HI-900601 Photometric electrode with green LED - 525 nm
HI-900601
Photometric electrodes are used with a potentiometric titration for equivalence end point detection of colorimetric reactions.
These probes are available in four different wavelengths from 470 nm to 625nm and have a universal BNC connector that is used as a potentiometric input in Hanna titrators and autosamplers.
Reflective measurement
Allows for a high colour sensitivity in a compact design
Temperature compensation
Drift from variances in temperature are automatically compensated.
Glass body
All of the photometric probes have a glass body that offers excellent chemical resistance. The body of the electrode is 12 mm in diameter and fits easily into sampling beakers.
LED Brightness Trimmer
If needed, a trimmer is provided in the head of the electrode to adjust the LED output value.
pH, ORP and ISE electrodes are commonly used in potentiometric titrations. These probes produce a voltage that changes as a titrant is dosed into the sample being analysed. The HI-90060X family of photometric probes use the principle of absorbance at a specific wavelength to identify the equivalence point of a titration with the use of a colour indicator.
The colour change in the solution causes a sharp change in the mV response. It is common for a complexometric titration to end in a flat mV response.
When using the Hanna potentiometric titrator, it is possible to program the meter to use the first derivative as the end point.
This program is ideal as when a colour indicator is used, the colour change occurs very distinctly.
With the photometric probe there is no fill solution to change in order to be compatible with a non-aqueous sample and there is no pH sensor to foul.
More about the probe
Each probe has a LED at a specific wavelength that shines light through the sample and reflected back by a platinum mirror sealed in glass.
The reflective measurement has a fixed path length and allows for a high colour sensitivity in a compact design.
All of the series has the same design but vary in the wavelength of light used for the photometric analysis.
The probe's open cell design allows the solution to pass through with the use of a stirrer.
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| mV range | 10 to 1100mV | |
| Wavelength/LED Colour | HI-900601 @ 525nm/green LED HI-900602 @625nm/red LED HI-900603 @590nm/orange LED HI-900604 @470nm/Blue LED | |
| Light source | LED | |
| Measuring Cycle | LED pulsed at 1 kHz | |
| Light detector | silicon photocell | |
| Sample temperature | 0 to 75°C | |
| Body material | Glass | |
| Body length/overall length | 120mm/200mm | |
| Outer Diameter | 12mm | |
| Connection | BNC with 1.5 meter cable for connecting to titrator or autosampler | |
| Power supply | ps/2 connector for connecting to titration system | |
| Environment | 0 to 50°C | |
| Ordering information | All probes are supplied with an instruction manual and an electrode quality testing certificate. |
