1.01614

琼脂

granulated, purified and free from inhibitors, suitable for microbiology

• 别名: 琼脂-琼脂, 胶琼脂
• 线性分子式: (C₁₂H₁₈O₉)_n
• CAS号: 9002-18-0
• MDL號碼: MFCD00081288
• 分類程式碼代碼: 41106212
• 酶委員會索引編號: 232-658-1
• NACRES: NA.74

属性

• 生物源: algae
• 品質等級: 200
• 形狀: solid
• 效力: 11000 mg/kg LD₅₀, oral (Rat)
• 儲存期限: limited shelf life, expiry date on the label
• 包裝: pkg of 1 kg
• pH值: 6.8 (20 °C, 100 g/L in H₂O)
• mp: 90 °C
• 溶解度: slightly soluble 20 g/L
• 體積密度: 550 kg/m³
• 應用: microbiology
• 儲存溫度: 15-25°C
• InChI: 1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1
• InChI 密鑰: GYYDPBCUIJTIBM-DYOGSRDZSA-N

说明

一般說明

Agar is widely used in microbiology as a solidifying agent in microbial culture media. It is a polysaccharide derived from seaweed and is primarily composed of agarose. Agar is a mostly inert substance, which makes it an ideal material for microbial culture media because it doesn’t interfere with the growth of microorganisms. Agar can solidify media, allowing microorganisms to grow in a solid environment, which facilitates the formation of distinct colonies and selective isolation of specific microorganisms. Agar is also used in the preparation of selective and differential media, which can provide additional nutrients or other chemical substances to promote or inhibit the growth of specific microorganisms selectively. Agar is sterilized by autoclaving and then poured into Petri dishes, where it can cool and solidify, forming the surface for microbial growth.

應用

Agar is commonly used as a solidifying agent in many microbial culture media for the growth and identification of bacteria, yeasts and molds from various pharmaceutical, environmental, food and beverage samples.

特點和優勢

Our Granulated media are:

• Safer - Significant reduction of inhalation of toxic and allergenic substances resulting in fewer allergic responses. Less contamination of working tools and environment
• Accurate - No separation of components and no clumping, even under humid or warm conditions, ensure a uniform product with higher performance accuracy
• Fast - Rapid and uniform dissolution in water
• Easier - Easier handling and weighing due to the better flow properties
• Reliable - Homogenous distribution of ingredients guarantees high reproducibility even if only small amounts are used.

聯結

Replaces: 1.01614.5007

分析報告

Appearance (colour): brownish-yellow
Appearance (description): granules
Identity (NIR): passes test
Identity (Iodine - test): passes test
Identity (Solidification point): passes test
Identity (Turbidity - test): passes test
Solidification point: 32 - 36 °C
Ca (Calcium): ≤ 0.5 %
Mg (Magnesium): ≤ 0.1 %
Sulfated ash (600 °C): ≤ 6 %
Loss on drying (105 °C; 4 h): ≤ 12 %
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): passes test
Growth (Streptococcus pyogenes ATCC 21059): passes test
Growth (Staphylococcus aureus ATCC 25923 (WDCM 00034)): passes test
Growth (Shigella sonnei ATCC 29930 (WDCM 00127)): passes test
Growth (Streptococcus agalactiae ATCC 13813): passes test
Growth (Streptococcus equinus DSM 20062): passes test
Growth (Streptococcus pneumoniae ATCC 6301): passes test
Growth (Candida albicans ATCC 10231 (WDCM 00054)): passes test
Suitability for microbiology: passes test

安全信息

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1