Cell Signaling Glycine, Molecular Biology Grade Product Glycine, Molecular Biology Grade For Research Use Only. Not for Use in Diagnostic Procedures. Description: Glycine is an amino acid used in the preparation of some electrophoresis buffers. Formula Weight: 75.07. Properties: • Purity: ≥99.0%. • Iron: ≤10ppm. • A260 at 1M: ≤0.05. • A280 at 1M: ≤0.05. Features: • Quality Tested: Each lot of Glycine is tested and certified to be free of DNase, RNase and protease activity. Storage Conditions: Store at 22–25°C. Guanidine Thiocyanate, Molecular Grade (Guanidinium Thiocyanate) Product Guanidine Thiocyanate, Molecular Grade For Research Use Only. Not for Use in Diagnostic Procedures. Description: Guanidine Thiocyanate, Molecular Grade, at high concentrations, is a protein denaturant used most commonly for the isolation of intact RNA due to its ability to inhibit RNase. Formula Weight: 118.16. Form: White, crystalline powder. Properties: • Purity: ≥99.0%. • Insolubles: None. • A280 at 6M: ≤0.8. • A300 at 6M: ≤0.1. • A320 at 6M: ≤0.1. • A410 at 6M: ≤0.1. • Moisture: ≤1%. • Melting Point: 118–121°C. • Potassium: ≤50ppm. • Sodium: ≤0.5%. • Zinc: ≤1.5ppm. • Copper: ≤0.5ppm. • Barium: ≤3ppm. • Iron: ≤5ppm. Features: • Quality Tested: Each lot of Guanidine Thiocyanate is tested and certified to be free of DNase, RNase and protease activity. Storage Conditions: Store at 22–25°C. Size Cat.# Price (Fr) 100 g V2791 88.00 For Research Use Only. Not for Use in Diagnostic Procedures. Description: Guanidine-HCl, Molecular Grade, is commonly used for the isolation of intact mRNA from tissues or cultured cells. Formula Weight: 95.53. Form: Fine, colorless or white crystals. Properties: • Purity: ≥99.5%. • A230 at 6M: ≤0.15. • A260 at 6M: ≤0.03. • A280 at 6M: ≤0.02. • Moisture: ≤0.3%. • Melting Point: 186–188°C. • Lead: ≤5ppm. • Zinc: ≤1ppm. • Copper: ≤1ppm. • Iron: ≤5ppm. Features: • Quality Tested: Each lot of Guanidine-HCl is tested and certified to be free of DNase, RNase and protease activity. Storage Conditions: Store at 22–25°C. HEPES, Molecular Biology Grade (free acid) Product HEPES, Molecular Biology Grade (free acid) For Research Use Only. Not for Use in Diagnostic Procedures. Description: HEPES is a biological buffer that functions over a pH range of 6.8 to 8.2. Formula Weight: 238.3. Properties: • Appearance: White, crystalline powder. • Purity: ≥99.5%. • Lead: ≤5ppm. • Iron: ≤5ppm. • Moisture: ≤0.5%. • pH at 25°C (1M): 5.0–6.5. • A260 at 0.1M: ≤0.05. • A280 at 0.1M: ≤0.04. Features: • Quality Tested: Each lot of HEPES is tested and certified to be free of DNase, RNase and protease activity. Storage Conditions: Store at 22–25°C. Size Cat.# Price (Fr) 100 g H5302 127.00 500 g H5303 508.00 Size Cat.# Price (Fr) 500 g H5071 67.00 1 kg H5073 121.00 Guanidine-HCl, Molecular Biology Grade (Guanidinium Hydrochloride) Product Guanidine-HCl, Molecular Biology Grade Size Cat.# Price (Fr) 100 g H5381 66.00 500 g H5383 248.00 1 For complete and up-to-date product information visit: www.promega.com/catalog 7 Biochemicals and Labware Pagina 10

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