear as creamy, white larger colonies

QC organisms
L. fermentum (ATCC 9338)

S. cerevisiae (ATCC 9763)

Target Microorganisms: Lactic acid bacteria, yeast and mold

법적 정보

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

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

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

안전성 정보

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable