The inoLab® pH/Cond 720 is a meter for initial processing of routine pH/conductivity measurements. The inoLab® Multi 720 allows the measurement of pH and ORP, dissolved oxygen, conductivity and salinity as well as temperature. The instruments are suitable for standard measurements where GLP-documentation is not required.
Additional features:
pH measurement | pH/Cond 720, Multi 720 |
pH | -2.00 ... +16.00 pH |
mV |
-199.9 ... +199.9 mV -1999 ... +1999 mV |
Temp. | -5,0 ... +105.0 °C |
Dissolved oxygen measurement | Multi 720 |
O2 concentration |
0.00 ... 19.99 mg/l 0.0 ... 90 mg/l* |
O2 saturation |
0.0 ... 199.9% 0 ... 600%* |
O2 partial press. |
0.0 ... 199.9 mbar 0 ... 1250 mbar |
Temp. | 0.0 ... 50.0 °C |
Conductivity measurement | pH/Cond 720, Multi 720 |
Conductivity |
0.0 µS/cm ... 500 mS/cm in 5 ranges or AutoRange, in addition at: K = 0.01 cm-1: 0.000 ... 1.999 µS/cm K = 0.1 cm-1: 0.00 ... 19.99 µS/cm |
Temperature | -5,0 ... +105,0 °C |
Salinity | 0.0 ... 70.0 |
TDS | 0 ... 1999 mg/l |
Spec. restistivity | 0.000 ... 1999 MΩcm |
* depends on DO sensor and medium |
As high-end instruments, the inoLab® pH/Cond 740 and the inoLab® Multi 740 have a resolution of 0.001 pH units. They also have all the functions necessary for making ion selective measurements. With the inoLab® Multi 740 dissolved oxygen is measured as %, mg/l or mbar. The pH/Cond 740 and the inoLab® Multi 740 can be used to measure the salinity and TDS (Total Dissolved Solids) as well as conductivity and specific resistance.
The optional built-in printer as well as the graphic display with operator guidance increase the measuring convenience and allow QA-compliant documentation.
Additional features:
pH measurement | pH/Cond 740, Multi 740 |
pH |
-2.000 ... +20.000 pH -2.00 ... +20.00 pH |
mV |
-999.9 ... +999.9 mV -2000 ... +2000 mV |
ISE Conc. | 0.01 ... 2000 mg/l |
Temp. | -5,0 ... +105.0 °C |
Dissolved oxygen measurement | Multi 740 |
O2 concentration |
0.00 ... 20.00 mg/l 0.0 ... 90 mg/l* |
O2 saturation |
0.0 ... 200.0 % 0 ... 600 %* |
O2 partial press. |
0.0 ... 200.0 mbar 0 ... 1250 mbar |
Temp. | 0.0 ... 50.0 °C) |
Conductivity measurement | pH/Cond 740, Multi 740 |
Conductivity |
0.0 µS/cm... 2000 mS/cm in 5 ranges or AutoRange, in addition at: K = 0.01 cm-1: 0.000 ... 2.000 µS/cm K = 0.1 cm-1: 0.00 ... 20.00 µS/cm |
Temperature | -5,0 ... +105,0 °C |
Salinity | 0.0 ... 70.0 |
TDS | 0 ... 1999 mg/l |
Spec. restistivity | 0.000 ... 1999 MΩcm |
* depends on DO sensor and medium |
This ultimate multi-parameter meter with its two galvanically isolated pH inputs allows independent and simultaneous measurements of pH, ORP or ion concentrations. Calibrations with up to 7 standard solutions can be performed to achieve precise measurements across the entire characteristic curve of an ISE electrode. The wide range of calibration procedures allows for even the non-linear portion of the calibration curve to be accurately defined.
In addition to direct potentiometric methods, the following advanced methods are also included:
In addition to pH and ISE capability, and with features such as the ability to measure salinity, TDS, specific conductance, resistance and temperature coefficients, this versatile meter can perform all required conductivity measurements. Temperature coefficients are pre-programmed for NaOH, HCl, KCl, and NaCl. Plus, individual (non-) linear coefficients can be entered into the instrument. Additional features include the measurement of
sample concentrations by conductivity and two dimensional temperature concentration field to determine accurate reference conductivities. Comprehensive additional functions such as measurement data management, PC-connection via MultiLab® pilot, GLP-compliant calibration and measurement data acquisition and a bidirectional RS 232 interface permit seamless integration into contemporary laboratory routines.
pH |
-2 ... 20.000 pH -2.00 ... 20.00 pH |
mV |
-999.9 ... +999.9 mV -2000 ... +2000 mV |
Concentration (mg/l) |
0.000 … 10.000 0.00 … 100.00 0.0 … 1000.0 0 … 2000 |
Temperature | -5 ... +105 °C |
Conductivity |
0.0 µS/cm ... 2000 mS/cm in 5 ranges or AutoRange, additional: 0.00 µS/cm ... 20.00 µS/cm (K=0.1 cm-1) 0.000 µS/cm ... 2.000 µS/cm (K=0.01 cm-1) |
Salinity | 0.0 ... 70.0 |
TDS | 0 ... 2000 mg/l |
Spec. resistivity | 0.00 ... 2000 MOhm |