| Model Name | Specifications | Product Description | Electrode plug |
| E-301-CF type pH triple composite electrode | 0-14pHã5-60℃ | Three-in-one conventional sample pH electrode, including waterproof insert | Waterproof BNC (Q9 type & Q6 type) |
| E-301-D type pH triple composite electrode | 0-14pHã5-60℃ | Three-in-one conventional sample pH electrode | BNC (Q9 type & Q6 type) |
| E-301F type pH triple composite electrode | 0-14pHã5-60℃ | Three-in-one conventional sample pH electrode | BNC (Q9 type & Q6 type) |
| E-301G type pH triple composite electrode | 0-14pHã5-60℃ | Three-in-one pH electrode with removable protective feet, suitable for viscous samples | BNC (Q9 type & Q6 type) |
| E-201-L type pH composite electrode | 0-14pHã5-60℃ | 2-in-1 conventional sample pH electrode, rechargeable | BNC (Q9 type) |
| E-201D type pH composite electrode | 0-14pHã5-60℃ | 2-in-1 conventional sample pH electrode, rechargeable | BNC (Q9 type) |
| E-201-CF type pH composite electrode | 0-14pHã5-60℃ | 2-in-1 conventional sample pH electrode, including waterproof insert | BNC (Q9 waterproof type) |
| E-201F type pH rechargeable composite electrode | 0-14pHã5-60℃ | Two-in-one conventional sample pH electrode | BNC (Q9 type) |
| E-201G type pH rechargeable composite electrode | 0-14pHã5-60℃ | Two-in-one pH electrode with removable protective feet, suitable for viscous samples | BNC (Q9 type) |
| E-201-C type pH composite electrode | 0-14pHã5-60℃ | Two-in-one conventional sample pH electrode | BNC (Q9 type) |
| E-201 pH composite electrode | 0-14pHã5-60℃ | Two-in-one pH electrode, in addition to common measurement samples, is also suitable for the measurement of highly contaminated samples | BNC (Q9 type) |
| E-201-Z type conical pH composite electrode | 0-14pHã5-60℃ | Cone-shaped, with stainless steel protective cover, suitable for measuring special samples such as soil pH | BNC (Q9 type) |
| E-201-P type planar pH composite electrode | 0-14pHã5-60℃ | Flat, suitable for measuring flat samples | BNC (Q9 type) |
| 65-1C type pH composite electrode (glass bulb) | 0-14pHã5-60℃ | Two-in-one pH electrode, when measuring mixed samples and highly contaminated samples, the measurement waiting time may be extended or the measurement accuracy may be reduced. | BNC (Q9 type) |
| Type 65-1 pH composite electrode (glass bulb) | 0-14pHã5-60℃ | Two-in-one pH electrode, when measuring mixed samples and highly contaminated samples, the measurement waiting time may be extended or the measurement accuracy may be reduced. | Direct plug |
| Type 231 pH glass electrode | 0-14pHã5-60℃ | Indicating electrode, equipped with type 232 reference electrode, suitable for measuring low conductivity samples under closed static conditions. | Direct plug ( Φ12 à 120 ) |
| Type 231-01 pH glass electrode | 0-14pHã5-60℃ | Indicating electrode, equipped with type 232-01 reference electrode, suitable for measuring low conductivity samples under closed static conditions. | BNC (Q9 type, Φ12Ã120) |
| E-205 Alkaline-resistant PH electrode | 0-14pH, 5-60℃ | Two-in-one alkali-resistant pH electrode | BNC (Q9 type) |