Bante321 series Ion Meter, ion selective electrode (made in the United States) TP-10K temperature probe carrying case, the full series of models are as follows:
Bante321 features: 2 to 5 point key calibration, automatic temperature compensation, selectable concentration unit and stability conditions, automatic endpoint lock, automatic power off, automatic calibration reminder, automatic meter reset, 500 sets of data storage, USB communication interface

| Bante321-NH4 | Ammonium | ●Measuring range: 5×10-6~1M, accuracy: ±0.5% FS | |
| Bante321-Br | bromine | ●Measuring range: 5×10-6~1M, accuracy: ±0.5% FS | |
| Bante321-Ca | calcium | ●Measuring range: 5×10-7~1M, accuracy: ±1% FS | |
| Bante321-CL | chlorine | ●Measuring range: 5×10-6~1M, accuracy: ±0.5% FS | |
| Bante321-Cn | Cyanide | ●Measuring range: 5×10-6~0.01M, accuracy: ±1% FS | |
| Bante321-F | fluorine | ●Measurement range: 1×10-6 M~saturation, accuracy: ±0.5% FS | |
| Bante321-NO3 | Nitrate | ●Measuring range: 7×10-6~1M, accuracy: ±0.5% FS | |
| Bante321-Ag | silver | ●Measuring range: 1×10-7~1M, accuracy: ±1% FS | |
| Bante321-Na | sodium | ●Measuring range: 1×10-5~1M, accuracy: ±0.5% FS | |
| Bante321-Cd | cadmium | ●Measuring range: 1×10-6~0.1M, accuracy: ±1% FS | |
| Bante321-Cu | copper | ●Measuring range: 1×10-8~0.1M, accuracy: ±1% FS | |
| Bante321-I | iodine | ●Measuring range: 5×10-8~1M, accuracy: ±1% FS | |
| Bante321-Pb | lead | ●Measuring range: 1×10-8~0.1M, accuracy: ±1% FS | |
| Bante321-K | Potassium | ●Measuring range: 1×10-6~1M, accuracy: ±1% FS | |
| Bante321-S | sulfur | ●Measuring range: 1×10-7~1M, accuracy: ±1% FS | |
| Bante321-NH3 | ammonia | ●Measuring range: 1×10-6~1M, accuracy: ±1% FS | |