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
HI9147-04 Dissolved Oxygen / °C - Meter, Galvanic DO Probe
HI7036L - 12.41 g/L (ppt) TDS @25°C - 500ml
HI5321 Research Grade EC/TDS/Salinity/Resistivity Meter with USP
HI7033L - EC 84 µS/cm@25°C - 500ml
HI706 Checker HC ® - Phosphorous, HR
HI5521 Research Grade pH/ORP and EC/TDS/Salinity/Resistivity Meter with CAL Check™
HI708 Checker HC ® - Nitrite, HR
HI723 Checker HC ® - Chromium VI, HR
เครื่องควบคุมค่าความนำไฟฟ้า 

