Unbranched pullulan standard for aqueous SEC (GFC) calibration curves. High solubility in water eliminates the possibility of recrystallization. Kit contains 8 levels from approx. 5,000 Da to over 600,000 Da. Contains 0.2g each of 8 nominal MW levels. Refer to the lot test data sheet for actual values: P-5 (5,000 Da), P-10 (10,000 Da), P-20 (20,000 Da), P-50 (50,000Da), P-100 (100,000 Da), P-200 (200,000 Da), P-400 (400,000 MW), P-800 (800,000 Da).