pH 7.00 Buffer Solution for electrode calibration and care. Color-coded for easy identification. REED R1407 Offers The pH 7.00 Buffer Solution is manufactured and ready to use in accordance with and traceable to NIST special publication 260-53 (PB 248-127) to ensure quality and accuracy. Label includes a table to display what the pH value should be given the buffer solution temperature. Features 7.0 pH Buffer Solution (25°C) 16.9 fl oz (500ml) bottle with viewing strip and childproof cap Color-coded green for easy identification ±0.020pH accuracy Certificate of Analysis available upon request Included REED R1407 Buffer Solution, 7.00 pH