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
HI98130 COMBO Tester for pH/EC/TDS/C° up to 20 mS, waterproof
HI7031L - EC 1413 µS/cm@25°C - 500ml
HI706 Checker HC ® - Phosphorous, HR
HI716 Checker HC ® - Bromine
สารละลายมาตรฐานความขุ่น 20 NTU
HI5009 - 9.00 pH@25°C - TQ - 500ml
เครื่องวัดปริมาณแอมโมเนีย ช่วงต่ำ รุ่น HI700
เครื่องวัดปริมาณฟอสเฟต ช่วงต่ำ รุ่น HI713
HI98128 pH/°C-Tester (0.01 pH resolution) - waterproof 



