2012 Promega catalogue

Cell Signaling
Tris Base, Molecular Biology Grade
Product Size Cat.# Price ($)
Tris Base, Molecular Biology Grade 100 g H5133 36.00
For Research Use Only. Not for Use in Diagnostic Procedures.
500 g H5131 102.00
2,500 g H5135 372.00
Description: Tris Base, Molecular Biology Grade, is commonly used for many
molecular biology applications.
Formula: C 4H 11NO 3.
Formula Weight: 121.14.
Form: Crystalized free base.
Properties:
• pH at 25°C of 1M: 10.0–11.5.
• Purity: ≥99.9%.
• A 260 at 1M: ≤0.05.
• A 280 at 1M: ≤0.05.
• Melting Point: 167–172°C.
• Moisture: ≤0.2%.
• Lead: ≤2ppm.
• Magnesium: ≤1ppm.
• Calcium: ≤1ppm.
• Iron: ≤1ppm.
Features:
• Quality Tested: Each lot of Tris Base is tested and certified to be free of
DNase, RNase and protease activity.
Storage Conditions: Store at 22–25°C.
Tris-HCl, Molecular Biology Grade (Tris-
Hydrochloride)
Product Size Cat.# Price ($)
Tris-HCl, Molecular Biology Grade 100 g H5121 63.00
500 g H5123 198.00
For Research Use Only. Not for Use in Diagnostic Procedures.
2,500 g H5125 737.00
Description: Tris-HCl, Molecular Biology Grade, is sometimes used in
combination with Tris base for preparation of Tris-HCl buffers.
Formula Weight: 157.56.
Properties:
• pH at 25°C (0.1M): 4.2–5.0.
• Purity: ≥99.0%.
• A 240 at 1M: ≤0.06.
• A 260, A 280, A 300, A 600 at 1M: ≤0.05.
• Melting Point: 150–152°C.
• Moisture: ≤0.5%.
• Calcium: ≤5ppm.
• Iron: ≤5ppm.
• Lead: ≤1ppm.
• Magnesium: ≤1ppm.
• Manganese: ≤1ppm.
• Copper: ≤1ppm.
• Zinc: ≤1ppm.
Features:
• Quality Tested: Each lot of Tris-HCl is tested and certified to be free of
DNase, RNase and protease activity.
Storage Conditions: Store at 22–25°C.
For complete and up-to-date product information visit: www.promega.com/catalog
Triton ® X-100, Molecular Biology Grade
Product Size Cat.# Price ($)
Triton ® X-100, Molecular Biology Grade 100 ml H5142 52.00
For Research Use Only. Not for Use in Diagnostic Procedures.
500 ml H5141 185.00
Description: Triton ® X-100, Molecular Biology Grade, is a widely used
nonionic surfactant.
Properties:
• Moisture: ≤1.0%.
• Lead: ≤5ppm.
• Iron: ≤5ppm.
• Density at 25°C: 1.0645–1.0655g/ml.
Features:
• Quality Tested: Each lot of Triton ® X-100 is tested and certified to be free
of DNase, RNase and protease activity.
Storage Conditions: Store at 22–25°C.
Tween ® 20, Molecular Biology Grade
Product Size Cat.# Price ($)
Tween ® 20, Molecular Biology Grade 100 ml H5152 52.00
For Research Use Only. Not for Use in Diagnostic Procedures.
500 ml H5151 185.00
Description: Tween ® 20, Molecular Biology Grade, is a nonionic detergent
used for many different molecular biology applications.
Properties:
• Appearance: Clear, yellow, viscous liquid.
• Hydroxyl Number: 96–108.
• Lead: ≤10ppm.
Features:
• Quality Tested: Each lot of Tween ® 20 is tested and certified to be free of
DNase, RNase and protease activity.
Storage Conditions: Store at 22–25°C.
Urea
Product Size Cat.# Price ($)
Urea 1 kg V3171 92.00
For Research Use Only. Not for Use in Diagnostic Procedures.
5 kg V3175 340.00
Description: Urea is a protein denaturant. Urea is qualified for use as the
denaturing component in polyacrylamide gels.
Formula: (NH 2) 2CO.
Formula Weight: 60.06.
Form: Fine, white, free-flowing pastilles.
Properties:
• Purity: ≥99.0%.
• Melting Point: 132–135°C.
• A 280 at 8M in water: ≤0.10.
• Chloride: ≤0.0005%.
• Heavy Metals: ≤0.001%.
• Iron: ≤0.001%.
• Cyanate: none detected.
Storage Conditions: Store at 22–25°C. Protect from moisture.
11
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Biochemicals and Labware
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