General information about our pH buffers / calibration:
Available grades:
Technical Quality
The buffer solutions of HANNA instruments include solutions from pH 1.00 to pH 13.00 and allow calibration over the entire pH scale with an accuracy of ± 0.01 pH. The buffer solution series is particularly suitable for pH measurements that require high accuracy. All solutions with certificate of analysis.
millesimal Quality
Accuracy of ± 0.002 pH for calibration of measuring instruments with 0.001 resolution. All solutions in opaque packaging with certificate of analysis.
Standard Quality
Accuracy of ± 0.01 pH in different packaging, with or without a certificate of analysis.
Available packages:
Bottle: 230ml – 500ml – 1L Can: 3.78 L (gal) Individual portions – and virtually always fresh & no contamination risk Shelf life up to 5 years
HI3844 CTK Hydrogen Peroxide
HI3812 CTK Hardness Total
HI4005-53 Carbon Dioxide membrane kit (3 caps)
เครื่องวัดปริมาณฟอสฟอรัส ช่วงสูง รุ่น HI706
HI38020 CTK Chlorine Free & Total
HI766E1 K-Type, General Purpose w Cable
HI70030C - EC 12880 µS/cm@25°C Zert. - 25x20ml
สารละลายมาตรฐานความขุ่น 20 NTU
HI38058 CTK pH
ชุดทดสอบแอมโมเนีย สำหรับน้ำจืด (HI3824)
HI766F1 K-Type, Wire Probe
เครื่องวัดปริมาณคลอรีนอิสระ รุ่น HI701
HI5001 - 1.00 pH@25°C - TQ - 500ml 



