at 20°C, technically according to DIN 19267,
traceable to DAKKS certified standard reference material from PTB and NIST.
Buffer solution with the values:
pH1.00 / pH2.00 / pH3.00 / pH3.07 / pH3.56 / pH4.00
pH4.30 / pH4.65 / pH5.00 / pH6.00 / pH6.80 / pH6.88
pH7.00 / pH7.02 / pH8.00 / pH9.00 / pH9.22 / pH9.27
pH10.00 / pH10.13 / pH11.00 / pH12.00 / pH13.00
Unit sizes, prices and information on special buffer solutions not listed are available on request.