Usages: For isolating , cultivating mold and yeast .
Principle: Potato flour leaching contribute various mold growth; glucose to provide energy; agar as medium coagulant; chloramphenicol inhibit the growth of bacteria.
Formulation(per liter): Infusion from potatoes 200g Glucose 20g Agar 15g Final pH 5.6 ± 0.2
How to use: 1.Suspend 40g in 1L of distilled water , stirring heated to boiling to completely dissolve ,autoclave at 121 for 15 minutes. 2.Diluted and treated samples.
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
Other Products
Bis-propargyl-PEG12
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Product Info
Bis-propargyl-PEG12 has two alkyne groups at both ends of the linker. With the catalyzation of copper, the alkyne groups reacts with azide compounds to form stable triazole linkages. The PEG spacer enhances the water-solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Bis-propargyl-PEG12 has two alkyne groups at both ends of the linker. With the catalyzation of copper, the alkyne groups reacts with azide compounds to form stable triazole linkages. The PEG spacer enhances the water-solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Fourteen discrete fragments ranging from 25 bp to 650 bp in 50 bp increments
Double intensity reference bands at 200 bp and 400 bp
The Norgen MiniSizer 50 bp DNA Ladder is prepared to ensure quality and batch-to-batch consistency. This Ladder contains fourteen discrete fragments ranging from 25 bp to 650 bp in 50 bp increments with double intensity reference bands at 200 bp and 400 bp. The MiniSizer is ideal for PCR product size confirmation.
Contents:
1mL of premixed DNA ladder (0.5µg/10µL) in loading buffer (10mM EDTA, 10% glycerol, 0.015% bromophenol blue, and 0.17% SDS).
MiniSizer 50 bp DNA Ladder (Cat# 11200) – 100 loads
Ladder Properties: • Fourteen discrete bands, ranging from 50 bp to 650 bp • Higher intensity bands at 200 bp and 400 bp for easy reference
Fragment
Size (bp)
Mass (ng)
1
650
61
2
600
46
3
550
36
4
500
30
5
450
35
6
400
85
7
350
27
8
300
25
9
250
16
10
200
54
11
150
33
12
100
21
13
50
17
14
25
14
Recommended Use:
Mix thoroughly. For best results, load 10µL of DNA ladder per well. For precise mass determination with a densitometer, stain gel after electrophoresis using 0.5µg/mL ethidium bromide for 30-40 minutes. The table above shows the size and mass for each band based on 10µL ladder per well.
Storage:
Stable at room temperature. For longer term storage, -20°C is recommended.
This ladder was standardized using 10µL of DNA per lane on a 0.8 cm thick, 13 x 15 cm, 1.0% agarose gel run in TAE buffer.
Salmonella enterica Quantified Bacterial DNA Standard
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Product Info
Overview
Quantified standard to be used as a positive control or PCR quantification standard
Vigorously quantified using multiple methods
Salmonella enterica has emerged as a significant foodborne pathogen that poses a serious public health problem. The symptoms of salmonellosis may include diarrhea, fever, vomiting, and abdominal cramps with elderly, new-born, and immunocompromised individuals the most susceptible. S. enterica is a facultatively anaerobic Gram-negative bacterium that could survive low temperatures and freezing. The majority of the 1.3 billion annual cases of Salmonella-caused human gastroenteritis result from ingestion of contaminated food products, such as raw or undercooked meat, seafood, and eggs, as well as raw or unpasteurized milk and dairy products. Salmonella infections are also contracted following consumption of fresh fruits or vegetables that have been contaminated by infected fertilizer.
Norgen’s Salmonella enterica Quantified Bacterial DNA Standard is prepared from cultured bacteria using Norgen’s sample preparation technology. The purified DNA is quantified vigorously using multiple methods including spectrophotometry, gel densitometry and real-time PCR. It is intended to be used as a positive control or PCR quantification standard for Salmonella enterica.
Upon receipt, store Norgen’s Salmonella enterica Quantified Bacterial DNA Standard at -20oC or lower. Avoid multiple freeze-thaw cycles. If needed, prepare smaller working aliquots and store at -20oC or lower.
