T1438

Todd Hewitt 肉汤

suitable for microbiology, NutriSelect^® Plus

• 分類程式碼代碼: 41171607
• NACRES: NA.85

属性

• 無菌: non-sterile
• 品質等級: 200
• 形狀: powder
• 儲存期限: limited shelf life, expiry date on the label
• 製造商／商標名: NutriSelect^® Plus
• 技術: microbiological culture: suitable
• pH值: 7.8±0.2 (25 °C)
• 應用: clinical testing; food and beverages; microbiology
• 儲存溫度: 2-25°C
• 適合性: nonselective for Streptococcus spp.

说明

一般說明

Todd Hewitt Broth is used for cultivation of haemolytic streptococci for different serological tests. This medium has been recommended as an alternative type in epidemiologic studies of group A streptococci as well as pathogenic microorganisms. Todd Hewitt Broth medium is very nutritive by the presence of peptic digest of animal tissue and beef heart infusion. Dextrose stimulates haemolysin production. The medium is well buffered by sodium phosphate and sodium carbonate to neutralize the acid produced during dextrose fermentation. This restricts destruction of antigenic streptococcal haemolysin. It is also found that sodium phosphate has a stimulating effect on the pneumococcal growth. Todd Hewitt Broth can be employed as an alternative to serum broth or horse flesh digest broth for the cultivation of streptococci prior to serological typing.

應用

Recommended for the cultivation of group A hemolytic Streptococci used for serological studies.

Todd Hewitt broth has been used for the culture of various microorganisms, such as Bacillus subtilis and Streptococcus pneumoniae.

成分

组分 (g/L)：
牛心浸粉 500.00
动物组织消化物 20.00
右旋糖 2.00
氯化钠 2.00
磷酸钠 0.40
碳酸钠 2.50

準備報告

Suspend 37 g of Todd Hewitt Broth in 1000 ml of distilled water. Mix well and dispense as desired. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes.

腳註

We offer two media types: the superior granulated GranuCult^® and the cost-efficient powdered NutriSelect^® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

法律資訊

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

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

安全信息

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable
• 個人防護裝備: Eyeshields, Faceshields, Gloves, type N95 (US)