Buffer solution
(boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 10.00 (20°C) Certipur®

pH-indicator strips pH 0 – 14 Universal indicator
non-bleeding pH 0 – 1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9 – 10 – 11 – 12 – 13 – 14 MQuant®

Sodium sulfate anhydrous for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Hill Formula: Na₂O₄S EC Number: 231-820-9 Grade: ACS,ISO,Reag. Ph Eur CAS #: 7757-82-6 Chemical Formula: Na₂SO₄ Molar Mass: 142.04 g/mol