Stablcal® Turbidity Standard for all Turbidimeters. USEPA accepted for calibration purposes. Stablcal® Stabilized Formazin Turbidity Standards are true Formazin dilutions developed for use in any turbidimeter. NTU Value: 20. Bottle: 500 mL. For TL23, TU52, 2100Q, 2100N, 2100AN series
| Concentration | 20 NTU |
| Platform | Solution |
| Quantity | 500 |
| Storage Conditions | 68 °F (20 °C) |

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