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2 at 25°C Suspend 30 gram powdered medium in 1 litre distilled water
Yeast Nitrogen Base is based upon the formulation of Yeast Agar except that Ammonium Sulfate is the sole nitrogen source and that addition of carbon source is required
7 gram powdered medium in 1 litre distilled water
slightly soluble in alcohol and methanol Assay (HPLC) ≥98% Loss on drying <0
2% CAS 207291-81-4
HEPES Size:1000g 2 at 25°C Suspend 30C8H18N2O4S=238. 3 Specifications HEPES >99. 5% Loss on Drying (105 C 4hr) <0. 5% Water Content (By KF) <0. 5% Infrared Complies pH 1% in water 4. 8 5. 6 (25C) Solubility 1M in water Clear and colourless solution Residue on ignition <0. 1% A260, 1M in water <0. 045 A280, 1M in water <0. 035 A420, 1M in water <0. 20 Heavy Metals <5 ppm pKa at 20C 7. 35 7. 69 Store dry at room temperature Soluble in water CAS 7365 45 9
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