HACH 2283449 Buffer Solution pH 4 red colored 500 mL larutan pH 4

pH Buffer standard solutions for laboratory and field analyses pH Buffer Standard Solution for pH electrode calibration. Color-coded pH Buffer solution for easy identification. pH is 4.01 ±0.02 at 25°C. 500 mL bottle Traceable to NIST standard reference materials Design for use with Hach meters portfolio and other meters. Reliable packaging Specifications Color coded?: Yes Description : pH Buffer Calibration reagent NIST Traceable: Yes Package Type: Bottle pH Value(s): 4.01 ±0.02 pH at 25°C Quantity: 500 mL Shelf Life: 48 months Special Remarks: Observed shelf-life after opening, following recommended storage and use: 6 months Storage Conditions: 10 - 25 °C (protect from light)