For calibration of pH meters.

• Practical 30 ml sachets - one use per sachet - no risk of contamination
• Solutions are always fresh and ready to use
• Traceable to SRM from NIST and PTB
• Reference temperature: +25 °C
• Precision: Deviation is max. ±0,015 pH units

pH value is measured with a combined glass electrode after 5-point calibration according to DIN 19268 with reference buffer solutions according to DIN 19266, IUPAC, NIST, Ph. Eur. and USP.