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
HI3833 CTK Phosphate
HI7035L - EC 111800 µS/cm@25°C - 500ml
HI98127 pH/°C-Tester (0.1 pH resolution) - waterproof
เครื่องควบคุมค่าความนำไฟฟ้า
HI5321 Research Grade EC/TDS/Salinity/Resistivity Meter with USP
pH/EC/°C Multiparameter Probe for HI 991300 & HI 991301
HI721 Checker HC ® - Iron
PCA 310 Online Chlorine Analyzer & Controller
Calibration Standard HI 771 Checker HC ®
สารละลายมาตรฐานความขุ่น 20 NTU 


