Test
15625627 2.5LT Perchlorate buffer
pH 7.00
pH 10.00 (20°C)
for 500 ml buffer solution, citric acid / sodium hydroxide solution
for 500 ml buffer solution, citric acid / hydrochloric acid / sodium chloride
for 500 ml buffer solution, boric acid / sodium hydroxide solution / potassium chloride
pH 4.00±0.02
500 mL, certified buffer solution traceable to NIST/PTB reference materials, DKD certified
pH 9.00±0.02