Waterproof pH, Electrical Conductivity, Total Dissolved Solids, and Temperature Metering Pen
Highly Accurate readings right out of the box! Every HI98129 is professionally calibrated to 7.01 and 10.01pH and 1382ppm.
- Super Accurate
- Large LCD Display
- Measures Temperature
- Replaceable pH Electrode
- Automatic Shut-off
- Includes Pocket Clip
Knowing the pH of your reef tank, or the electrical conductivity of your RODI water is a necessity, and Hanna's HI98129 Combo Pen is the perfect all in one solution. The lightweight and portable pen can test pH, conductivity, or TDS (total dissolved solids) in a single pocket-sized device. The HI98129 can also read the temperature and all the readings are ATC (automatic temperature compensated) which means values will be more accurate.
The pH electrode can be changed, meaning that you will not have to throw away the HI98129 after the probe has exhausted. Almost all pH sensing devices will last about a year or so until the electrode needs to be replaced, and traditionally you would need to buy a whole new metering pen, now you do not have to replace the meter! Just replace the pH cartridge that houses the electrode, and the sturdy snap-in connector will hold the electrode in place until the next time you need to replace it.
Replacement pH Electrode - HI73127
TDS Range - 0-2000ppm
TDS Resolution - 1ppm
TDS Accuracy - ±2% F.S.
EC Range - 0-3999µS/cm
EC Resolution - 1µS/cm
EC Accuracy - ±2% F.S.
pH Range - 0.0-14.0
pH Resolution - 0.01pH
pH Accuracy - ±0.05 pH
Temperature Range - 32.0°F to 140°F
Temperature Resolution - 0.1°F
Temperature Accuracy - ±1°F
Temperate Readings - °C or °F
Auto Off - 8 Minutes
Dimensions - 6.4" L x 1.6" W x 1.0" H
Warranty - 1 year
EC/TDS Calibration - Single Point (1413 µS/cm, 1382 ppm)
pH Calibration - Two Point (4.01/7.01/10.01)
TDS Conversion Factor - 0.45 to 1.00
Temperature Compensation - pH (automatic) EC/TDS (automatic with β adjustable from 0.0 to 2.4% / °C)
1x HI98129 pH/EC/TDS Metering Pen
1x HI73127 pH Electrode (pre-installed)
Awesome little gadget! By Nonemos on 11/29/2018Nonemos would recommend this product to a friendI use this to spot check water quality in my RODI container, conductivity in my FW tanks, and it also works well as a check on my tank temps. Lots of useful features and it's super easy to use.
So since this measures conductivity, does that mean with the proper equation you can calculate your salinity also with this? Would it be more accurate than a refractometer?
Unfortunately the conductivity range of this unit (0-3999µS/cm) if far below that of seawater (5 S/m) which is one million times higher than that of deionized water (~5 µS/cm).
I hope this helps!