Sitrat ve hidroklorik asit (citrate/hydrochloric acid) tampon sisteminden oluşan bu konsantre ampul, saf su ile 500 ml'ye seyreltildiğinde tam olarak 20°C sıcaklıkta pH 4.00 (±0.02) değerinde standart bir kalibrasyon çözeltisi verir.
 
NACRES: NA.25
UNSPSC Code: 12161704
Grade : analytical standard
Quality Segment : 100
Agency : according to DIN 19266
Product line : Titrisol^®
pH : 4.0 (20 °C, 50 g/L in H₂O)
bp : 110 °C
mp : -6 °C
Density : 1.06 g/cm³ at 20 °C
Application(s) : environmental, food and beverages, general analytical, industrial qc, pharmaceutical
Format : mixture
Storage temp. : 15-25°C